diff --git a/baselines/audioworklet.generated.d.ts b/baselines/audioworklet.generated.d.ts
index 2ca18a7de..5edfe3994 100644
--- a/baselines/audioworklet.generated.d.ts
+++ b/baselines/audioworklet.generated.d.ts
@@ -203,6 +203,7 @@ interface AbortController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AbortController/abort)
      */
     abort(reason?: any): void;
+    readonly [Symbol.toStringTag]: "AbortController";
 }
 
 declare var AbortController: {
@@ -244,6 +245,7 @@ interface AbortSignal extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AbortSignalEventMap>(type: K, listener: (this: AbortSignal, ev: AbortSignalEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "AbortSignal";
 }
 
 declare var AbortSignal: {
@@ -293,6 +295,7 @@ interface AudioWorkletGlobalScope extends WorkletGlobalScope {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AudioWorkletGlobalScope/registerProcessor)
      */
     registerProcessor(name: string, processorCtor: AudioWorkletProcessorConstructor): void;
+    readonly [Symbol.toStringTag]: "AudioWorkletGlobalScope";
 }
 
 declare var AudioWorkletGlobalScope: {
@@ -312,6 +315,7 @@ interface AudioWorkletProcessor {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AudioWorkletProcessor/port)
      */
     readonly port: MessagePort;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AudioWorkletProcessor: {
@@ -337,6 +341,7 @@ interface ByteLengthQueuingStrategy extends QueuingStrategy<ArrayBufferView> {
     readonly highWaterMark: number;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/ByteLengthQueuingStrategy/size) */
     readonly size: QueuingStrategySize<ArrayBufferView>;
+    readonly [Symbol.toStringTag]: "ByteLengthQueuingStrategy";
 }
 
 declare var ByteLengthQueuingStrategy: {
@@ -352,6 +357,7 @@ declare var ByteLengthQueuingStrategy: {
 interface CompressionStream extends GenericTransformStream {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "CompressionStream";
 }
 
 declare var CompressionStream: {
@@ -373,6 +379,7 @@ interface CountQueuingStrategy extends QueuingStrategy {
     readonly highWaterMark: number;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/CountQueuingStrategy/size) */
     readonly size: QueuingStrategySize;
+    readonly [Symbol.toStringTag]: "CountQueuingStrategy";
 }
 
 declare var CountQueuingStrategy: {
@@ -399,6 +406,7 @@ interface CustomEvent<T = any> extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CustomEvent/initCustomEvent)
      */
     initCustomEvent(type: string, bubbles?: boolean, cancelable?: boolean, detail?: T): void;
+    readonly [Symbol.toStringTag]: "CustomEvent";
 }
 
 declare var CustomEvent: {
@@ -456,6 +464,7 @@ interface DOMException extends Error {
     readonly TIMEOUT_ERR: 23;
     readonly INVALID_NODE_TYPE_ERR: 24;
     readonly DATA_CLONE_ERR: 25;
+    readonly [Symbol.toStringTag]: "DOMException";
 }
 
 declare var DOMException: {
@@ -496,6 +505,7 @@ declare var DOMException: {
 interface DecompressionStream extends GenericTransformStream {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "DecompressionStream";
 }
 
 declare var DecompressionStream: {
@@ -539,6 +549,7 @@ interface ErrorEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ErrorEvent/message)
      */
     readonly message: string;
+    readonly [Symbol.toStringTag]: "ErrorEvent";
 }
 
 declare var ErrorEvent: {
@@ -668,6 +679,7 @@ interface Event {
     readonly CAPTURING_PHASE: 1;
     readonly AT_TARGET: 2;
     readonly BUBBLING_PHASE: 3;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Event: {
@@ -711,6 +723,7 @@ interface EventTarget {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/EventTarget/removeEventListener)
      */
     removeEventListener(type: string, callback: EventListenerOrEventListenerObject | null, options?: EventListenerOptions | boolean): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var EventTarget: {
@@ -763,6 +776,7 @@ interface MessageEvent<T = any> extends Event {
     readonly source: MessageEventSource | null;
     /** @deprecated */
     initMessageEvent(type: string, bubbles?: boolean, cancelable?: boolean, data?: any, origin?: string, lastEventId?: string, source?: MessageEventSource | null, ports?: MessagePort[]): void;
+    readonly [Symbol.toStringTag]: "MessageEvent";
 }
 
 declare var MessageEvent: {
@@ -820,6 +834,7 @@ interface MessagePort extends EventTarget, MessageEventTarget<MessagePort> {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MessagePortEventMap>(type: K, listener: (this: MessagePort, ev: MessagePortEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MessagePort";
 }
 
 declare var MessagePort: {
@@ -845,6 +860,7 @@ interface PromiseRejectionEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PromiseRejectionEvent/reason)
      */
     readonly reason: any;
+    readonly [Symbol.toStringTag]: "PromiseRejectionEvent";
 }
 
 declare var PromiseRejectionEvent: {
@@ -888,6 +904,7 @@ interface ReadableByteStreamController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableByteStreamController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "ReadableByteStreamController";
 }
 
 declare var ReadableByteStreamController: {
@@ -939,6 +956,7 @@ interface ReadableStream<R = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStream/tee)
      */
     tee(): [ReadableStream<R>, ReadableStream<R>];
+    readonly [Symbol.toStringTag]: "ReadableStream";
 }
 
 declare var ReadableStream: {
@@ -966,6 +984,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/releaseLock)
      */
     releaseLock(): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamBYOBReader";
 }
 
 declare var ReadableStreamBYOBReader: {
@@ -997,6 +1016,7 @@ interface ReadableStreamBYOBRequest {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBRequest/respondWithNewView)
      */
     respondWithNewView(view: ArrayBufferView<ArrayBuffer>): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamBYOBRequest";
 }
 
 declare var ReadableStreamBYOBRequest: {
@@ -1034,6 +1054,7 @@ interface ReadableStreamDefaultController<R = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamDefaultController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamDefaultController";
 }
 
 declare var ReadableStreamDefaultController: {
@@ -1059,6 +1080,7 @@ interface ReadableStreamDefaultReader<R = any> extends ReadableStreamGenericRead
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamDefaultReader/releaseLock)
      */
     releaseLock(): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamDefaultReader";
 }
 
 declare var ReadableStreamDefaultReader: {
@@ -1085,6 +1107,7 @@ interface TextDecoder extends TextDecoderCommon {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextDecoder/decode)
      */
     decode(input?: AllowSharedBufferSource, options?: TextDecodeOptions): string;
+    readonly [Symbol.toStringTag]: "TextDecoder";
 }
 
 declare var TextDecoder: {
@@ -1121,6 +1144,7 @@ interface TextDecoderCommon {
 interface TextDecoderStream extends GenericTransformStream, TextDecoderCommon {
     readonly readable: ReadableStream<string>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "TextDecoderStream";
 }
 
 declare var TextDecoderStream: {
@@ -1146,6 +1170,7 @@ interface TextEncoder extends TextEncoderCommon {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextEncoder/encodeInto)
      */
     encodeInto(source: string, destination: Uint8Array<ArrayBufferLike>): TextEncoderEncodeIntoResult;
+    readonly [Symbol.toStringTag]: "TextEncoder";
 }
 
 declare var TextEncoder: {
@@ -1170,6 +1195,7 @@ interface TextEncoderCommon {
 interface TextEncoderStream extends GenericTransformStream, TextEncoderCommon {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<string>;
+    readonly [Symbol.toStringTag]: "TextEncoderStream";
 }
 
 declare var TextEncoderStream: {
@@ -1195,6 +1221,7 @@ interface TransformStream<I = any, O = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TransformStream/writable)
      */
     readonly writable: WritableStream<I>;
+    readonly [Symbol.toStringTag]: "TransformStream";
 }
 
 declare var TransformStream: {
@@ -1232,6 +1259,7 @@ interface TransformStreamDefaultController<O = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TransformStreamDefaultController/terminate)
      */
     terminate(): void;
+    readonly [Symbol.toStringTag]: "TransformStreamDefaultController";
 }
 
 declare var TransformStreamDefaultController: {
@@ -1324,6 +1352,7 @@ interface URL {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/URL/toJSON)
      */
     toJSON(): string;
+    readonly [Symbol.toStringTag]: "URL";
 }
 
 declare var URL: {
@@ -1399,6 +1428,7 @@ interface URLSearchParams {
     sort(): void;
     toString(): string;
     forEach(callbackfn: (value: string, key: string, parent: URLSearchParams) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "URLSearchParams";
 }
 
 declare var URLSearchParams: {
@@ -1413,6 +1443,7 @@ declare var URLSearchParams: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WorkletGlobalScope)
  */
 interface WorkletGlobalScope {
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var WorkletGlobalScope: {
@@ -1450,6 +1481,7 @@ interface WritableStream<W = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStream/getWriter)
      */
     getWriter(): WritableStreamDefaultWriter<W>;
+    readonly [Symbol.toStringTag]: "WritableStream";
 }
 
 declare var WritableStream: {
@@ -1475,6 +1507,7 @@ interface WritableStreamDefaultController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStreamDefaultController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "WritableStreamDefaultController";
 }
 
 declare var WritableStreamDefaultController: {
@@ -1530,6 +1563,7 @@ interface WritableStreamDefaultWriter<W = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStreamDefaultWriter/write)
      */
     write(chunk?: W): Promise<void>;
+    readonly [Symbol.toStringTag]: "WritableStreamDefaultWriter";
 }
 
 declare var WritableStreamDefaultWriter: {
@@ -1539,6 +1573,7 @@ declare var WritableStreamDefaultWriter: {
 
 declare namespace WebAssembly {
     interface CompileError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.CompileError";
     }
 
     var CompileError: {
@@ -1571,6 +1606,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Exception/is)
          */
         is(exceptionTag: Tag): boolean;
+        readonly [Symbol.toStringTag]: "WebAssembly.Exception";
     }
 
     var Exception: {
@@ -1586,6 +1622,7 @@ declare namespace WebAssembly {
     interface Global<T extends ValueType = ValueType> {
         value: ValueTypeMap[T];
         valueOf(): ValueTypeMap[T];
+        readonly [Symbol.toStringTag]: "WebAssembly.Global";
     }
 
     var Global: {
@@ -1605,6 +1642,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Instance/exports)
          */
         readonly exports: Exports;
+        readonly [Symbol.toStringTag]: "WebAssembly.Instance";
     }
 
     var Instance: {
@@ -1613,6 +1651,7 @@ declare namespace WebAssembly {
     };
 
     interface LinkError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.LinkError";
     }
 
     var LinkError: {
@@ -1639,6 +1678,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Memory/grow)
          */
         grow(delta: AddressValue): AddressValue;
+        readonly [Symbol.toStringTag]: "WebAssembly.Memory";
     }
 
     var Memory: {
@@ -1652,6 +1692,7 @@ declare namespace WebAssembly {
      * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Module)
      */
     interface Module {
+        readonly [Symbol.toStringTag]: "WebAssembly.Module";
     }
 
     var Module: {
@@ -1678,6 +1719,7 @@ declare namespace WebAssembly {
     };
 
     interface RuntimeError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.RuntimeError";
     }
 
     var RuntimeError: {
@@ -1716,6 +1758,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Table/set)
          */
         set(index: AddressValue, value?: any): void;
+        readonly [Symbol.toStringTag]: "WebAssembly.Table";
     }
 
     var Table: {
@@ -1729,6 +1772,7 @@ declare namespace WebAssembly {
      * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Tag)
      */
     interface Tag {
+        readonly [Symbol.toStringTag]: "WebAssembly.Tag";
     }
 
     var Tag: {
@@ -2037,6 +2081,7 @@ interface MessageEvent<T = any> {
 
 interface URLSearchParamsIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): URLSearchParamsIterator<T>;
+    readonly [Symbol.toStringTag]: "URLSearchParams Iterator";
 }
 
 interface URLSearchParams {
@@ -2056,6 +2101,7 @@ interface URLSearchParams {
 
 interface ReadableStreamAsyncIterator<T> extends AsyncIteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.asyncIterator](): ReadableStreamAsyncIterator<T>;
+    readonly [Symbol.toStringTag]: "ReadableStream AsyncIterator";
 }
 
 interface ReadableStream<R = any> {
diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index 1362648bc..25f888e84 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -2831,6 +2831,7 @@ interface AbortController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AbortController/abort)
      */
     abort(reason?: any): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AbortController: {
@@ -2872,6 +2873,7 @@ interface AbortSignal extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AbortSignalEventMap>(type: K, listener: (this: AbortSignal, ev: AbortSignalEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AbortSignal: {
@@ -2933,6 +2935,7 @@ interface AbstractRange {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AbstractRange/startOffset)
      */
     readonly startOffset: number;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AbstractRange: {
@@ -3013,6 +3016,7 @@ interface AnalyserNode extends AudioNode {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AnalyserNode/getFloatTimeDomainData)
      */
     getFloatTimeDomainData(array: Float32Array<ArrayBuffer>): void;
+    readonly [Symbol.toStringTag]: "AnalyserNode";
 }
 
 declare var AnalyserNode: {
@@ -3169,6 +3173,7 @@ interface Animation extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AnimationEventMap>(type: K, listener: (this: Animation, ev: AnimationEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Animation: {
@@ -3200,6 +3205,7 @@ interface AnimationEffect {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AnimationEffect/updateTiming)
      */
     updateTiming(timing?: OptionalEffectTiming): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AnimationEffect: {
@@ -3231,6 +3237,7 @@ interface AnimationEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AnimationEvent/pseudoElement)
      */
     readonly pseudoElement: string;
+    readonly [Symbol.toStringTag]: "AnimationEvent";
 }
 
 declare var AnimationEvent: {
@@ -3263,6 +3270,7 @@ interface AnimationPlaybackEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AnimationPlaybackEvent/timelineTime)
      */
     readonly timelineTime: CSSNumberish | null;
+    readonly [Symbol.toStringTag]: "AnimationPlaybackEvent";
 }
 
 declare var AnimationPlaybackEvent: {
@@ -3288,6 +3296,7 @@ interface AnimationTimeline {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AnimationTimeline/duration)
      */
     readonly duration: CSSNumberish | null;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AnimationTimeline: {
@@ -3348,6 +3357,7 @@ interface Attr extends Node {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Node/textContent) */
     get textContent(): string;
     set textContent(value: string | null);
+    readonly [Symbol.toStringTag]: "Attr";
 }
 
 declare var Attr: {
@@ -3403,6 +3413,7 @@ interface AudioBuffer {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AudioBuffer/getChannelData)
      */
     getChannelData(channel: number): Float32Array<ArrayBuffer>;
+    readonly [Symbol.toStringTag]: "AudioBuffer";
 }
 
 declare var AudioBuffer: {
@@ -3462,6 +3473,7 @@ interface AudioBufferSourceNode extends AudioScheduledSourceNode {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AudioScheduledSourceNodeEventMap>(type: K, listener: (this: AudioBufferSourceNode, ev: AudioScheduledSourceNodeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "AudioBufferSourceNode";
 }
 
 declare var AudioBufferSourceNode: {
@@ -3533,6 +3545,7 @@ interface AudioContext extends BaseAudioContext {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof BaseAudioContextEventMap>(type: K, listener: (this: AudioContext, ev: BaseAudioContextEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "AudioContext";
 }
 
 declare var AudioContext: {
@@ -3606,6 +3619,7 @@ interface AudioData {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AudioData/copyTo)
      */
     copyTo(destination: AllowSharedBufferSource, options: AudioDataCopyToOptions): void;
+    readonly [Symbol.toStringTag]: "AudioData";
 }
 
 declare var AudioData: {
@@ -3672,6 +3686,7 @@ interface AudioDecoder extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AudioDecoderEventMap>(type: K, listener: (this: AudioDecoder, ev: AudioDecoderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "AudioDecoder";
 }
 
 declare var AudioDecoder: {
@@ -3697,6 +3712,7 @@ interface AudioDestinationNode extends AudioNode {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AudioDestinationNode/maxChannelCount)
      */
     readonly maxChannelCount: number;
+    readonly [Symbol.toStringTag]: "AudioDestinationNode";
 }
 
 declare var AudioDestinationNode: {
@@ -3763,6 +3779,7 @@ interface AudioEncoder extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AudioEncoderEventMap>(type: K, listener: (this: AudioEncoder, ev: AudioEncoderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "AudioEncoder";
 }
 
 declare var AudioEncoder: {
@@ -3850,6 +3867,7 @@ interface AudioListener {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AudioListener/setPosition)
      */
     setPosition(x: number, y: number, z: number): void;
+    readonly [Symbol.toStringTag]: "AudioListener";
 }
 
 declare var AudioListener: {
@@ -3918,6 +3936,7 @@ interface AudioNode extends EventTarget {
     disconnect(destinationNode: AudioNode, output: number, input: number): void;
     disconnect(destinationParam: AudioParam): void;
     disconnect(destinationParam: AudioParam, output: number): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AudioNode: {
@@ -3998,6 +4017,7 @@ interface AudioParam {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AudioParam/setValueCurveAtTime)
      */
     setValueCurveAtTime(values: number[] | Float32Array, startTime: number, duration: number): AudioParam;
+    readonly [Symbol.toStringTag]: "AudioParam";
 }
 
 declare var AudioParam: {
@@ -4012,6 +4032,7 @@ declare var AudioParam: {
  */
 interface AudioParamMap {
     forEach(callbackfn: (value: AudioParam, key: string, parent: AudioParamMap) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "AudioParamMap";
 }
 
 declare var AudioParamMap: {
@@ -4047,6 +4068,7 @@ interface AudioProcessingEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AudioProcessingEvent/playbackTime)
      */
     readonly playbackTime: number;
+    readonly [Symbol.toStringTag]: "AudioProcessingEvent";
 }
 
 /** @deprecated */
@@ -4083,6 +4105,7 @@ interface AudioScheduledSourceNode extends AudioNode {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AudioScheduledSourceNodeEventMap>(type: K, listener: (this: AudioScheduledSourceNode, ev: AudioScheduledSourceNodeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AudioScheduledSourceNode: {
@@ -4097,6 +4120,7 @@ declare var AudioScheduledSourceNode: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AudioWorklet)
  */
 interface AudioWorklet extends Worklet {
+    readonly [Symbol.toStringTag]: "AudioWorklet";
 }
 
 declare var AudioWorklet: {
@@ -4133,6 +4157,7 @@ interface AudioWorkletNode extends AudioNode {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AudioWorkletNodeEventMap>(type: K, listener: (this: AudioWorkletNode, ev: AudioWorkletNodeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "AudioWorkletNode";
 }
 
 declare var AudioWorkletNode: {
@@ -4165,6 +4190,7 @@ interface AuthenticatorAssertionResponse extends AuthenticatorResponse {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AuthenticatorAssertionResponse/userHandle)
      */
     readonly userHandle: ArrayBuffer | null;
+    readonly [Symbol.toStringTag]: "AuthenticatorAssertionResponse";
 }
 
 declare var AuthenticatorAssertionResponse: {
@@ -4209,6 +4235,7 @@ interface AuthenticatorAttestationResponse extends AuthenticatorResponse {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AuthenticatorAttestationResponse/getTransports)
      */
     getTransports(): string[];
+    readonly [Symbol.toStringTag]: "AuthenticatorAttestationResponse";
 }
 
 declare var AuthenticatorAttestationResponse: {
@@ -4229,6 +4256,7 @@ interface AuthenticatorResponse {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AuthenticatorResponse/clientDataJSON)
      */
     readonly clientDataJSON: ArrayBuffer;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AuthenticatorResponse: {
@@ -4248,6 +4276,7 @@ interface BarProp {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/BarProp/visible)
      */
     readonly visible: boolean;
+    readonly [Symbol.toStringTag]: "BarProp";
 }
 
 declare var BarProp: {
@@ -4423,6 +4452,7 @@ interface BaseAudioContext extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof BaseAudioContextEventMap>(type: K, listener: (this: BaseAudioContext, ev: BaseAudioContextEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var BaseAudioContext: {
@@ -4443,6 +4473,7 @@ interface BeforeUnloadEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/BeforeUnloadEvent/returnValue)
      */
     returnValue: any;
+    readonly [Symbol.toStringTag]: "BeforeUnloadEvent";
 }
 
 declare var BeforeUnloadEvent: {
@@ -4492,6 +4523,7 @@ interface BiquadFilterNode extends AudioNode {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/BiquadFilterNode/getFrequencyResponse)
      */
     getFrequencyResponse(frequencyHz: Float32Array<ArrayBuffer>, magResponse: Float32Array<ArrayBuffer>, phaseResponse: Float32Array<ArrayBuffer>): void;
+    readonly [Symbol.toStringTag]: "BiquadFilterNode";
 }
 
 declare var BiquadFilterNode: {
@@ -4547,6 +4579,7 @@ interface Blob {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Blob/text)
      */
     text(): Promise<string>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Blob: {
@@ -4572,6 +4605,7 @@ interface BlobEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/BlobEvent/timecode)
      */
     readonly timecode: DOMHighResTimeStamp;
+    readonly [Symbol.toStringTag]: "BlobEvent";
 }
 
 declare var BlobEvent: {
@@ -4635,6 +4669,7 @@ interface BroadcastChannel extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof BroadcastChannelEventMap>(type: K, listener: (this: BroadcastChannel, ev: BroadcastChannelEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "BroadcastChannel";
 }
 
 declare var BroadcastChannel: {
@@ -4656,6 +4691,7 @@ interface ByteLengthQueuingStrategy extends QueuingStrategy<ArrayBufferView> {
     readonly highWaterMark: number;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/ByteLengthQueuingStrategy/size) */
     readonly size: QueuingStrategySize<ArrayBufferView>;
+    readonly [Symbol.toStringTag]: "ByteLengthQueuingStrategy";
 }
 
 declare var ByteLengthQueuingStrategy: {
@@ -4669,6 +4705,7 @@ declare var ByteLengthQueuingStrategy: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CDATASection)
  */
 interface CDATASection extends Text {
+    readonly [Symbol.toStringTag]: "CDATASection";
 }
 
 declare var CDATASection: {
@@ -4692,6 +4729,7 @@ interface CSSAnimation extends Animation {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AnimationEventMap>(type: K, listener: (this: CSSAnimation, ev: AnimationEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "CSSAnimation";
 }
 
 declare var CSSAnimation: {
@@ -4711,6 +4749,7 @@ interface CSSConditionRule extends CSSGroupingRule {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSConditionRule/conditionText)
      */
     readonly conditionText: string;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSConditionRule: {
@@ -4736,6 +4775,7 @@ interface CSSContainerRule extends CSSConditionRule {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSContainerRule/containerQuery)
      */
     readonly containerQuery: string;
+    readonly [Symbol.toStringTag]: "CSSContainerRule";
 }
 
 declare var CSSContainerRule: {
@@ -4815,6 +4855,7 @@ interface CSSCounterStyleRule extends CSSRule {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSCounterStyleRule/system)
      */
     system: string;
+    readonly [Symbol.toStringTag]: "CSSCounterStyleRule";
 }
 
 declare var CSSCounterStyleRule: {
@@ -4835,6 +4876,7 @@ interface CSSFontFaceRule extends CSSRule {
      */
     get style(): CSSStyleDeclaration;
     set style(cssText: string);
+    readonly [Symbol.toStringTag]: "CSSFontFaceRule";
 }
 
 declare var CSSFontFaceRule: {
@@ -4854,6 +4896,7 @@ interface CSSFontFeatureValuesRule extends CSSRule {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSFontFeatureValuesRule/fontFamily)
      */
     fontFamily: string;
+    readonly [Symbol.toStringTag]: "CSSFontFeatureValuesRule";
 }
 
 declare var CSSFontFeatureValuesRule: {
@@ -4891,6 +4934,7 @@ interface CSSFontPaletteValuesRule extends CSSRule {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSFontPaletteValuesRule/overrideColors)
      */
     readonly overrideColors: string;
+    readonly [Symbol.toStringTag]: "CSSFontPaletteValuesRule";
 }
 
 declare var CSSFontPaletteValuesRule: {
@@ -4922,6 +4966,7 @@ interface CSSGroupingRule extends CSSRule {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSGroupingRule/insertRule)
      */
     insertRule(rule: string, index?: number): number;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSGroupingRule: {
@@ -4935,6 +4980,7 @@ declare var CSSGroupingRule: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSImageValue)
  */
 interface CSSImageValue extends CSSStyleValue {
+    readonly [Symbol.toStringTag]: "CSSImageValue";
 }
 
 declare var CSSImageValue: {
@@ -4979,6 +5025,7 @@ interface CSSImportRule extends CSSRule {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSImportRule/supportsText)
      */
     readonly supportsText: string | null;
+    readonly [Symbol.toStringTag]: "CSSImportRule";
 }
 
 declare var CSSImportRule: {
@@ -5005,6 +5052,7 @@ interface CSSKeyframeRule extends CSSRule {
      */
     get style(): CSSStyleDeclaration;
     set style(cssText: string);
+    readonly [Symbol.toStringTag]: "CSSKeyframeRule";
 }
 
 declare var CSSKeyframeRule: {
@@ -5055,6 +5103,7 @@ interface CSSKeyframesRule extends CSSRule {
      */
     findRule(select: string): CSSKeyframeRule | null;
     [index: number]: CSSKeyframeRule;
+    readonly [Symbol.toStringTag]: "CSSKeyframesRule";
 }
 
 declare var CSSKeyframesRule: {
@@ -5074,6 +5123,7 @@ interface CSSKeywordValue extends CSSStyleValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSKeywordValue/value)
      */
     value: string;
+    readonly [Symbol.toStringTag]: "CSSKeywordValue";
 }
 
 declare var CSSKeywordValue: {
@@ -5093,6 +5143,7 @@ interface CSSLayerBlockRule extends CSSGroupingRule {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSLayerBlockRule/name)
      */
     readonly name: string;
+    readonly [Symbol.toStringTag]: "CSSLayerBlockRule";
 }
 
 declare var CSSLayerBlockRule: {
@@ -5112,6 +5163,7 @@ interface CSSLayerStatementRule extends CSSRule {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSLayerStatementRule/nameList)
      */
     readonly nameList: ReadonlyArray<string>;
+    readonly [Symbol.toStringTag]: "CSSLayerStatementRule";
 }
 
 declare var CSSLayerStatementRule: {
@@ -5123,6 +5175,7 @@ interface CSSMathClamp extends CSSMathValue {
     readonly lower: CSSNumericValue;
     readonly upper: CSSNumericValue;
     readonly value: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSMathClamp";
 }
 
 declare var CSSMathClamp: {
@@ -5142,6 +5195,7 @@ interface CSSMathInvert extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathInvert/value)
      */
     readonly value: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSMathInvert";
 }
 
 declare var CSSMathInvert: {
@@ -5161,6 +5215,7 @@ interface CSSMathMax extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathMax/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathMax";
 }
 
 declare var CSSMathMax: {
@@ -5180,6 +5235,7 @@ interface CSSMathMin extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathMin/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathMin";
 }
 
 declare var CSSMathMin: {
@@ -5199,6 +5255,7 @@ interface CSSMathNegate extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathNegate/value)
      */
     readonly value: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSMathNegate";
 }
 
 declare var CSSMathNegate: {
@@ -5218,6 +5275,7 @@ interface CSSMathProduct extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathProduct/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathProduct";
 }
 
 declare var CSSMathProduct: {
@@ -5237,6 +5295,7 @@ interface CSSMathSum extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathSum/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathSum";
 }
 
 declare var CSSMathSum: {
@@ -5256,6 +5315,7 @@ interface CSSMathValue extends CSSNumericValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathValue/operator)
      */
     readonly operator: CSSMathOperator;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSMathValue: {
@@ -5275,6 +5335,7 @@ interface CSSMatrixComponent extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMatrixComponent/matrix)
      */
     matrix: DOMMatrix;
+    readonly [Symbol.toStringTag]: "CSSMatrixComponent";
 }
 
 declare var CSSMatrixComponent: {
@@ -5295,6 +5356,7 @@ interface CSSMediaRule extends CSSConditionRule {
      */
     get media(): MediaList;
     set media(mediaText: string);
+    readonly [Symbol.toStringTag]: "CSSMediaRule";
 }
 
 declare var CSSMediaRule: {
@@ -5320,6 +5382,7 @@ interface CSSNamespaceRule extends CSSRule {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSNamespaceRule/prefix)
      */
     readonly prefix: string;
+    readonly [Symbol.toStringTag]: "CSSNamespaceRule";
 }
 
 declare var CSSNamespaceRule: {
@@ -5340,6 +5403,7 @@ interface CSSNestedDeclarations extends CSSRule {
      */
     get style(): CSSStyleDeclaration;
     set style(cssText: string);
+    readonly [Symbol.toStringTag]: "CSSNestedDeclarations";
 }
 
 declare var CSSNestedDeclarations: {
@@ -5361,6 +5425,7 @@ interface CSSNumericArray {
     readonly length: number;
     forEach(callbackfn: (value: CSSNumericValue, key: number, parent: CSSNumericArray) => void, thisArg?: any): void;
     [index: number]: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSNumericArray";
 }
 
 declare var CSSNumericArray: {
@@ -5434,6 +5499,7 @@ interface CSSNumericValue extends CSSStyleValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSNumericValue/type)
      */
     type(): CSSNumericType;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSNumericValue: {
@@ -5473,6 +5539,7 @@ interface CSSPageDescriptors extends CSSStyleDeclarationBase {
     marginTop: string;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSPageDescriptors#size) */
     size: string;
+    readonly [Symbol.toStringTag]: "CSSPageDescriptors";
 }
 
 declare var CSSPageDescriptors: {
@@ -5499,6 +5566,7 @@ interface CSSPageRule extends CSSGroupingRule {
      */
     get style(): CSSPageDescriptors;
     set style(cssText: string);
+    readonly [Symbol.toStringTag]: "CSSPageRule";
 }
 
 declare var CSSPageRule: {
@@ -5518,6 +5586,7 @@ interface CSSPerspective extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSPerspective/length)
      */
     length: CSSPerspectiveValue;
+    readonly [Symbol.toStringTag]: "CSSPerspective";
 }
 
 declare var CSSPerspective: {
@@ -5671,6 +5740,7 @@ interface CSSPositionTryDescriptors extends CSSStyleDeclarationBase {
     top: string;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSPositionTryDescriptors#instance_properties) */
     width: string;
+    readonly [Symbol.toStringTag]: "CSSPositionTryDescriptors";
 }
 
 declare var CSSPositionTryDescriptors: {
@@ -5697,6 +5767,7 @@ interface CSSPositionTryRule extends CSSRule {
      */
     get style(): CSSPositionTryDescriptors;
     set style(cssText: string);
+    readonly [Symbol.toStringTag]: "CSSPositionTryRule";
 }
 
 declare var CSSPositionTryRule: {
@@ -5734,6 +5805,7 @@ interface CSSPropertyRule extends CSSRule {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSPropertyRule/syntax)
      */
     readonly syntax: string;
+    readonly [Symbol.toStringTag]: "CSSPropertyRule";
 }
 
 declare var CSSPropertyRule: {
@@ -5771,6 +5843,7 @@ interface CSSRotate extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSRotate/z)
      */
     z: CSSNumberish;
+    readonly [Symbol.toStringTag]: "CSSRotate";
 }
 
 declare var CSSRotate: {
@@ -5822,6 +5895,7 @@ interface CSSRule {
     readonly SUPPORTS_RULE: 12;
     readonly COUNTER_STYLE_RULE: 11;
     readonly FONT_FEATURE_VALUES_RULE: 14;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSRule: {
@@ -5860,6 +5934,7 @@ interface CSSRuleList {
      */
     item(index: number): CSSRule | null;
     [index: number]: CSSRule;
+    readonly [Symbol.toStringTag]: "CSSRuleList";
 }
 
 declare var CSSRuleList: {
@@ -5891,6 +5966,7 @@ interface CSSScale extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSScale/z)
      */
     z: CSSNumberish;
+    readonly [Symbol.toStringTag]: "CSSScale";
 }
 
 declare var CSSScale: {
@@ -5916,6 +5992,7 @@ interface CSSScopeRule extends CSSGroupingRule {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSScopeRule/start)
      */
     readonly start: string | null;
+    readonly [Symbol.toStringTag]: "CSSScopeRule";
 }
 
 declare var CSSScopeRule: {
@@ -5941,6 +6018,7 @@ interface CSSSkew extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSSkew/ay)
      */
     ay: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSSkew";
 }
 
 declare var CSSSkew: {
@@ -5960,6 +6038,7 @@ interface CSSSkewX extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSSkewX/ax)
      */
     ax: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSSkewX";
 }
 
 declare var CSSSkewX: {
@@ -5979,6 +6058,7 @@ interface CSSSkewY extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSSkewY/ay)
      */
     ay: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSSkewY";
 }
 
 declare var CSSSkewY: {
@@ -5992,6 +6072,7 @@ declare var CSSSkewY: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSStartingStyleRule)
  */
 interface CSSStartingStyleRule extends CSSGroupingRule {
+    readonly [Symbol.toStringTag]: "CSSStartingStyleRule";
 }
 
 declare var CSSStartingStyleRule: {
@@ -6054,6 +6135,7 @@ interface CSSStyleDeclarationBase {
      */
     setProperty(property: string, value: string | null, priority?: string): void;
     [index: number]: string;
+    readonly [Symbol.toStringTag]: string;
 }
 
 interface CSSStyleDeclaration extends CSSStyleProperties {
@@ -7415,6 +7497,7 @@ interface CSSStyleProperties extends CSSStyleDeclarationBase {
     zIndex: string;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/CSS/zoom) */
     zoom: string;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSStyleProperties: {
@@ -7447,6 +7530,7 @@ interface CSSStyleRule extends CSSGroupingRule {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSStyleRule/styleMap)
      */
     readonly styleMap: StylePropertyMap;
+    readonly [Symbol.toStringTag]: "CSSStyleRule";
 }
 
 declare var CSSStyleRule: {
@@ -7517,6 +7601,7 @@ interface CSSStyleSheet extends StyleSheet {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSStyleSheet/replaceSync)
      */
     replaceSync(text: string): void;
+    readonly [Symbol.toStringTag]: "CSSStyleSheet";
 }
 
 declare var CSSStyleSheet: {
@@ -7531,6 +7616,7 @@ declare var CSSStyleSheet: {
  */
 interface CSSStyleValue {
     toString(): string;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSStyleValue: {
@@ -7556,6 +7642,7 @@ declare var CSSStyleValue: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSSupportsRule)
  */
 interface CSSSupportsRule extends CSSConditionRule {
+    readonly [Symbol.toStringTag]: "CSSSupportsRule";
 }
 
 declare var CSSSupportsRule: {
@@ -7582,6 +7669,7 @@ interface CSSTransformComponent {
      */
     toMatrix(): DOMMatrix;
     toString(): string;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSTransformComponent: {
@@ -7615,6 +7703,7 @@ interface CSSTransformValue extends CSSStyleValue {
     toMatrix(): DOMMatrix;
     forEach(callbackfn: (value: CSSTransformComponent, key: number, parent: CSSTransformValue) => void, thisArg?: any): void;
     [index: number]: CSSTransformComponent;
+    readonly [Symbol.toStringTag]: "CSSTransformValue";
 }
 
 declare var CSSTransformValue: {
@@ -7638,6 +7727,7 @@ interface CSSTransition extends Animation {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AnimationEventMap>(type: K, listener: (this: CSSTransition, ev: AnimationEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "CSSTransition";
 }
 
 declare var CSSTransition: {
@@ -7669,6 +7759,7 @@ interface CSSTranslate extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSTranslate/z)
      */
     z: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSTranslate";
 }
 
 declare var CSSTranslate: {
@@ -7694,6 +7785,7 @@ interface CSSUnitValue extends CSSNumericValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSUnitValue/value)
      */
     value: number;
+    readonly [Symbol.toStringTag]: "CSSUnitValue";
 }
 
 declare var CSSUnitValue: {
@@ -7715,6 +7807,7 @@ interface CSSUnparsedValue extends CSSStyleValue {
     readonly length: number;
     forEach(callbackfn: (value: CSSUnparsedSegment, key: number, parent: CSSUnparsedValue) => void, thisArg?: any): void;
     [index: number]: CSSUnparsedSegment;
+    readonly [Symbol.toStringTag]: "CSSUnparsedValue";
 }
 
 declare var CSSUnparsedValue: {
@@ -7740,6 +7833,7 @@ interface CSSVariableReferenceValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSVariableReferenceValue/variable)
      */
     variable: string;
+    readonly [Symbol.toStringTag]: "CSSVariableReferenceValue";
 }
 
 declare var CSSVariableReferenceValue: {
@@ -7750,6 +7844,7 @@ declare var CSSVariableReferenceValue: {
 interface CSSViewTransitionRule extends CSSRule {
     readonly navigation: string;
     readonly types: ReadonlyArray<string>;
+    readonly [Symbol.toStringTag]: "CSSViewTransitionRule";
 }
 
 declare var CSSViewTransitionRule: {
@@ -7806,6 +7901,7 @@ interface Cache {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Cache/put)
      */
     put(request: RequestInfo | URL, response: Response): Promise<void>;
+    readonly [Symbol.toStringTag]: "Cache";
 }
 
 declare var Cache: {
@@ -7850,6 +7946,7 @@ interface CacheStorage {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CacheStorage/open)
      */
     open(cacheName: string): Promise<Cache>;
+    readonly [Symbol.toStringTag]: "CacheStorage";
 }
 
 declare var CacheStorage: {
@@ -7879,6 +7976,7 @@ interface CanvasCaptureMediaStreamTrack extends MediaStreamTrack {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MediaStreamTrackEventMap>(type: K, listener: (this: CanvasCaptureMediaStreamTrack, ev: MediaStreamTrackEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "CanvasCaptureMediaStreamTrack";
 }
 
 declare var CanvasCaptureMediaStreamTrack: {
@@ -7952,6 +8050,7 @@ interface CanvasGradient {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CanvasGradient/addColorStop)
      */
     addColorStop(offset: number, color: string): void;
+    readonly [Symbol.toStringTag]: "CanvasGradient";
 }
 
 declare var CanvasGradient: {
@@ -8029,6 +8128,7 @@ interface CanvasPattern {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CanvasPattern/setTransform)
      */
     setTransform(transform?: DOMMatrix2DInit): void;
+    readonly [Symbol.toStringTag]: "CanvasPattern";
 }
 
 declare var CanvasPattern: {
@@ -8057,6 +8157,7 @@ interface CanvasRenderingContext2D extends CanvasCompositing, CanvasDrawImage, C
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/canvas)
      */
     readonly canvas: HTMLCanvasElement;
+    readonly [Symbol.toStringTag]: "CanvasRenderingContext2D";
 }
 
 declare var CanvasRenderingContext2D: {
@@ -8171,6 +8272,7 @@ interface CaretPosition {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CaretPosition/getClientRect)
      */
     getClientRect(): DOMRect | null;
+    readonly [Symbol.toStringTag]: "CaretPosition";
 }
 
 declare var CaretPosition: {
@@ -8184,6 +8286,7 @@ declare var CaretPosition: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ChannelMergerNode)
  */
 interface ChannelMergerNode extends AudioNode {
+    readonly [Symbol.toStringTag]: "ChannelMergerNode";
 }
 
 declare var ChannelMergerNode: {
@@ -8197,6 +8300,7 @@ declare var ChannelMergerNode: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ChannelSplitterNode)
  */
 interface ChannelSplitterNode extends AudioNode {
+    readonly [Symbol.toStringTag]: "ChannelSplitterNode";
 }
 
 declare var ChannelSplitterNode: {
@@ -8256,6 +8360,7 @@ interface CharacterData extends Node, ChildNode, NonDocumentTypeChildNode {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Node/textContent) */
     get textContent(): string;
     set textContent(value: string | null);
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CharacterData: {
@@ -8331,6 +8436,7 @@ interface Clipboard extends EventTarget {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Clipboard/writeText)
      */
     writeText(data: string): Promise<void>;
+    readonly [Symbol.toStringTag]: "Clipboard";
 }
 
 declare var Clipboard: {
@@ -8350,6 +8456,7 @@ interface ClipboardEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ClipboardEvent/clipboardData)
      */
     readonly clipboardData: DataTransfer | null;
+    readonly [Symbol.toStringTag]: "ClipboardEvent";
 }
 
 declare var ClipboardEvent: {
@@ -8382,6 +8489,7 @@ interface ClipboardItem {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ClipboardItem/getType)
      */
     getType(type: string): Promise<Blob>;
+    readonly [Symbol.toStringTag]: "ClipboardItem";
 }
 
 declare var ClipboardItem: {
@@ -8419,6 +8527,7 @@ interface CloseEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CloseEvent/wasClean)
      */
     readonly wasClean: boolean;
+    readonly [Symbol.toStringTag]: "CloseEvent";
 }
 
 declare var CloseEvent: {
@@ -8444,6 +8553,7 @@ interface CommandEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CommandEvent/source)
      */
     readonly source: Element | null;
+    readonly [Symbol.toStringTag]: "CommandEvent";
 }
 
 declare var CommandEvent: {
@@ -8457,6 +8567,7 @@ declare var CommandEvent: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Comment)
  */
 interface Comment extends CharacterData {
+    readonly [Symbol.toStringTag]: "Comment";
 }
 
 declare var Comment: {
@@ -8483,6 +8594,7 @@ interface CompositionEvent extends UIEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CompositionEvent/initCompositionEvent)
      */
     initCompositionEvent(typeArg: string, bubblesArg?: boolean, cancelableArg?: boolean, viewArg?: WindowProxy | null, dataArg?: string): void;
+    readonly [Symbol.toStringTag]: "CompositionEvent";
 }
 
 declare var CompositionEvent: {
@@ -8498,6 +8610,7 @@ declare var CompositionEvent: {
 interface CompressionStream extends GenericTransformStream {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "CompressionStream";
 }
 
 declare var CompressionStream: {
@@ -8521,6 +8634,7 @@ interface ConstantSourceNode extends AudioScheduledSourceNode {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AudioScheduledSourceNodeEventMap>(type: K, listener: (this: ConstantSourceNode, ev: AudioScheduledSourceNodeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ConstantSourceNode";
 }
 
 declare var ConstantSourceNode: {
@@ -8540,6 +8654,7 @@ interface ContentVisibilityAutoStateChangeEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ContentVisibilityAutoStateChangeEvent/skipped)
      */
     readonly skipped: boolean;
+    readonly [Symbol.toStringTag]: "ContentVisibilityAutoStateChangeEvent";
 }
 
 declare var ContentVisibilityAutoStateChangeEvent: {
@@ -8565,6 +8680,7 @@ interface ConvolverNode extends AudioNode {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ConvolverNode/normalize)
      */
     normalize: boolean;
+    readonly [Symbol.toStringTag]: "ConvolverNode";
 }
 
 declare var ConvolverNode: {
@@ -8591,6 +8707,7 @@ interface CookieChangeEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CookieChangeEvent/deleted)
      */
     readonly deleted: ReadonlyArray<CookieListItem>;
+    readonly [Symbol.toStringTag]: "CookieChangeEvent";
 }
 
 declare var CookieChangeEvent: {
@@ -8643,6 +8760,7 @@ interface CookieStore extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof CookieStoreEventMap>(type: K, listener: (this: CookieStore, ev: CookieStoreEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "CookieStore";
 }
 
 declare var CookieStore: {
@@ -8675,6 +8793,7 @@ interface CookieStoreManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CookieStoreManager/unsubscribe)
      */
     unsubscribe(subscriptions: CookieStoreGetOptions[]): Promise<void>;
+    readonly [Symbol.toStringTag]: "CookieStoreManager";
 }
 
 declare var CookieStoreManager: {
@@ -8696,6 +8815,7 @@ interface CountQueuingStrategy extends QueuingStrategy {
     readonly highWaterMark: number;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/CountQueuingStrategy/size) */
     readonly size: QueuingStrategySize;
+    readonly [Symbol.toStringTag]: "CountQueuingStrategy";
 }
 
 declare var CountQueuingStrategy: {
@@ -8722,6 +8842,7 @@ interface Credential {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Credential/type)
      */
     readonly type: string;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Credential: {
@@ -8760,6 +8881,7 @@ interface CredentialsContainer {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CredentialsContainer/store)
      */
     store(credential: Credential): Promise<void>;
+    readonly [Symbol.toStringTag]: "CredentialsContainer";
 }
 
 declare var CredentialsContainer: {
@@ -8793,6 +8915,7 @@ interface Crypto {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/randomUUID)
      */
     randomUUID(): `${string}-${string}-${string}-${string}-${string}`;
+    readonly [Symbol.toStringTag]: "Crypto";
 }
 
 declare var Crypto: {
@@ -8831,6 +8954,7 @@ interface CryptoKey {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CryptoKey/usages)
      */
     readonly usages: KeyUsage[];
+    readonly [Symbol.toStringTag]: "CryptoKey";
 }
 
 declare var CryptoKey: {
@@ -8874,6 +8998,7 @@ interface CustomElementRegistry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CustomElementRegistry/whenDefined)
      */
     whenDefined(name: string): Promise<CustomElementConstructor>;
+    readonly [Symbol.toStringTag]: "CustomElementRegistry";
 }
 
 declare var CustomElementRegistry: {
@@ -8900,6 +9025,7 @@ interface CustomEvent<T = any> extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CustomEvent/initCustomEvent)
      */
     initCustomEvent(type: string, bubbles?: boolean, cancelable?: boolean, detail?: T): void;
+    readonly [Symbol.toStringTag]: "CustomEvent";
 }
 
 declare var CustomEvent: {
@@ -8914,6 +9040,7 @@ declare var CustomEvent: {
  */
 interface CustomStateSet {
     forEach(callbackfn: (value: string, key: string, parent: CustomStateSet) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "CustomStateSet";
 }
 
 declare var CustomStateSet: {
@@ -8971,6 +9098,7 @@ interface DOMException extends Error {
     readonly TIMEOUT_ERR: 23;
     readonly INVALID_NODE_TYPE_ERR: 24;
     readonly DATA_CLONE_ERR: 25;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMException: {
@@ -9034,6 +9162,7 @@ interface DOMImplementation {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMImplementation/hasFeature)
      */
     hasFeature(...args: any[]): true;
+    readonly [Symbol.toStringTag]: "DOMImplementation";
 }
 
 declare var DOMImplementation: {
@@ -9163,6 +9292,7 @@ interface DOMMatrix extends DOMMatrixReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMMatrix/translateSelf)
      */
     translateSelf(tx?: number, ty?: number, tz?: number): DOMMatrix;
+    readonly [Symbol.toStringTag]: "DOMMatrix";
 }
 
 declare var DOMMatrix: {
@@ -9340,6 +9470,7 @@ interface DOMMatrixReadOnly {
      */
     translate(tx?: number, ty?: number, tz?: number): DOMMatrix;
     toString(): string;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMMatrixReadOnly: {
@@ -9362,6 +9493,7 @@ interface DOMParser {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMParser/parseFromString)
      */
     parseFromString(string: string, type: DOMParserSupportedType): Document;
+    readonly [Symbol.toStringTag]: "DOMParser";
 }
 
 declare var DOMParser: {
@@ -9399,6 +9531,7 @@ interface DOMPoint extends DOMPointReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMPoint/z)
      */
     z: number;
+    readonly [Symbol.toStringTag]: "DOMPoint";
 }
 
 declare var DOMPoint: {
@@ -9457,6 +9590,7 @@ interface DOMPointReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMPointReadOnly/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMPointReadOnly: {
@@ -9512,6 +9646,7 @@ interface DOMQuad {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMQuad/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "DOMQuad";
 }
 
 declare var DOMQuad: {
@@ -9551,6 +9686,7 @@ interface DOMRect extends DOMRectReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMRect/y)
      */
     y: number;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMRect: {
@@ -9586,6 +9722,7 @@ interface DOMRectList {
      */
     item(index: number): DOMRect | null;
     [index: number]: DOMRect;
+    readonly [Symbol.toStringTag]: "DOMRectList";
 }
 
 declare var DOMRectList: {
@@ -9653,6 +9790,7 @@ interface DOMRectReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMRectReadOnly/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMRectReadOnly: {
@@ -9691,6 +9829,7 @@ interface DOMStringList {
      */
     item(index: number): string | null;
     [index: number]: string;
+    readonly [Symbol.toStringTag]: "DOMStringList";
 }
 
 declare var DOMStringList: {
@@ -9705,6 +9844,7 @@ declare var DOMStringList: {
  */
 interface DOMStringMap {
     [name: string]: string | undefined;
+    readonly [Symbol.toStringTag]: "DOMStringMap";
 }
 
 declare var DOMStringMap: {
@@ -9775,6 +9915,7 @@ interface DOMTokenList {
     toggle(token: string, force?: boolean): boolean;
     forEach(callbackfn: (value: string, key: number, parent: DOMTokenList) => void, thisArg?: any): void;
     [index: number]: string;
+    readonly [Symbol.toStringTag]: "DOMTokenList";
 }
 
 declare var DOMTokenList: {
@@ -9842,6 +9983,7 @@ interface DataTransfer {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DataTransfer/setDragImage)
      */
     setDragImage(image: Element, x: number, y: number): void;
+    readonly [Symbol.toStringTag]: "DataTransfer";
 }
 
 declare var DataTransfer: {
@@ -9885,6 +10027,7 @@ interface DataTransferItem {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DataTransferItem/webkitGetAsEntry)
      */
     webkitGetAsEntry(): FileSystemEntry | null;
+    readonly [Symbol.toStringTag]: "DataTransferItem";
 }
 
 declare var DataTransferItem: {
@@ -9924,6 +10067,7 @@ interface DataTransferItemList {
      */
     remove(index: number): void;
     [index: number]: DataTransferItem;
+    readonly [Symbol.toStringTag]: "DataTransferItemList";
 }
 
 declare var DataTransferItemList: {
@@ -9939,6 +10083,7 @@ declare var DataTransferItemList: {
 interface DecompressionStream extends GenericTransformStream {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "DecompressionStream";
 }
 
 declare var DecompressionStream: {
@@ -9958,6 +10103,7 @@ interface DelayNode extends AudioNode {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DelayNode/delayTime)
      */
     readonly delayTime: AudioParam;
+    readonly [Symbol.toStringTag]: "DelayNode";
 }
 
 declare var DelayNode: {
@@ -9996,6 +10142,7 @@ interface DeviceMotionEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DeviceMotionEvent/rotationRate)
      */
     readonly rotationRate: DeviceMotionEventRotationRate | null;
+    readonly [Symbol.toStringTag]: "DeviceMotionEvent";
 }
 
 declare var DeviceMotionEvent: {
@@ -10088,6 +10235,7 @@ interface DeviceOrientationEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DeviceOrientationEvent/gamma)
      */
     readonly gamma: number | null;
+    readonly [Symbol.toStringTag]: "DeviceOrientationEvent";
 }
 
 declare var DeviceOrientationEvent: {
@@ -10100,6 +10248,7 @@ interface DigitalCredential extends Credential {
     readonly data: any;
     readonly protocol: string;
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "DigitalCredential";
 }
 
 declare var DigitalCredential: {
@@ -10759,6 +10908,7 @@ interface Document extends Node, DocumentOrShadowRoot, FontFaceSource, GlobalEve
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof DocumentEventMap>(type: K, listener: (this: Document, ev: DocumentEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Document: {
@@ -10783,6 +10933,7 @@ interface DocumentFragment extends Node, NonElementParentNode, ParentNode {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Node/textContent) */
     get textContent(): string;
     set textContent(value: string | null);
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DocumentFragment: {
@@ -10827,6 +10978,7 @@ interface DocumentOrShadowRoot {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DocumentTimeline)
  */
 interface DocumentTimeline extends AnimationTimeline {
+    readonly [Symbol.toStringTag]: "DocumentTimeline";
 }
 
 declare var DocumentTimeline: {
@@ -10861,6 +11013,7 @@ interface DocumentType extends Node, ChildNode {
     readonly systemId: string;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/Node/textContent) */
     get textContent(): null;
+    readonly [Symbol.toStringTag]: "DocumentType";
 }
 
 declare var DocumentType: {
@@ -10880,6 +11033,7 @@ interface DragEvent extends MouseEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DragEvent/dataTransfer)
      */
     readonly dataTransfer: DataTransfer | null;
+    readonly [Symbol.toStringTag]: "DragEvent";
 }
 
 declare var DragEvent: {
@@ -10929,6 +11083,7 @@ interface DynamicsCompressorNode extends AudioNode {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DynamicsCompressorNode/threshold)
      */
     readonly threshold: AudioParam;
+    readonly [Symbol.toStringTag]: "DynamicsCompressorNode";
 }
 
 declare var DynamicsCompressorNode: {
@@ -11472,6 +11627,7 @@ interface Element extends Node, ARIAMixin, Animatable, ChildNode, NonDocumentTyp
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ElementEventMap>(type: K, listener: (this: Element, ev: ElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Element: {
@@ -11570,6 +11726,7 @@ interface ElementInternals extends ARIAMixin {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ElementInternals/setValidity)
      */
     setValidity(flags?: ValidityStateFlags, message?: string, anchor?: HTMLElement): void;
+    readonly [Symbol.toStringTag]: "ElementInternals";
 }
 
 declare var ElementInternals: {
@@ -11613,6 +11770,7 @@ interface EncodedAudioChunk {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/EncodedAudioChunk/copyTo)
      */
     copyTo(destination: AllowSharedBufferSource): void;
+    readonly [Symbol.toStringTag]: "EncodedAudioChunk";
 }
 
 declare var EncodedAudioChunk: {
@@ -11656,6 +11814,7 @@ interface EncodedVideoChunk {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/EncodedVideoChunk/copyTo)
      */
     copyTo(destination: AllowSharedBufferSource): void;
+    readonly [Symbol.toStringTag]: "EncodedVideoChunk";
 }
 
 declare var EncodedVideoChunk: {
@@ -11699,6 +11858,7 @@ interface ErrorEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ErrorEvent/message)
      */
     readonly message: string;
+    readonly [Symbol.toStringTag]: "ErrorEvent";
 }
 
 declare var ErrorEvent: {
@@ -11828,6 +11988,7 @@ interface Event {
     readonly CAPTURING_PHASE: 1;
     readonly AT_TARGET: 2;
     readonly BUBBLING_PHASE: 3;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Event: {
@@ -11846,6 +12007,7 @@ declare var Event: {
  */
 interface EventCounts {
     forEach(callbackfn: (value: number, key: string, parent: EventCounts) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "EventCounts";
 }
 
 declare var EventCounts: {
@@ -11912,6 +12074,7 @@ interface EventSource extends EventTarget {
     removeEventListener<K extends keyof EventSourceEventMap>(type: K, listener: (this: EventSource, ev: EventSourceEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: (this: EventSource, event: MessageEvent) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "EventSource";
 }
 
 declare var EventSource: {
@@ -11946,6 +12109,7 @@ interface EventTarget {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/EventTarget/removeEventListener)
      */
     removeEventListener(type: string, callback: EventListenerOrEventListenerObject | null, options?: EventListenerOptions | boolean): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var EventTarget: {
@@ -11959,6 +12123,7 @@ interface External {
     AddSearchProvider(): void;
     /** @deprecated */
     IsSearchProviderInstalled(): void;
+    readonly [Symbol.toStringTag]: "External";
 }
 
 /** @deprecated */
@@ -11991,6 +12156,7 @@ interface File extends Blob {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/File/webkitRelativePath)
      */
     readonly webkitRelativePath: string;
+    readonly [Symbol.toStringTag]: "File";
 }
 
 declare var File: {
@@ -12017,6 +12183,7 @@ interface FileList {
      */
     item(index: number): File | null;
     [index: number]: File;
+    readonly [Symbol.toStringTag]: "FileList";
 }
 
 declare var FileList: {
@@ -12107,6 +12274,7 @@ interface FileReader extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof FileReaderEventMap>(type: K, listener: (this: FileReader, ev: FileReaderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "FileReader";
 }
 
 declare var FileReader: {
@@ -12135,6 +12303,7 @@ interface FileSystem {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystem/root)
      */
     readonly root: FileSystemDirectoryEntry;
+    readonly [Symbol.toStringTag]: "FileSystem";
 }
 
 declare var FileSystem: {
@@ -12166,6 +12335,7 @@ interface FileSystemDirectoryEntry extends FileSystemEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemDirectoryEntry/getFile)
      */
     getFile(path?: string | null, options?: FileSystemFlags, successCallback?: FileSystemEntryCallback, errorCallback?: ErrorCallback): void;
+    readonly [Symbol.toStringTag]: "FileSystemDirectoryEntry";
 }
 
 declare var FileSystemDirectoryEntry: {
@@ -12205,6 +12375,7 @@ interface FileSystemDirectoryHandle extends FileSystemHandle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemDirectoryHandle/resolve)
      */
     resolve(possibleDescendant: FileSystemHandle): Promise<string[] | null>;
+    readonly [Symbol.toStringTag]: "FileSystemDirectoryHandle";
 }
 
 declare var FileSystemDirectoryHandle: {
@@ -12224,6 +12395,7 @@ interface FileSystemDirectoryReader {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemDirectoryReader/readEntries)
      */
     readEntries(successCallback: FileSystemEntriesCallback, errorCallback?: ErrorCallback): void;
+    readonly [Symbol.toStringTag]: "FileSystemDirectoryReader";
 }
 
 declare var FileSystemDirectoryReader: {
@@ -12273,6 +12445,7 @@ interface FileSystemEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemEntry/getParent)
      */
     getParent(successCallback?: FileSystemEntryCallback, errorCallback?: ErrorCallback): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var FileSystemEntry: {
@@ -12292,6 +12465,7 @@ interface FileSystemFileEntry extends FileSystemEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemFileEntry/file)
      */
     file(successCallback: FileCallback, errorCallback?: ErrorCallback): void;
+    readonly [Symbol.toStringTag]: "FileSystemFileEntry";
 }
 
 declare var FileSystemFileEntry: {
@@ -12319,6 +12493,7 @@ interface FileSystemFileHandle extends FileSystemHandle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemFileHandle/getFile)
      */
     getFile(): Promise<File>;
+    readonly [Symbol.toStringTag]: "FileSystemFileHandle";
 }
 
 declare var FileSystemFileHandle: {
@@ -12351,6 +12526,7 @@ interface FileSystemHandle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemHandle/isSameEntry)
      */
     isSameEntry(other: FileSystemHandle): Promise<boolean>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var FileSystemHandle: {
@@ -12383,6 +12559,7 @@ interface FileSystemWritableFileStream extends WritableStream {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemWritableFileStream/write)
      */
     write(data: FileSystemWriteChunkType): Promise<void>;
+    readonly [Symbol.toStringTag]: "FileSystemWritableFileStream";
 }
 
 declare var FileSystemWritableFileStream: {
@@ -12402,6 +12579,7 @@ interface FocusEvent extends UIEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FocusEvent/relatedTarget)
      */
     readonly relatedTarget: EventTarget | null;
+    readonly [Symbol.toStringTag]: "FocusEvent";
 }
 
 declare var FocusEvent: {
@@ -12499,6 +12677,7 @@ interface FontFace {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FontFace/load)
      */
     load(): Promise<FontFace>;
+    readonly [Symbol.toStringTag]: "FontFace";
 }
 
 declare var FontFace: {
@@ -12553,6 +12732,7 @@ interface FontFaceSet extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof FontFaceSetEventMap>(type: K, listener: (this: FontFaceSet, ev: FontFaceSetEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "FontFaceSet";
 }
 
 declare var FontFaceSet: {
@@ -12572,6 +12752,7 @@ interface FontFaceSetLoadEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FontFaceSetLoadEvent/fontfaces)
      */
     readonly fontfaces: ReadonlyArray<FontFace>;
+    readonly [Symbol.toStringTag]: "FontFaceSetLoadEvent";
 }
 
 declare var FontFaceSetLoadEvent: {
@@ -12631,6 +12812,7 @@ interface FormData {
     set(name: string, value: string): void;
     set(name: string, blobValue: Blob, filename?: string): void;
     forEach(callbackfn: (value: FormDataEntryValue, key: string, parent: FormData) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "FormData";
 }
 
 declare var FormData: {
@@ -12650,6 +12832,7 @@ interface FormDataEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FormDataEvent/formData)
      */
     readonly formData: FormData;
+    readonly [Symbol.toStringTag]: "FormDataEvent";
 }
 
 declare var FormDataEvent: {
@@ -12663,6 +12846,7 @@ declare var FormDataEvent: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FragmentDirective)
  */
 interface FragmentDirective {
+    readonly [Symbol.toStringTag]: "FragmentDirective";
 }
 
 declare var FragmentDirective: {
@@ -12683,6 +12867,7 @@ interface GPUError {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/GPUError/message)
      */
     readonly message: string;
+    readonly [Symbol.toStringTag]: "GPUError";
 }
 
 declare var GPUError: {
@@ -12703,6 +12888,7 @@ interface GPUPipelineError extends DOMException {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/GPUPipelineError/reason)
      */
     readonly reason: GPUPipelineErrorReason;
+    readonly [Symbol.toStringTag]: "GPUPipelineError";
 }
 
 declare var GPUPipelineError: {
@@ -12722,6 +12908,7 @@ interface GainNode extends AudioNode {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/GainNode/gain)
      */
     readonly gain: AudioParam;
+    readonly [Symbol.toStringTag]: "GainNode";
 }
 
 declare var GainNode: {
@@ -12783,6 +12970,7 @@ interface Gamepad {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Gamepad/vibrationActuator)
      */
     readonly vibrationActuator: GamepadHapticActuator;
+    readonly [Symbol.toStringTag]: "Gamepad";
 }
 
 declare var Gamepad: {
@@ -12814,6 +13002,7 @@ interface GamepadButton {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/GamepadButton/value)
      */
     readonly value: number;
+    readonly [Symbol.toStringTag]: "GamepadButton";
 }
 
 declare var GamepadButton: {
@@ -12833,6 +13022,7 @@ interface GamepadEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/GamepadEvent/gamepad)
      */
     readonly gamepad: Gamepad;
+    readonly [Symbol.toStringTag]: "GamepadEvent";
 }
 
 declare var GamepadEvent: {
@@ -12858,6 +13048,7 @@ interface GamepadHapticActuator {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/GamepadHapticActuator/reset)
      */
     reset(): Promise<GamepadHapticsResult>;
+    readonly [Symbol.toStringTag]: "GamepadHapticActuator";
 }
 
 declare var GamepadHapticActuator: {
@@ -12896,6 +13087,7 @@ interface Geolocation {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Geolocation/watchPosition)
      */
     watchPosition(successCallback: PositionCallback, errorCallback?: PositionErrorCallback | null, options?: PositionOptions): number;
+    readonly [Symbol.toStringTag]: "Geolocation";
 }
 
 declare var Geolocation: {
@@ -12958,6 +13150,7 @@ interface GeolocationCoordinates {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/GeolocationCoordinates/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "GeolocationCoordinates";
 }
 
 declare var GeolocationCoordinates: {
@@ -12990,6 +13183,7 @@ interface GeolocationPosition {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/GeolocationPosition/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "GeolocationPosition";
 }
 
 declare var GeolocationPosition: {
@@ -13018,6 +13212,7 @@ interface GeolocationPositionError {
     readonly PERMISSION_DENIED: 1;
     readonly POSITION_UNAVAILABLE: 2;
     readonly TIMEOUT: 3;
+    readonly [Symbol.toStringTag]: "GeolocationPositionError";
 }
 
 declare var GeolocationPositionError: {
@@ -13395,6 +13590,7 @@ interface HTMLAllCollection {
      */
     namedItem(name: string): HTMLCollection | Element | null;
     [index: number]: Element;
+    readonly [Symbol.toStringTag]: "HTMLAllCollection";
 }
 
 declare var HTMLAllCollection: {
@@ -13477,6 +13673,7 @@ interface HTMLAnchorElement extends HTMLElement, HTMLHyperlinkElementUtils {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLAnchorElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLAnchorElement";
 }
 
 declare var HTMLAnchorElement: {
@@ -13551,6 +13748,7 @@ interface HTMLAreaElement extends HTMLElement, HTMLHyperlinkElementUtils {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLAreaElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLAreaElement";
 }
 
 declare var HTMLAreaElement: {
@@ -13568,6 +13766,7 @@ interface HTMLAudioElement extends HTMLMediaElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLMediaElementEventMap>(type: K, listener: (this: HTMLAudioElement, ev: HTMLMediaElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLAudioElement";
 }
 
 declare var HTMLAudioElement: {
@@ -13587,6 +13786,7 @@ interface HTMLBRElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLBRElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLBRElement";
 }
 
 declare var HTMLBRElement: {
@@ -13616,6 +13816,7 @@ interface HTMLBaseElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLBaseElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLBaseElement";
 }
 
 declare var HTMLBaseElement: {
@@ -13648,6 +13849,7 @@ interface HTMLBodyElement extends HTMLElement, WindowEventHandlers {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLBodyElementEventMap>(type: K, listener: (this: HTMLBodyElement, ev: HTMLBodyElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLBodyElement";
 }
 
 declare var HTMLBodyElement: {
@@ -13779,6 +13981,7 @@ interface HTMLButtonElement extends HTMLElement, PopoverTargetAttributes {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLButtonElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLButtonElement";
 }
 
 declare var HTMLButtonElement: {
@@ -13842,6 +14045,7 @@ interface HTMLCanvasElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLCanvasElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLCanvasElement";
 }
 
 declare var HTMLCanvasElement: {
@@ -13868,6 +14072,7 @@ interface HTMLCollectionBase {
      */
     item(index: number): Element | null;
     [index: number]: Element;
+    readonly [Symbol.toStringTag]: string;
 }
 
 interface HTMLCollection extends HTMLCollectionBase {
@@ -13907,6 +14112,7 @@ interface HTMLDListElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLDListElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLDListElement";
 }
 
 declare var HTMLDListElement: {
@@ -13930,6 +14136,7 @@ interface HTMLDataElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLDataElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLDataElement";
 }
 
 declare var HTMLDataElement: {
@@ -13953,6 +14160,7 @@ interface HTMLDataListElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLDataListElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLDataListElement";
 }
 
 declare var HTMLDataListElement: {
@@ -13982,6 +14190,7 @@ interface HTMLDetailsElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLDetailsElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLDetailsElement";
 }
 
 declare var HTMLDetailsElement: {
@@ -14041,6 +14250,7 @@ interface HTMLDialogElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLDialogElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLDialogElement";
 }
 
 declare var HTMLDialogElement: {
@@ -14056,6 +14266,7 @@ interface HTMLDirectoryElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLDirectoryElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLDirectoryElement";
 }
 
 /** @deprecated */
@@ -14076,6 +14287,7 @@ interface HTMLDivElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLDivElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLDivElement";
 }
 
 declare var HTMLDivElement: {
@@ -14088,6 +14300,7 @@ interface HTMLDocument extends Document {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof DocumentEventMap>(type: K, listener: (this: HTMLDocument, ev: DocumentEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLDocument";
 }
 
 declare var HTMLDocument: {
@@ -14264,6 +14477,7 @@ interface HTMLElement extends Element, ElementCSSInlineStyle, ElementContentEdit
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var HTMLElement: {
@@ -14315,6 +14529,7 @@ interface HTMLEmbedElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLEmbedElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLEmbedElement";
 }
 
 declare var HTMLEmbedElement: {
@@ -14398,6 +14613,7 @@ interface HTMLFieldSetElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLFieldSetElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLFieldSetElement";
 }
 
 declare var HTMLFieldSetElement: {
@@ -14437,6 +14653,7 @@ interface HTMLFontElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLFontElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLFontElement";
 }
 
 /** @deprecated */
@@ -14457,6 +14674,7 @@ interface HTMLFormControlsCollection extends HTMLCollectionBase {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLFormControlsCollection/namedItem)
      */
     namedItem(name: string): RadioNodeList | Element | null;
+    readonly [Symbol.toStringTag]: "HTMLFormControlsCollection";
 }
 
 declare var HTMLFormControlsCollection: {
@@ -14585,6 +14803,7 @@ interface HTMLFormElement extends HTMLElement {
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
     [index: number]: Element;
     [name: string]: any;
+    readonly [Symbol.toStringTag]: "HTMLFormElement";
 }
 
 declare var HTMLFormElement: {
@@ -14618,6 +14837,7 @@ interface HTMLFrameElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLFrameElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLFrameElement";
 }
 
 /** @deprecated */
@@ -14644,6 +14864,7 @@ interface HTMLFrameSetElement extends HTMLElement, WindowEventHandlers {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLFrameSetElementEventMap>(type: K, listener: (this: HTMLFrameSetElement, ev: HTMLFrameSetElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLFrameSetElement";
 }
 
 /** @deprecated */
@@ -14672,6 +14893,7 @@ interface HTMLHRElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLHRElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLHRElement";
 }
 
 declare var HTMLHRElement: {
@@ -14689,6 +14911,7 @@ interface HTMLHeadElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLHeadElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLHeadElement";
 }
 
 declare var HTMLHeadElement: {
@@ -14708,6 +14931,7 @@ interface HTMLHeadingElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLHeadingElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLHeadingElement";
 }
 
 declare var HTMLHeadingElement: {
@@ -14732,6 +14956,7 @@ interface HTMLHtmlElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLHtmlElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLHtmlElement";
 }
 
 declare var HTMLHtmlElement: {
@@ -14930,6 +15155,7 @@ interface HTMLIFrameElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLIFrameElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLIFrameElement";
 }
 
 declare var HTMLIFrameElement: {
@@ -15111,6 +15337,7 @@ interface HTMLImageElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLImageElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLImageElement";
 }
 
 declare var HTMLImageElement: {
@@ -15463,6 +15690,7 @@ interface HTMLInputElement extends HTMLElement, PopoverTargetAttributes {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLInputElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLInputElement";
 }
 
 declare var HTMLInputElement: {
@@ -15488,6 +15716,7 @@ interface HTMLLIElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLLIElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLLIElement";
 }
 
 declare var HTMLLIElement: {
@@ -15523,6 +15752,7 @@ interface HTMLLabelElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLLabelElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLLabelElement";
 }
 
 declare var HTMLLabelElement: {
@@ -15548,6 +15778,7 @@ interface HTMLLegendElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLLegendElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLLegendElement";
 }
 
 declare var HTMLLegendElement: {
@@ -15670,6 +15901,7 @@ interface HTMLLinkElement extends HTMLElement, LinkStyle {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLLinkElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLLinkElement";
 }
 
 declare var HTMLLinkElement: {
@@ -15699,6 +15931,7 @@ interface HTMLMapElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLMapElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLMapElement";
 }
 
 declare var HTMLMapElement: {
@@ -15743,6 +15976,7 @@ interface HTMLMarqueeElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLMarqueeElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLMarqueeElement";
 }
 
 /** @deprecated */
@@ -16011,6 +16245,7 @@ interface HTMLMediaElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLMediaElementEventMap>(type: K, listener: (this: HTMLMediaElement, ev: HTMLMediaElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var HTMLMediaElement: {
@@ -16044,6 +16279,7 @@ interface HTMLMenuElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLMenuElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLMenuElement";
 }
 
 declare var HTMLMenuElement: {
@@ -16092,6 +16328,7 @@ interface HTMLMetaElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLMetaElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLMetaElement";
 }
 
 declare var HTMLMetaElement: {
@@ -16151,6 +16388,7 @@ interface HTMLMeterElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLMeterElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLMeterElement";
 }
 
 declare var HTMLMeterElement: {
@@ -16180,6 +16418,7 @@ interface HTMLModElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLModElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLModElement";
 }
 
 declare var HTMLModElement: {
@@ -16222,6 +16461,7 @@ interface HTMLOListElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLOListElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLOListElement";
 }
 
 declare var HTMLOListElement: {
@@ -16356,6 +16596,7 @@ interface HTMLObjectElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLObjectElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLObjectElement";
 }
 
 declare var HTMLObjectElement: {
@@ -16385,6 +16626,7 @@ interface HTMLOptGroupElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLOptGroupElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLOptGroupElement";
 }
 
 declare var HTMLOptGroupElement: {
@@ -16450,6 +16692,7 @@ interface HTMLOptionElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLOptionElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLOptionElement";
 }
 
 declare var HTMLOptionElement: {
@@ -16487,6 +16730,7 @@ interface HTMLOptionsCollection extends HTMLCollectionOf<HTMLOptionElement> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLOptionsCollection/remove)
      */
     remove(index: number): void;
+    readonly [Symbol.toStringTag]: "HTMLOptionsCollection";
 }
 
 declare var HTMLOptionsCollection: {
@@ -16598,6 +16842,7 @@ interface HTMLOutputElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLOutputElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLOutputElement";
 }
 
 declare var HTMLOutputElement: {
@@ -16617,6 +16862,7 @@ interface HTMLParagraphElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLParagraphElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLParagraphElement";
 }
 
 declare var HTMLParagraphElement: {
@@ -16643,6 +16889,7 @@ interface HTMLParamElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLParamElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLParamElement";
 }
 
 /** @deprecated */
@@ -16661,6 +16908,7 @@ interface HTMLPictureElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLPictureElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLPictureElement";
 }
 
 declare var HTMLPictureElement: {
@@ -16680,6 +16928,7 @@ interface HTMLPreElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLPreElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLPreElement";
 }
 
 declare var HTMLPreElement: {
@@ -16721,6 +16970,7 @@ interface HTMLProgressElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLProgressElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLProgressElement";
 }
 
 declare var HTMLProgressElement: {
@@ -16744,6 +16994,7 @@ interface HTMLQuoteElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLQuoteElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLQuoteElement";
 }
 
 declare var HTMLQuoteElement: {
@@ -16834,6 +17085,7 @@ interface HTMLScriptElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLScriptElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLScriptElement";
 }
 
 declare var HTMLScriptElement: {
@@ -17009,6 +17261,7 @@ interface HTMLSelectElement extends HTMLElement {
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLSelectElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
     [name: number]: HTMLOptionElement | HTMLOptGroupElement;
+    readonly [Symbol.toStringTag]: "HTMLSelectElement";
 }
 
 declare var HTMLSelectElement: {
@@ -17050,6 +17303,7 @@ interface HTMLSlotElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLSlotElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLSlotElement";
 }
 
 declare var HTMLSlotElement: {
@@ -17109,6 +17363,7 @@ interface HTMLSourceElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLSourceElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLSourceElement";
 }
 
 declare var HTMLSourceElement: {
@@ -17126,6 +17381,7 @@ interface HTMLSpanElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLSpanElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLSpanElement";
 }
 
 declare var HTMLSpanElement: {
@@ -17169,6 +17425,7 @@ interface HTMLStyleElement extends HTMLElement, LinkStyle {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLStyleElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLStyleElement";
 }
 
 declare var HTMLStyleElement: {
@@ -17193,6 +17450,7 @@ interface HTMLTableCaptionElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTableCaptionElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLTableCaptionElement";
 }
 
 declare var HTMLTableCaptionElement: {
@@ -17294,6 +17552,7 @@ interface HTMLTableCellElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTableCellElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var HTMLTableCellElement: {
@@ -17347,6 +17606,7 @@ interface HTMLTableColElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTableColElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLTableColElement";
 }
 
 declare var HTMLTableColElement: {
@@ -17519,6 +17779,7 @@ interface HTMLTableElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTableElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLTableElement";
 }
 
 declare var HTMLTableElement: {
@@ -17609,6 +17870,7 @@ interface HTMLTableRowElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTableRowElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLTableRowElement";
 }
 
 declare var HTMLTableRowElement: {
@@ -17672,6 +17934,7 @@ interface HTMLTableSectionElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTableSectionElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLTableSectionElement";
 }
 
 declare var HTMLTableSectionElement: {
@@ -17719,6 +17982,7 @@ interface HTMLTemplateElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTemplateElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLTemplateElement";
 }
 
 declare var HTMLTemplateElement: {
@@ -17917,6 +18181,7 @@ interface HTMLTextAreaElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTextAreaElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLTextAreaElement";
 }
 
 declare var HTMLTextAreaElement: {
@@ -17940,6 +18205,7 @@ interface HTMLTimeElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTimeElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLTimeElement";
 }
 
 declare var HTMLTimeElement: {
@@ -17963,6 +18229,7 @@ interface HTMLTitleElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTitleElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLTitleElement";
 }
 
 declare var HTMLTitleElement: {
@@ -18026,6 +18293,7 @@ interface HTMLTrackElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLTrackElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLTrackElement";
 }
 
 declare var HTMLTrackElement: {
@@ -18056,6 +18324,7 @@ interface HTMLUListElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLUListElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLUListElement";
 }
 
 declare var HTMLUListElement: {
@@ -18073,6 +18342,7 @@ interface HTMLUnknownElement extends HTMLElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLUnknownElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLUnknownElement";
 }
 
 declare var HTMLUnknownElement: {
@@ -18160,6 +18430,7 @@ interface HTMLVideoElement extends HTMLMediaElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLVideoElementEventMap>(type: K, listener: (this: HTMLVideoElement, ev: HTMLVideoElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "HTMLVideoElement";
 }
 
 declare var HTMLVideoElement: {
@@ -18185,6 +18456,7 @@ interface HashChangeEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HashChangeEvent/oldURL)
      */
     readonly oldURL: string;
+    readonly [Symbol.toStringTag]: "HashChangeEvent";
 }
 
 declare var HashChangeEvent: {
@@ -18235,6 +18507,7 @@ interface Headers {
      */
     set(name: string, value: string): void;
     forEach(callbackfn: (value: string, key: string, parent: Headers) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "Headers";
 }
 
 declare var Headers: {
@@ -18261,6 +18534,7 @@ interface Highlight {
      */
     type: HighlightType;
     forEach(callbackfn: (value: AbstractRange, key: AbstractRange, parent: Highlight) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "Highlight";
 }
 
 declare var Highlight: {
@@ -18275,6 +18549,7 @@ declare var Highlight: {
  */
 interface HighlightRegistry {
     forEach(callbackfn: (value: Highlight, key: string, parent: HighlightRegistry) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "HighlightRegistry";
 }
 
 declare var HighlightRegistry: {
@@ -18336,6 +18611,7 @@ interface History {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/History/replaceState)
      */
     replaceState(data: any, unused: string, url?: string | URL | null): void;
+    readonly [Symbol.toStringTag]: "History";
 }
 
 declare var History: {
@@ -18409,6 +18685,7 @@ interface IDBCursor {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBCursor/update)
      */
     update(value: any): IDBRequest<IDBValidKey>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var IDBCursor: {
@@ -18428,6 +18705,7 @@ interface IDBCursorWithValue extends IDBCursor {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBCursorWithValue/value)
      */
     readonly value: any;
+    readonly [Symbol.toStringTag]: "IDBCursorWithValue";
 }
 
 declare var IDBCursorWithValue: {
@@ -18501,6 +18779,7 @@ interface IDBDatabase extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBDatabaseEventMap>(type: K, listener: (this: IDBDatabase, ev: IDBDatabaseEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "IDBDatabase";
 }
 
 declare var IDBDatabase: {
@@ -18538,6 +18817,7 @@ interface IDBFactory {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBFactory/open)
      */
     open(name: string, version?: number): IDBOpenDBRequest;
+    readonly [Symbol.toStringTag]: "IDBFactory";
 }
 
 declare var IDBFactory: {
@@ -18623,6 +18903,7 @@ interface IDBIndex {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBIndex/openKeyCursor)
      */
     openKeyCursor(query?: IDBValidKey | IDBKeyRange | null, direction?: IDBCursorDirection): IDBRequest<IDBCursor | null>;
+    readonly [Symbol.toStringTag]: "IDBIndex";
 }
 
 declare var IDBIndex: {
@@ -18666,6 +18947,7 @@ interface IDBKeyRange {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBKeyRange/includes)
      */
     includes(key: any): boolean;
+    readonly [Symbol.toStringTag]: "IDBKeyRange";
 }
 
 declare var IDBKeyRange: {
@@ -18817,6 +19099,7 @@ interface IDBObjectStore {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBObjectStore/put)
      */
     put(value: any, key?: IDBValidKey): IDBRequest<IDBValidKey>;
+    readonly [Symbol.toStringTag]: "IDBObjectStore";
 }
 
 declare var IDBObjectStore: {
@@ -18843,6 +19126,7 @@ interface IDBOpenDBRequest extends IDBRequest<IDBDatabase> {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBOpenDBRequestEventMap>(type: K, listener: (this: IDBOpenDBRequest, ev: IDBOpenDBRequestEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "IDBOpenDBRequest";
 }
 
 declare var IDBOpenDBRequest: {
@@ -18899,6 +19183,7 @@ interface IDBRequest<T = any> extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBRequestEventMap>(type: K, listener: (this: IDBRequest<T>, ev: IDBRequestEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var IDBRequest: {
@@ -18976,6 +19261,7 @@ interface IDBTransaction extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBTransactionEventMap>(type: K, listener: (this: IDBTransaction, ev: IDBTransactionEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "IDBTransaction";
 }
 
 declare var IDBTransaction: {
@@ -19001,6 +19287,7 @@ interface IDBVersionChangeEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBVersionChangeEvent/oldVersion)
      */
     readonly oldVersion: number;
+    readonly [Symbol.toStringTag]: "IDBVersionChangeEvent";
 }
 
 declare var IDBVersionChangeEvent: {
@@ -19020,6 +19307,7 @@ interface IIRFilterNode extends AudioNode {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IIRFilterNode/getFrequencyResponse)
      */
     getFrequencyResponse(frequencyHz: Float32Array<ArrayBuffer>, magResponse: Float32Array<ArrayBuffer>, phaseResponse: Float32Array<ArrayBuffer>): void;
+    readonly [Symbol.toStringTag]: "IIRFilterNode";
 }
 
 declare var IIRFilterNode: {
@@ -19045,6 +19333,7 @@ interface IdleDeadline {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IdleDeadline/timeRemaining)
      */
     timeRemaining(): DOMHighResTimeStamp;
+    readonly [Symbol.toStringTag]: "IdleDeadline";
 }
 
 declare var IdleDeadline: {
@@ -19076,6 +19365,7 @@ interface ImageBitmap {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageBitmap/close)
      */
     close(): void;
+    readonly [Symbol.toStringTag]: "ImageBitmap";
 }
 
 declare var ImageBitmap: {
@@ -19101,6 +19391,7 @@ interface ImageBitmapRenderingContext {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageBitmapRenderingContext/transferFromImageBitmap)
      */
     transferFromImageBitmap(bitmap: ImageBitmap | null): void;
+    readonly [Symbol.toStringTag]: "ImageBitmapRenderingContext";
 }
 
 declare var ImageBitmapRenderingContext: {
@@ -19145,6 +19436,7 @@ interface ImageCapture {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageCapture/takePhoto)
      */
     takePhoto(photoSettings?: PhotoSettings): Promise<Blob>;
+    readonly [Symbol.toStringTag]: "ImageCapture";
 }
 
 declare var ImageCapture: {
@@ -19182,6 +19474,7 @@ interface ImageData {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageData/width)
      */
     readonly width: number;
+    readonly [Symbol.toStringTag]: "ImageData";
 }
 
 declare var ImageData: {
@@ -19239,6 +19532,7 @@ interface ImageDecoder {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageDecoder/reset)
      */
     reset(): void;
+    readonly [Symbol.toStringTag]: "ImageDecoder";
 }
 
 declare var ImageDecoder: {
@@ -19282,6 +19576,7 @@ interface ImageTrack {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageTrack/selected)
      */
     selected: boolean;
+    readonly [Symbol.toStringTag]: "ImageTrack";
 }
 
 declare var ImageTrack: {
@@ -19320,6 +19615,7 @@ interface ImageTrackList {
      */
     readonly selectedTrack: ImageTrack | null;
     [index: number]: ImageTrack;
+    readonly [Symbol.toStringTag]: "ImageTrackList";
 }
 
 declare var ImageTrackList: {
@@ -19345,6 +19641,7 @@ interface InputDeviceInfo extends MediaDeviceInfo {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/InputDeviceInfo/getCapabilities)
      */
     getCapabilities(): MediaTrackCapabilities;
+    readonly [Symbol.toStringTag]: "InputDeviceInfo";
 }
 
 declare var InputDeviceInfo: {
@@ -19388,6 +19685,7 @@ interface InputEvent extends UIEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/InputEvent/getTargetRanges)
      */
     getTargetRanges(): StaticRange[];
+    readonly [Symbol.toStringTag]: "InputEvent";
 }
 
 declare var InputEvent: {
@@ -19449,6 +19747,7 @@ interface IntersectionObserver {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IntersectionObserver/unobserve)
      */
     unobserve(target: Element): void;
+    readonly [Symbol.toStringTag]: "IntersectionObserver";
 }
 
 declare var IntersectionObserver: {
@@ -19504,6 +19803,7 @@ interface IntersectionObserverEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IntersectionObserverEntry/time)
      */
     readonly time: DOMHighResTimeStamp;
+    readonly [Symbol.toStringTag]: "IntersectionObserverEntry";
 }
 
 declare var IntersectionObserverEntry: {
@@ -19611,6 +19911,7 @@ interface KeyboardEvent extends UIEvent {
     readonly DOM_KEY_LOCATION_LEFT: 0x01;
     readonly DOM_KEY_LOCATION_RIGHT: 0x02;
     readonly DOM_KEY_LOCATION_NUMPAD: 0x03;
+    readonly [Symbol.toStringTag]: "KeyboardEvent";
 }
 
 declare var KeyboardEvent: {
@@ -19664,6 +19965,7 @@ interface KeyframeEffect extends AnimationEffect {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/KeyframeEffect/setKeyframes)
      */
     setKeyframes(keyframes: Keyframe[] | PropertyIndexedKeyframes | null): void;
+    readonly [Symbol.toStringTag]: "KeyframeEffect";
 }
 
 declare var KeyframeEffect: {
@@ -19720,6 +20022,7 @@ interface LargestContentfulPaint extends PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/LargestContentfulPaint/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "LargestContentfulPaint";
 }
 
 declare var LargestContentfulPaint: {
@@ -19817,6 +20120,7 @@ interface Location {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Location/replace)
      */
     replace(url: string | URL): void;
+    readonly [Symbol.toStringTag]: "Location";
 }
 
 declare var Location: {
@@ -19843,6 +20147,7 @@ interface Lock {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Lock/name)
      */
     readonly name: string;
+    readonly [Symbol.toStringTag]: "Lock";
 }
 
 declare var Lock: {
@@ -19870,6 +20175,7 @@ interface LockManager {
      */
     request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
     request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    readonly [Symbol.toStringTag]: "LockManager";
 }
 
 declare var LockManager: {
@@ -19912,6 +20218,7 @@ interface MIDIAccess extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MIDIAccessEventMap>(type: K, listener: (this: MIDIAccess, ev: MIDIAccessEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MIDIAccess";
 }
 
 declare var MIDIAccess: {
@@ -19932,6 +20239,7 @@ interface MIDIConnectionEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MIDIConnectionEvent/port)
      */
     readonly port: MIDIPort | null;
+    readonly [Symbol.toStringTag]: "MIDIConnectionEvent";
 }
 
 declare var MIDIConnectionEvent: {
@@ -19956,6 +20264,7 @@ interface MIDIInput extends MIDIPort {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MIDIInputEventMap>(type: K, listener: (this: MIDIInput, ev: MIDIInputEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MIDIInput";
 }
 
 declare var MIDIInput: {
@@ -19971,6 +20280,7 @@ declare var MIDIInput: {
  */
 interface MIDIInputMap {
     forEach(callbackfn: (value: MIDIInput, key: string, parent: MIDIInputMap) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "MIDIInputMap";
 }
 
 declare var MIDIInputMap: {
@@ -19991,6 +20301,7 @@ interface MIDIMessageEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MIDIMessageEvent/data)
      */
     readonly data: Uint8Array<ArrayBuffer> | null;
+    readonly [Symbol.toStringTag]: "MIDIMessageEvent";
 }
 
 declare var MIDIMessageEvent: {
@@ -20015,6 +20326,7 @@ interface MIDIOutput extends MIDIPort {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MIDIPortEventMap>(type: K, listener: (this: MIDIOutput, ev: MIDIPortEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MIDIOutput";
 }
 
 declare var MIDIOutput: {
@@ -20030,6 +20342,7 @@ declare var MIDIOutput: {
  */
 interface MIDIOutputMap {
     forEach(callbackfn: (value: MIDIOutput, key: string, parent: MIDIOutputMap) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "MIDIOutputMap";
 }
 
 declare var MIDIOutputMap: {
@@ -20108,6 +20421,7 @@ interface MIDIPort extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MIDIPortEventMap>(type: K, listener: (this: MIDIPort, ev: MIDIPortEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var MIDIPort: {
@@ -20128,6 +20442,7 @@ interface MathMLElement extends Element, ElementCSSInlineStyle, GlobalEventHandl
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MathMLElementEventMap>(type: K, listener: (this: MathMLElement, ev: MathMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MathMLElement";
 }
 
 declare var MathMLElement: {
@@ -20153,6 +20468,7 @@ interface MediaCapabilities {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaCapabilities/encodingInfo)
      */
     encodingInfo(configuration: MediaEncodingConfiguration): Promise<MediaCapabilitiesEncodingInfo>;
+    readonly [Symbol.toStringTag]: "MediaCapabilities";
 }
 
 declare var MediaCapabilities: {
@@ -20197,6 +20513,7 @@ interface MediaDeviceInfo {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaDeviceInfo/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var MediaDeviceInfo: {
@@ -20245,6 +20562,7 @@ interface MediaDevices extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MediaDevicesEventMap>(type: K, listener: (this: MediaDevices, ev: MediaDevicesEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MediaDevices";
 }
 
 declare var MediaDevices: {
@@ -20264,6 +20582,7 @@ interface MediaElementAudioSourceNode extends AudioNode {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaElementAudioSourceNode/mediaElement)
      */
     readonly mediaElement: HTMLMediaElement;
+    readonly [Symbol.toStringTag]: "MediaElementAudioSourceNode";
 }
 
 declare var MediaElementAudioSourceNode: {
@@ -20289,6 +20608,7 @@ interface MediaEncryptedEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaEncryptedEvent/initDataType)
      */
     readonly initDataType: string;
+    readonly [Symbol.toStringTag]: "MediaEncryptedEvent";
 }
 
 declare var MediaEncryptedEvent: {
@@ -20318,6 +20638,7 @@ interface MediaError {
     readonly MEDIA_ERR_NETWORK: 2;
     readonly MEDIA_ERR_DECODE: 3;
     readonly MEDIA_ERR_SRC_NOT_SUPPORTED: 4;
+    readonly [Symbol.toStringTag]: "MediaError";
 }
 
 declare var MediaError: {
@@ -20348,6 +20669,7 @@ interface MediaKeyMessageEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaKeyMessageEvent/messageType)
      */
     readonly messageType: MediaKeyMessageType;
+    readonly [Symbol.toStringTag]: "MediaKeyMessageEvent";
 }
 
 declare var MediaKeyMessageEvent: {
@@ -20429,6 +20751,7 @@ interface MediaKeySession extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MediaKeySessionEventMap>(type: K, listener: (this: MediaKeySession, ev: MediaKeySessionEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MediaKeySession";
 }
 
 declare var MediaKeySession: {
@@ -20462,6 +20785,7 @@ interface MediaKeyStatusMap {
      */
     has(keyId: BufferSource): boolean;
     forEach(callbackfn: (value: MediaKeyStatus, key: BufferSource, parent: MediaKeyStatusMap) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "MediaKeyStatusMap";
 }
 
 declare var MediaKeyStatusMap: {
@@ -20494,6 +20818,7 @@ interface MediaKeySystemAccess {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaKeySystemAccess/getConfiguration)
      */
     getConfiguration(): MediaKeySystemConfiguration;
+    readonly [Symbol.toStringTag]: "MediaKeySystemAccess";
 }
 
 declare var MediaKeySystemAccess: {
@@ -20526,6 +20851,7 @@ interface MediaKeys {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaKeys/setServerCertificate)
      */
     setServerCertificate(serverCertificate: BufferSource): Promise<boolean>;
+    readonly [Symbol.toStringTag]: "MediaKeys";
 }
 
 declare var MediaKeys: {
@@ -20571,6 +20897,7 @@ interface MediaList {
      */
     item(index: number): string | null;
     [index: number]: string;
+    readonly [Symbol.toStringTag]: "MediaList";
 }
 
 declare var MediaList: {
@@ -20608,6 +20935,7 @@ interface MediaMetadata {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaMetadata/title)
      */
     title: string;
+    readonly [Symbol.toStringTag]: "MediaMetadata";
 }
 
 declare var MediaMetadata: {
@@ -20657,6 +20985,7 @@ interface MediaQueryList extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MediaQueryListEventMap>(type: K, listener: (this: MediaQueryList, ev: MediaQueryListEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MediaQueryList";
 }
 
 declare var MediaQueryList: {
@@ -20682,6 +21011,7 @@ interface MediaQueryListEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaQueryListEvent/media)
      */
     readonly media: string;
+    readonly [Symbol.toStringTag]: "MediaQueryListEvent";
 }
 
 declare var MediaQueryListEvent: {
@@ -20780,6 +21110,7 @@ interface MediaRecorder extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MediaRecorderEventMap>(type: K, listener: (this: MediaRecorder, ev: MediaRecorderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MediaRecorder";
 }
 
 declare var MediaRecorder: {
@@ -20835,6 +21166,7 @@ interface MediaSession {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaSession/setPositionState)
      */
     setPositionState(state?: MediaPositionState): void;
+    readonly [Symbol.toStringTag]: "MediaSession";
 }
 
 declare var MediaSession: {
@@ -20918,6 +21250,7 @@ interface MediaSource extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MediaSourceEventMap>(type: K, listener: (this: MediaSource, ev: MediaSourceEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MediaSource";
 }
 
 declare var MediaSource: {
@@ -20943,6 +21276,7 @@ declare var MediaSource: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaSourceHandle)
  */
 interface MediaSourceHandle {
+    readonly [Symbol.toStringTag]: "MediaSourceHandle";
 }
 
 declare var MediaSourceHandle: {
@@ -21023,6 +21357,7 @@ interface MediaStream extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MediaStreamEventMap>(type: K, listener: (this: MediaStream, ev: MediaStreamEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MediaStream";
 }
 
 declare var MediaStream: {
@@ -21044,6 +21379,7 @@ interface MediaStreamAudioDestinationNode extends AudioNode {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaStreamAudioDestinationNode/stream)
      */
     readonly stream: MediaStream;
+    readonly [Symbol.toStringTag]: "MediaStreamAudioDestinationNode";
 }
 
 declare var MediaStreamAudioDestinationNode: {
@@ -21063,6 +21399,7 @@ interface MediaStreamAudioSourceNode extends AudioNode {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaStreamAudioSourceNode/mediaStream)
      */
     readonly mediaStream: MediaStream;
+    readonly [Symbol.toStringTag]: "MediaStreamAudioSourceNode";
 }
 
 declare var MediaStreamAudioSourceNode: {
@@ -21170,6 +21507,7 @@ interface MediaStreamTrack extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MediaStreamTrackEventMap>(type: K, listener: (this: MediaStreamTrack, ev: MediaStreamTrackEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var MediaStreamTrack: {
@@ -21189,6 +21527,7 @@ interface MediaStreamTrackEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaStreamTrackEvent/track)
      */
     readonly track: MediaStreamTrack;
+    readonly [Symbol.toStringTag]: "MediaStreamTrackEvent";
 }
 
 declare var MediaStreamTrackEvent: {
@@ -21214,6 +21553,7 @@ interface MessageChannel {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MessageChannel/port2)
      */
     readonly port2: MessagePort;
+    readonly [Symbol.toStringTag]: "MessageChannel";
 }
 
 declare var MessageChannel: {
@@ -21259,6 +21599,7 @@ interface MessageEvent<T = any> extends Event {
     readonly source: MessageEventSource | null;
     /** @deprecated */
     initMessageEvent(type: string, bubbles?: boolean, cancelable?: boolean, data?: any, origin?: string, lastEventId?: string, source?: MessageEventSource | null, ports?: MessagePort[]): void;
+    readonly [Symbol.toStringTag]: "MessageEvent";
 }
 
 declare var MessageEvent: {
@@ -21316,6 +21657,7 @@ interface MessagePort extends EventTarget, MessageEventTarget<MessagePort> {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MessagePortEventMap>(type: K, listener: (this: MessagePort, ev: MessagePortEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MessagePort";
 }
 
 declare var MessagePort: {
@@ -21350,6 +21692,7 @@ interface MimeType {
      * @deprecated
      */
     readonly type: string;
+    readonly [Symbol.toStringTag]: "MimeType";
 }
 
 /** @deprecated */
@@ -21372,6 +21715,7 @@ interface MimeTypeArray {
     /** @deprecated */
     namedItem(name: string): MimeType | null;
     [index: number]: MimeType;
+    readonly [Symbol.toStringTag]: "MimeTypeArray";
 }
 
 /** @deprecated */
@@ -21525,6 +21869,7 @@ interface MouseEvent extends UIEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MouseEvent/initMouseEvent)
      */
     initMouseEvent(typeArg: string, canBubbleArg: boolean, cancelableArg: boolean, viewArg: Window, detailArg: number, screenXArg: number, screenYArg: number, clientXArg: number, clientYArg: number, ctrlKeyArg: boolean, altKeyArg: boolean, shiftKeyArg: boolean, metaKeyArg: boolean, buttonArg: number, relatedTargetArg: EventTarget | null): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var MouseEvent: {
@@ -21556,6 +21901,7 @@ interface MutationObserver {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MutationObserver/takeRecords)
      */
     takeRecords(): MutationRecord[];
+    readonly [Symbol.toStringTag]: "MutationObserver";
 }
 
 declare var MutationObserver: {
@@ -21623,6 +21969,7 @@ interface MutationRecord {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MutationRecord/type)
      */
     readonly type: MutationRecordType;
+    readonly [Symbol.toStringTag]: "MutationRecord";
 }
 
 declare var MutationRecord: {
@@ -21685,6 +22032,7 @@ interface NamedNodeMap {
      */
     setNamedItemNS(attr: Attr): Attr | null;
     [index: number]: Attr;
+    readonly [Symbol.toStringTag]: "NamedNodeMap";
 }
 
 declare var NamedNodeMap: {
@@ -21716,6 +22064,7 @@ interface NavigationActivation {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/NavigationActivation/navigationType)
      */
     readonly navigationType: NavigationType;
+    readonly [Symbol.toStringTag]: "NavigationActivation";
 }
 
 declare var NavigationActivation: {
@@ -21775,6 +22124,7 @@ interface NavigationHistoryEntry extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof NavigationHistoryEntryEventMap>(type: K, listener: (this: NavigationHistoryEntry, ev: NavigationHistoryEntryEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "NavigationHistoryEntry";
 }
 
 declare var NavigationHistoryEntry: {
@@ -21813,6 +22163,7 @@ interface NavigationPreloadManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/NavigationPreloadManager/setHeaderValue)
      */
     setHeaderValue(value: string): Promise<void>;
+    readonly [Symbol.toStringTag]: "NavigationPreloadManager";
 }
 
 declare var NavigationPreloadManager: {
@@ -21950,6 +22301,7 @@ interface Navigator extends NavigatorAutomationInformation, NavigatorBadge, Navi
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Navigator/vibrate)
      */
     vibrate(pattern: VibratePattern): boolean;
+    readonly [Symbol.toStringTag]: "Navigator";
 }
 
 declare var Navigator: {
@@ -22036,6 +22388,7 @@ interface NavigatorLogin {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/NavigatorLogin/setStatus)
      */
     setStatus(status: LoginStatus): Promise<void>;
+    readonly [Symbol.toStringTag]: "NavigatorLogin";
 }
 
 declare var NavigatorLogin: {
@@ -22276,6 +22629,7 @@ interface Node extends EventTarget {
     /** Set when other is a descendant of node. */
     readonly DOCUMENT_POSITION_CONTAINED_BY: 0x10;
     readonly DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC: 0x20;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Node: {
@@ -22369,6 +22723,7 @@ interface NodeIterator {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/NodeIterator/previousNode)
      */
     previousNode(): Node | null;
+    readonly [Symbol.toStringTag]: "NodeIterator";
 }
 
 declare var NodeIterator: {
@@ -22396,6 +22751,7 @@ interface NodeList {
     item(index: number): Node | null;
     forEach(callbackfn: (value: Node, key: number, parent: NodeList) => void, thisArg?: any): void;
     [index: number]: Node;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var NodeList: {
@@ -22518,6 +22874,7 @@ interface Notification extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof NotificationEventMap>(type: K, listener: (this: Notification, ev: NotificationEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "Notification";
 }
 
 declare var Notification: {
@@ -22708,6 +23065,7 @@ interface OfflineAudioCompletionEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/OfflineAudioCompletionEvent/renderedBuffer)
      */
     readonly renderedBuffer: AudioBuffer;
+    readonly [Symbol.toStringTag]: "OfflineAudioCompletionEvent";
 }
 
 declare var OfflineAudioCompletionEvent: {
@@ -22755,6 +23113,7 @@ interface OfflineAudioContext extends BaseAudioContext {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof OfflineAudioContextEventMap>(type: K, listener: (this: OfflineAudioContext, ev: OfflineAudioContextEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "OfflineAudioContext";
 }
 
 declare var OfflineAudioContext: {
@@ -22816,6 +23175,7 @@ interface OffscreenCanvas extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof OffscreenCanvasEventMap>(type: K, listener: (this: OffscreenCanvas, ev: OffscreenCanvasEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "OffscreenCanvas";
 }
 
 declare var OffscreenCanvas: {
@@ -22831,6 +23191,7 @@ declare var OffscreenCanvas: {
 interface OffscreenCanvasRenderingContext2D extends CanvasCompositing, CanvasDrawImage, CanvasDrawPath, CanvasFillStrokeStyles, CanvasFilters, CanvasImageData, CanvasImageSmoothing, CanvasPath, CanvasPathDrawingStyles, CanvasRect, CanvasShadowStyles, CanvasState, CanvasText, CanvasTextDrawingStyles, CanvasTransform {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/canvas) */
     readonly canvas: OffscreenCanvas;
+    readonly [Symbol.toStringTag]: "OffscreenCanvasRenderingContext2D";
 }
 
 declare var OffscreenCanvasRenderingContext2D: {
@@ -22872,6 +23233,7 @@ interface OscillatorNode extends AudioScheduledSourceNode {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AudioScheduledSourceNodeEventMap>(type: K, listener: (this: OscillatorNode, ev: AudioScheduledSourceNodeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "OscillatorNode";
 }
 
 declare var OscillatorNode: {
@@ -22891,6 +23253,7 @@ interface OverconstrainedError extends DOMException {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/OverconstrainedError/constraint)
      */
     readonly constraint: string;
+    readonly [Symbol.toStringTag]: "OverconstrainedError";
 }
 
 declare var OverconstrainedError: {
@@ -22910,6 +23273,7 @@ interface PageRevealEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PageRevealEvent/viewTransition)
      */
     readonly viewTransition: ViewTransition | null;
+    readonly [Symbol.toStringTag]: "PageRevealEvent";
 }
 
 declare var PageRevealEvent: {
@@ -22935,6 +23299,7 @@ interface PageSwapEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PageSwapEvent/viewTransition)
      */
     readonly viewTransition: ViewTransition | null;
+    readonly [Symbol.toStringTag]: "PageSwapEvent";
 }
 
 declare var PageSwapEvent: {
@@ -22954,6 +23319,7 @@ interface PageTransitionEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PageTransitionEvent/persisted)
      */
     readonly persisted: boolean;
+    readonly [Symbol.toStringTag]: "PageTransitionEvent";
 }
 
 declare var PageTransitionEvent: {
@@ -23065,6 +23431,7 @@ interface PannerNode extends AudioNode {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PannerNode/setPosition)
      */
     setPosition(x: number, y: number, z: number): void;
+    readonly [Symbol.toStringTag]: "PannerNode";
 }
 
 declare var PannerNode: {
@@ -23155,6 +23522,7 @@ interface Path2D extends CanvasPath {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Path2D/addPath)
      */
     addPath(path: Path2D, transform?: DOMMatrix2DInit): void;
+    readonly [Symbol.toStringTag]: "Path2D";
 }
 
 declare var Path2D: {
@@ -23234,6 +23602,7 @@ interface PaymentAddress {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ContactAddress/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "PaymentAddress";
 }
 
 declare var PaymentAddress: {
@@ -23260,6 +23629,7 @@ interface PaymentMethodChangeEvent extends PaymentRequestUpdateEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PaymentMethodChangeEvent/methodName)
      */
     readonly methodName: string;
+    readonly [Symbol.toStringTag]: "PaymentMethodChangeEvent";
 }
 
 declare var PaymentMethodChangeEvent: {
@@ -23343,6 +23713,7 @@ interface PaymentRequest extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof PaymentRequestEventMap>(type: K, listener: (this: PaymentRequest, ev: PaymentRequestEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "PaymentRequest";
 }
 
 declare var PaymentRequest: {
@@ -23363,6 +23734,7 @@ interface PaymentRequestUpdateEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PaymentRequestUpdateEvent/updateWith)
      */
     updateWith(detailsPromise: PaymentDetailsUpdate | PromiseLike<PaymentDetailsUpdate>): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var PaymentRequestUpdateEvent: {
@@ -23453,6 +23825,7 @@ interface PaymentResponse extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof PaymentResponseEventMap>(type: K, listener: (this: PaymentResponse, ev: PaymentResponseEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "PaymentResponse";
 }
 
 declare var PaymentResponse: {
@@ -23568,6 +23941,7 @@ interface Performance extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof PerformanceEventMap>(type: K, listener: (this: Performance, ev: PerformanceEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "Performance";
 }
 
 declare var Performance: {
@@ -23611,6 +23985,7 @@ interface PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceEntry/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var PerformanceEntry: {
@@ -23660,6 +24035,7 @@ interface PerformanceEventTiming extends PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceEventTiming/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "PerformanceEventTiming";
 }
 
 declare var PerformanceEventTiming: {
@@ -23679,6 +24055,7 @@ interface PerformanceMark extends PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceMark/detail)
      */
     readonly detail: any;
+    readonly [Symbol.toStringTag]: "PerformanceMark";
 }
 
 declare var PerformanceMark: {
@@ -23698,6 +24075,7 @@ interface PerformanceMeasure extends PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceMeasure/detail)
      */
     readonly detail: any;
+    readonly [Symbol.toStringTag]: "PerformanceMeasure";
 }
 
 declare var PerformanceMeasure: {
@@ -23737,6 +24115,7 @@ interface PerformanceNavigation {
     readonly TYPE_RELOAD: 1;
     readonly TYPE_BACK_FORWARD: 2;
     readonly TYPE_RESERVED: 255;
+    readonly [Symbol.toStringTag]: "PerformanceNavigation";
 }
 
 /** @deprecated */
@@ -23821,6 +24200,7 @@ interface PerformanceNavigationTiming extends PerformanceResourceTiming {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceNavigationTiming/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "PerformanceNavigationTiming";
 }
 
 declare var PerformanceNavigationTiming: {
@@ -23852,6 +24232,7 @@ interface PerformanceObserver {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceObserver/takeRecords)
      */
     takeRecords(): PerformanceEntryList;
+    readonly [Symbol.toStringTag]: "PerformanceObserver";
 }
 
 declare var PerformanceObserver: {
@@ -23889,6 +24270,7 @@ interface PerformanceObserverEntryList {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceObserverEntryList/getEntriesByType)
      */
     getEntriesByType(type: string): PerformanceEntryList;
+    readonly [Symbol.toStringTag]: "PerformanceObserverEntryList";
 }
 
 declare var PerformanceObserverEntryList: {
@@ -23903,6 +24285,7 @@ declare var PerformanceObserverEntryList: {
  */
 interface PerformancePaintTiming extends PerformanceEntry {
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "PerformancePaintTiming";
 }
 
 declare var PerformancePaintTiming: {
@@ -24036,6 +24419,7 @@ interface PerformanceResourceTiming extends PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceResourceTiming/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var PerformanceResourceTiming: {
@@ -24073,6 +24457,7 @@ interface PerformanceServerTiming {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceServerTiming/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "PerformanceServerTiming";
 }
 
 declare var PerformanceServerTiming: {
@@ -24241,6 +24626,7 @@ interface PerformanceTiming {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceTiming/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "PerformanceTiming";
 }
 
 /** @deprecated */
@@ -24255,6 +24641,7 @@ declare var PerformanceTiming: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PeriodicWave)
  */
 interface PeriodicWave {
+    readonly [Symbol.toStringTag]: "PeriodicWave";
 }
 
 declare var PeriodicWave: {
@@ -24290,6 +24677,7 @@ interface PermissionStatus extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof PermissionStatusEventMap>(type: K, listener: (this: PermissionStatus, ev: PermissionStatusEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "PermissionStatus";
 }
 
 declare var PermissionStatus: {
@@ -24309,6 +24697,7 @@ interface Permissions {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Permissions/query)
      */
     query(permissionDesc: PermissionDescriptor): Promise<PermissionStatus>;
+    readonly [Symbol.toStringTag]: "Permissions";
 }
 
 declare var Permissions: {
@@ -24328,6 +24717,7 @@ interface PictureInPictureEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PictureInPictureEvent/pictureInPictureWindow)
      */
     readonly pictureInPictureWindow: PictureInPictureWindow;
+    readonly [Symbol.toStringTag]: "PictureInPictureEvent";
 }
 
 declare var PictureInPictureEvent: {
@@ -24363,6 +24753,7 @@ interface PictureInPictureWindow extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof PictureInPictureWindowEventMap>(type: K, listener: (this: PictureInPictureWindow, ev: PictureInPictureWindowEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "PictureInPictureWindow";
 }
 
 declare var PictureInPictureWindow: {
@@ -24405,6 +24796,7 @@ interface Plugin {
     /** @deprecated */
     namedItem(name: string): MimeType | null;
     [index: number]: MimeType;
+    readonly [Symbol.toStringTag]: "Plugin";
 }
 
 /** @deprecated */
@@ -24429,6 +24821,7 @@ interface PluginArray {
     /** @deprecated */
     refresh(): void;
     [index: number]: Plugin;
+    readonly [Symbol.toStringTag]: "PluginArray";
 }
 
 /** @deprecated */
@@ -24534,6 +24927,7 @@ interface PointerEvent extends MouseEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PointerEvent/getPredictedEvents)
      */
     getPredictedEvents(): PointerEvent[];
+    readonly [Symbol.toStringTag]: "PointerEvent";
 }
 
 declare var PointerEvent: {
@@ -24559,6 +24953,7 @@ interface PopStateEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PopStateEvent/state)
      */
     readonly state: any;
+    readonly [Symbol.toStringTag]: "PopStateEvent";
 }
 
 declare var PopStateEvent: {
@@ -24586,6 +24981,7 @@ interface ProcessingInstruction extends CharacterData, LinkStyle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ProcessingInstruction/target)
      */
     readonly target: string;
+    readonly [Symbol.toStringTag]: "ProcessingInstruction";
 }
 
 declare var ProcessingInstruction: {
@@ -24618,6 +25014,7 @@ interface ProgressEvent<T extends EventTarget = EventTarget> extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ProgressEvent/total)
      */
     readonly total: number;
+    readonly [Symbol.toStringTag]: "ProgressEvent";
 }
 
 declare var ProgressEvent: {
@@ -24643,6 +25040,7 @@ interface PromiseRejectionEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PromiseRejectionEvent/reason)
      */
     readonly reason: any;
+    readonly [Symbol.toStringTag]: "PromiseRejectionEvent";
 }
 
 declare var PromiseRejectionEvent: {
@@ -24687,6 +25085,7 @@ interface PublicKeyCredential extends Credential {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PublicKeyCredential/toJSON)
      */
     toJSON(): PublicKeyCredentialJSON;
+    readonly [Symbol.toStringTag]: "PublicKeyCredential";
 }
 
 declare var PublicKeyCredential: {
@@ -24767,6 +25166,7 @@ interface PushManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushManager/subscribe)
      */
     subscribe(options?: PushSubscriptionOptionsInit): Promise<PushSubscription>;
+    readonly [Symbol.toStringTag]: "PushManager";
 }
 
 declare var PushManager: {
@@ -24823,6 +25223,7 @@ interface PushSubscription {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushSubscription/unsubscribe)
      */
     unsubscribe(): Promise<boolean>;
+    readonly [Symbol.toStringTag]: "PushSubscription";
 }
 
 declare var PushSubscription: {
@@ -24849,6 +25250,7 @@ interface PushSubscriptionOptions {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushSubscriptionOptions/userVisibleOnly)
      */
     readonly userVisibleOnly: boolean;
+    readonly [Symbol.toStringTag]: "PushSubscriptionOptions";
 }
 
 declare var PushSubscriptionOptions: {
@@ -24874,6 +25276,7 @@ interface RTCCertificate {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCCertificate/getFingerprints)
      */
     getFingerprints(): RTCDtlsFingerprint[];
+    readonly [Symbol.toStringTag]: "RTCCertificate";
 }
 
 declare var RTCCertificate: {
@@ -24915,6 +25318,7 @@ interface RTCDTMFSender extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof RTCDTMFSenderEventMap>(type: K, listener: (this: RTCDTMFSender, ev: RTCDTMFSenderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "RTCDTMFSender";
 }
 
 declare var RTCDTMFSender: {
@@ -24934,6 +25338,7 @@ interface RTCDTMFToneChangeEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCDTMFToneChangeEvent/tone)
      */
     readonly tone: string;
+    readonly [Symbol.toStringTag]: "RTCDTMFToneChangeEvent";
 }
 
 declare var RTCDTMFToneChangeEvent: {
@@ -25053,6 +25458,7 @@ interface RTCDataChannel extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof RTCDataChannelEventMap>(type: K, listener: (this: RTCDataChannel, ev: RTCDataChannelEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "RTCDataChannel";
 }
 
 declare var RTCDataChannel: {
@@ -25072,6 +25478,7 @@ interface RTCDataChannelEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCDataChannelEvent/channel)
      */
     readonly channel: RTCDataChannel;
+    readonly [Symbol.toStringTag]: "RTCDataChannelEvent";
 }
 
 declare var RTCDataChannelEvent: {
@@ -25110,6 +25517,7 @@ interface RTCDtlsTransport extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof RTCDtlsTransportEventMap>(type: K, listener: (this: RTCDtlsTransport, ev: RTCDtlsTransportEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "RTCDtlsTransport";
 }
 
 declare var RTCDtlsTransport: {
@@ -25137,6 +25545,7 @@ interface RTCEncodedAudioFrame {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCEncodedAudioFrame/getMetadata)
      */
     getMetadata(): RTCEncodedAudioFrameMetadata;
+    readonly [Symbol.toStringTag]: "RTCEncodedAudioFrame";
 }
 
 declare var RTCEncodedAudioFrame: {
@@ -25170,6 +25579,7 @@ interface RTCEncodedVideoFrame {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCEncodedVideoFrame/getMetadata)
      */
     getMetadata(): RTCEncodedVideoFrameMetadata;
+    readonly [Symbol.toStringTag]: "RTCEncodedVideoFrame";
 }
 
 declare var RTCEncodedVideoFrame: {
@@ -25213,6 +25623,7 @@ interface RTCError extends DOMException {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCError/sentAlert)
      */
     readonly sentAlert: number | null;
+    readonly [Symbol.toStringTag]: "RTCError";
 }
 
 declare var RTCError: {
@@ -25232,6 +25643,7 @@ interface RTCErrorEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCErrorEvent/error)
      */
     readonly error: RTCError;
+    readonly [Symbol.toStringTag]: "RTCErrorEvent";
 }
 
 declare var RTCErrorEvent: {
@@ -25335,6 +25747,7 @@ interface RTCIceCandidate {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCIceCandidate/toJSON)
      */
     toJSON(): RTCIceCandidateInit;
+    readonly [Symbol.toStringTag]: "RTCIceCandidate";
 }
 
 declare var RTCIceCandidate: {
@@ -25390,6 +25803,7 @@ interface RTCIceTransport extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof RTCIceTransportEventMap>(type: K, listener: (this: RTCIceTransport, ev: RTCIceTransportEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "RTCIceTransport";
 }
 
 declare var RTCIceTransport: {
@@ -25621,6 +26035,7 @@ interface RTCPeerConnection extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof RTCPeerConnectionEventMap>(type: K, listener: (this: RTCPeerConnection, ev: RTCPeerConnectionEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "RTCPeerConnection";
 }
 
 declare var RTCPeerConnection: {
@@ -25650,6 +26065,7 @@ interface RTCPeerConnectionIceErrorEvent extends Event {
     readonly errorText: string;
     readonly port: number | null;
     readonly url: string;
+    readonly [Symbol.toStringTag]: "RTCPeerConnectionIceErrorEvent";
 }
 
 declare var RTCPeerConnectionIceErrorEvent: {
@@ -25669,6 +26085,7 @@ interface RTCPeerConnectionIceEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCPeerConnectionIceEvent/candidate)
      */
     readonly candidate: RTCIceCandidate | null;
+    readonly [Symbol.toStringTag]: "RTCPeerConnectionIceEvent";
 }
 
 declare var RTCPeerConnectionIceEvent: {
@@ -25730,6 +26147,7 @@ interface RTCRtpReceiver {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCRtpReceiver/getSynchronizationSources)
      */
     getSynchronizationSources(): RTCRtpSynchronizationSource[];
+    readonly [Symbol.toStringTag]: "RTCRtpReceiver";
 }
 
 declare var RTCRtpReceiver: {
@@ -25749,6 +26167,7 @@ declare var RTCRtpReceiver: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCRtpScriptTransform)
  */
 interface RTCRtpScriptTransform {
+    readonly [Symbol.toStringTag]: "RTCRtpScriptTransform";
 }
 
 declare var RTCRtpScriptTransform: {
@@ -25816,6 +26235,7 @@ interface RTCRtpSender {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCRtpSender/setStreams)
      */
     setStreams(...streams: MediaStream[]): void;
+    readonly [Symbol.toStringTag]: "RTCRtpSender";
 }
 
 declare var RTCRtpSender: {
@@ -25877,6 +26297,7 @@ interface RTCRtpTransceiver {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCRtpTransceiver/stop)
      */
     stop(): void;
+    readonly [Symbol.toStringTag]: "RTCRtpTransceiver";
 }
 
 declare var RTCRtpTransceiver: {
@@ -25924,6 +26345,7 @@ interface RTCSctpTransport extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof RTCSctpTransportEventMap>(type: K, listener: (this: RTCSctpTransport, ev: RTCSctpTransportEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "RTCSctpTransport";
 }
 
 declare var RTCSctpTransport: {
@@ -25955,6 +26377,7 @@ interface RTCSessionDescription {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCSessionDescription/toJSON)
      */
     toJSON(): RTCSessionDescriptionInit;
+    readonly [Symbol.toStringTag]: "RTCSessionDescription";
 }
 
 declare var RTCSessionDescription: {
@@ -25969,6 +26392,7 @@ declare var RTCSessionDescription: {
  */
 interface RTCStatsReport {
     forEach(callbackfn: (value: any, key: string, parent: RTCStatsReport) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "RTCStatsReport";
 }
 
 declare var RTCStatsReport: {
@@ -26006,6 +26430,7 @@ interface RTCTrackEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCTrackEvent/transceiver)
      */
     readonly transceiver: RTCRtpTransceiver;
+    readonly [Symbol.toStringTag]: "RTCTrackEvent";
 }
 
 declare var RTCTrackEvent: {
@@ -26025,6 +26450,7 @@ interface RadioNodeList extends NodeListOf<HTMLInputElement> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RadioNodeList/value)
      */
     value: string;
+    readonly [Symbol.toStringTag]: "RadioNodeList";
 }
 
 declare var RadioNodeList: {
@@ -26187,6 +26613,7 @@ interface Range extends AbstractRange {
     readonly START_TO_END: 1;
     readonly END_TO_END: 2;
     readonly END_TO_START: 3;
+    readonly [Symbol.toStringTag]: "Range";
 }
 
 declare var Range: {
@@ -26234,6 +26661,7 @@ interface ReadableByteStreamController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableByteStreamController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "ReadableByteStreamController";
 }
 
 declare var ReadableByteStreamController: {
@@ -26285,6 +26713,7 @@ interface ReadableStream<R = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStream/tee)
      */
     tee(): [ReadableStream<R>, ReadableStream<R>];
+    readonly [Symbol.toStringTag]: "ReadableStream";
 }
 
 declare var ReadableStream: {
@@ -26312,6 +26741,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/releaseLock)
      */
     releaseLock(): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamBYOBReader";
 }
 
 declare var ReadableStreamBYOBReader: {
@@ -26343,6 +26773,7 @@ interface ReadableStreamBYOBRequest {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBRequest/respondWithNewView)
      */
     respondWithNewView(view: ArrayBufferView<ArrayBuffer>): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamBYOBRequest";
 }
 
 declare var ReadableStreamBYOBRequest: {
@@ -26380,6 +26811,7 @@ interface ReadableStreamDefaultController<R = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamDefaultController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamDefaultController";
 }
 
 declare var ReadableStreamDefaultController: {
@@ -26405,6 +26837,7 @@ interface ReadableStreamDefaultReader<R = any> extends ReadableStreamGenericRead
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamDefaultReader/releaseLock)
      */
     releaseLock(): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamDefaultReader";
 }
 
 declare var ReadableStreamDefaultReader: {
@@ -26465,6 +26898,7 @@ interface RemotePlayback extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof RemotePlaybackEventMap>(type: K, listener: (this: RemotePlayback, ev: RemotePlaybackEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "RemotePlayback";
 }
 
 declare var RemotePlayback: {
@@ -26496,6 +26930,7 @@ interface ReportingObserver {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReportingObserver/takeRecords)
      */
     takeRecords(): ReportList;
+    readonly [Symbol.toStringTag]: "ReportingObserver";
 }
 
 declare var ReportingObserver: {
@@ -26593,6 +27028,7 @@ interface Request extends Body {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Request/clone)
      */
     clone(): Request;
+    readonly [Symbol.toStringTag]: "Request";
 }
 
 declare var Request: {
@@ -26624,6 +27060,7 @@ interface ResizeObserver {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ResizeObserver/unobserve)
      */
     unobserve(target: Element): void;
+    readonly [Symbol.toStringTag]: "ResizeObserver";
 }
 
 declare var ResizeObserver: {
@@ -26667,6 +27104,7 @@ interface ResizeObserverEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ResizeObserverEntry/target)
      */
     readonly target: Element;
+    readonly [Symbol.toStringTag]: "ResizeObserverEntry";
 }
 
 declare var ResizeObserverEntry: {
@@ -26692,6 +27130,7 @@ interface ResizeObserverSize {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ResizeObserverSize/inlineSize)
      */
     readonly inlineSize: number;
+    readonly [Symbol.toStringTag]: "ResizeObserverSize";
 }
 
 declare var ResizeObserverSize: {
@@ -26753,6 +27192,7 @@ interface Response extends Body {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Response/clone)
      */
     clone(): Response;
+    readonly [Symbol.toStringTag]: "Response";
 }
 
 declare var Response: {
@@ -26813,6 +27253,7 @@ interface SVGAElement extends SVGGraphicsElement, SVGURIReference {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGAElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGAElement";
 }
 
 declare var SVGAElement: {
@@ -26867,6 +27308,7 @@ interface SVGAngle {
     readonly SVG_ANGLETYPE_DEG: 2;
     readonly SVG_ANGLETYPE_RAD: 3;
     readonly SVG_ANGLETYPE_GRAD: 4;
+    readonly [Symbol.toStringTag]: "SVGAngle";
 }
 
 declare var SVGAngle: {
@@ -26889,6 +27331,7 @@ interface SVGAnimateElement extends SVGAnimationElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGAnimateElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGAnimateElement";
 }
 
 declare var SVGAnimateElement: {
@@ -26906,6 +27349,7 @@ interface SVGAnimateMotionElement extends SVGAnimationElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGAnimateMotionElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGAnimateMotionElement";
 }
 
 declare var SVGAnimateMotionElement: {
@@ -26923,6 +27367,7 @@ interface SVGAnimateTransformElement extends SVGAnimationElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGAnimateTransformElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGAnimateTransformElement";
 }
 
 declare var SVGAnimateTransformElement: {
@@ -26948,6 +27393,7 @@ interface SVGAnimatedAngle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SVGAnimatedAngle/baseVal)
      */
     readonly baseVal: SVGAngle;
+    readonly [Symbol.toStringTag]: "SVGAnimatedAngle";
 }
 
 declare var SVGAnimatedAngle: {
@@ -26973,6 +27419,7 @@ interface SVGAnimatedBoolean {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SVGAnimatedBoolean/baseVal)
      */
     baseVal: boolean;
+    readonly [Symbol.toStringTag]: "SVGAnimatedBoolean";
 }
 
 declare var SVGAnimatedBoolean: {
@@ -26998,6 +27445,7 @@ interface SVGAnimatedEnumeration {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SVGAnimatedEnumeration/baseVal)
      */
     baseVal: number;
+    readonly [Symbol.toStringTag]: "SVGAnimatedEnumeration";
 }
 
 declare var SVGAnimatedEnumeration: {
@@ -27023,6 +27471,7 @@ interface SVGAnimatedInteger {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SVGAnimatedInteger/baseVal)
      */
     baseVal: number;
+    readonly [Symbol.toStringTag]: "SVGAnimatedInteger";
 }
 
 declare var SVGAnimatedInteger: {
@@ -27048,6 +27497,7 @@ interface SVGAnimatedLength {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SVGAnimatedLength/baseVal)
      */
     readonly baseVal: SVGLength;
+    readonly [Symbol.toStringTag]: "SVGAnimatedLength";
 }
 
 declare var SVGAnimatedLength: {
@@ -27073,6 +27523,7 @@ interface SVGAnimatedLengthList {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SVGAnimatedLengthList/baseVal)
      */
     readonly baseVal: SVGLengthList;
+    readonly [Symbol.toStringTag]: "SVGAnimatedLengthList";
 }
 
 declare var SVGAnimatedLengthList: {
@@ -27098,6 +27549,7 @@ interface SVGAnimatedNumber {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SVGAnimatedNumber/baseVal)
      */
     baseVal: number;
+    readonly [Symbol.toStringTag]: "SVGAnimatedNumber";
 }
 
 declare var SVGAnimatedNumber: {
@@ -27123,6 +27575,7 @@ interface SVGAnimatedNumberList {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SVGAnimatedNumberList/baseVal)
      */
     readonly baseVal: SVGNumberList;
+    readonly [Symbol.toStringTag]: "SVGAnimatedNumberList";
 }
 
 declare var SVGAnimatedNumberList: {
@@ -27155,6 +27608,7 @@ interface SVGAnimatedPreserveAspectRatio {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SVGAnimatedPreserveAspectRatio/baseVal)
      */
     readonly baseVal: SVGPreserveAspectRatio;
+    readonly [Symbol.toStringTag]: "SVGAnimatedPreserveAspectRatio";
 }
 
 declare var SVGAnimatedPreserveAspectRatio: {
@@ -27180,6 +27634,7 @@ interface SVGAnimatedRect {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SVGAnimatedRect/baseVal)
      */
     readonly baseVal: DOMRect;
+    readonly [Symbol.toStringTag]: "SVGAnimatedRect";
 }
 
 declare var SVGAnimatedRect: {
@@ -27205,6 +27660,7 @@ interface SVGAnimatedString {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SVGAnimatedString/baseVal)
      */
     baseVal: string;
+    readonly [Symbol.toStringTag]: "SVGAnimatedString";
 }
 
 declare var SVGAnimatedString: {
@@ -27230,6 +27686,7 @@ interface SVGAnimatedTransformList {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SVGAnimatedTransformList/baseVal)
      */
     readonly baseVal: SVGTransformList;
+    readonly [Symbol.toStringTag]: "SVGAnimatedTransformList";
 }
 
 declare var SVGAnimatedTransformList: {
@@ -27295,6 +27752,7 @@ interface SVGAnimationElement extends SVGElement, SVGTests {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGAnimationElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var SVGAnimationElement: {
@@ -27330,6 +27788,7 @@ interface SVGCircleElement extends SVGGeometryElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGCircleElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGCircleElement";
 }
 
 declare var SVGCircleElement: {
@@ -27359,6 +27818,7 @@ interface SVGClipPathElement extends SVGElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGClipPathElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGClipPathElement";
 }
 
 declare var SVGClipPathElement: {
@@ -27424,6 +27884,7 @@ interface SVGComponentTransferFunctionElement extends SVGElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGComponentTransferFunctionElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var SVGComponentTransferFunctionElement: {
@@ -27447,6 +27908,7 @@ interface SVGDefsElement extends SVGGraphicsElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGDefsElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGDefsElement";
 }
 
 declare var SVGDefsElement: {
@@ -27464,6 +27926,7 @@ interface SVGDescElement extends SVGElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGDescElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGDescElement";
 }
 
 declare var SVGDescElement: {
@@ -27498,6 +27961,7 @@ interface SVGElement extends Element, ElementCSSInlineStyle, GlobalEventHandlers
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var SVGElement: {
@@ -27539,6 +28003,7 @@ interface SVGEllipseElement extends SVGGeometryElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGEllipseElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGEllipseElement";
 }
 
 declare var SVGEllipseElement: {
@@ -27591,6 +28056,7 @@ interface SVGFEBlendElement extends SVGElement, SVGFilterPrimitiveStandardAttrib
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEBlendElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEBlendElement";
 }
 
 declare var SVGFEBlendElement: {
@@ -27648,6 +28114,7 @@ interface SVGFEColorMatrixElement extends SVGElement, SVGFilterPrimitiveStandard
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEColorMatrixElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEColorMatrixElement";
 }
 
 declare var SVGFEColorMatrixElement: {
@@ -27676,6 +28143,7 @@ interface SVGFEComponentTransferElement extends SVGElement, SVGFilterPrimitiveSt
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEComponentTransferElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEComponentTransferElement";
 }
 
 declare var SVGFEComponentTransferElement: {
@@ -27742,6 +28210,7 @@ interface SVGFECompositeElement extends SVGElement, SVGFilterPrimitiveStandardAt
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFECompositeElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFECompositeElement";
 }
 
 declare var SVGFECompositeElement: {
@@ -27842,6 +28311,7 @@ interface SVGFEConvolveMatrixElement extends SVGElement, SVGFilterPrimitiveStand
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEConvolveMatrixElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEConvolveMatrixElement";
 }
 
 declare var SVGFEConvolveMatrixElement: {
@@ -27893,6 +28363,7 @@ interface SVGFEDiffuseLightingElement extends SVGElement, SVGFilterPrimitiveStan
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEDiffuseLightingElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEDiffuseLightingElement";
 }
 
 declare var SVGFEDiffuseLightingElement: {
@@ -27945,6 +28416,7 @@ interface SVGFEDisplacementMapElement extends SVGElement, SVGFilterPrimitiveStan
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEDisplacementMapElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEDisplacementMapElement";
 }
 
 declare var SVGFEDisplacementMapElement: {
@@ -27979,6 +28451,7 @@ interface SVGFEDistantLightElement extends SVGElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEDistantLightElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEDistantLightElement";
 }
 
 declare var SVGFEDistantLightElement: {
@@ -28032,6 +28505,7 @@ interface SVGFEDropShadowElement extends SVGElement, SVGFilterPrimitiveStandardA
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEDropShadowElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEDropShadowElement";
 }
 
 declare var SVGFEDropShadowElement: {
@@ -28049,6 +28523,7 @@ interface SVGFEFloodElement extends SVGElement, SVGFilterPrimitiveStandardAttrib
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEFloodElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEFloodElement";
 }
 
 declare var SVGFEFloodElement: {
@@ -28066,6 +28541,7 @@ interface SVGFEFuncAElement extends SVGComponentTransferFunctionElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEFuncAElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEFuncAElement";
 }
 
 declare var SVGFEFuncAElement: {
@@ -28083,6 +28559,7 @@ interface SVGFEFuncBElement extends SVGComponentTransferFunctionElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEFuncBElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEFuncBElement";
 }
 
 declare var SVGFEFuncBElement: {
@@ -28100,6 +28577,7 @@ interface SVGFEFuncGElement extends SVGComponentTransferFunctionElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEFuncGElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEFuncGElement";
 }
 
 declare var SVGFEFuncGElement: {
@@ -28117,6 +28595,7 @@ interface SVGFEFuncRElement extends SVGComponentTransferFunctionElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEFuncRElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEFuncRElement";
 }
 
 declare var SVGFEFuncRElement: {
@@ -28158,6 +28637,7 @@ interface SVGFEGaussianBlurElement extends SVGElement, SVGFilterPrimitiveStandar
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEGaussianBlurElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEGaussianBlurElement";
 }
 
 declare var SVGFEGaussianBlurElement: {
@@ -28181,6 +28661,7 @@ interface SVGFEImageElement extends SVGElement, SVGFilterPrimitiveStandardAttrib
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEImageElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEImageElement";
 }
 
 declare var SVGFEImageElement: {
@@ -28198,6 +28679,7 @@ interface SVGFEMergeElement extends SVGElement, SVGFilterPrimitiveStandardAttrib
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEMergeElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEMergeElement";
 }
 
 declare var SVGFEMergeElement: {
@@ -28221,6 +28703,7 @@ interface SVGFEMergeNodeElement extends SVGElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEMergeNodeElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEMergeNodeElement";
 }
 
 declare var SVGFEMergeNodeElement: {
@@ -28265,6 +28748,7 @@ interface SVGFEMorphologyElement extends SVGElement, SVGFilterPrimitiveStandardA
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEMorphologyElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEMorphologyElement";
 }
 
 declare var SVGFEMorphologyElement: {
@@ -28303,6 +28787,7 @@ interface SVGFEOffsetElement extends SVGElement, SVGFilterPrimitiveStandardAttri
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEOffsetElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEOffsetElement";
 }
 
 declare var SVGFEOffsetElement: {
@@ -28338,6 +28823,7 @@ interface SVGFEPointLightElement extends SVGElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFEPointLightElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFEPointLightElement";
 }
 
 declare var SVGFEPointLightElement: {
@@ -28391,6 +28877,7 @@ interface SVGFESpecularLightingElement extends SVGElement, SVGFilterPrimitiveSta
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFESpecularLightingElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFESpecularLightingElement";
 }
 
 declare var SVGFESpecularLightingElement: {
@@ -28456,6 +28943,7 @@ interface SVGFESpotLightElement extends SVGElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFESpotLightElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFESpotLightElement";
 }
 
 declare var SVGFESpotLightElement: {
@@ -28479,6 +28967,7 @@ interface SVGFETileElement extends SVGElement, SVGFilterPrimitiveStandardAttribu
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFETileElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFETileElement";
 }
 
 declare var SVGFETileElement: {
@@ -28538,6 +29027,7 @@ interface SVGFETurbulenceElement extends SVGElement, SVGFilterPrimitiveStandardA
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFETurbulenceElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFETurbulenceElement";
 }
 
 declare var SVGFETurbulenceElement: {
@@ -28597,6 +29087,7 @@ interface SVGFilterElement extends SVGElement, SVGURIReference {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGFilterElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGFilterElement";
 }
 
 declare var SVGFilterElement: {
@@ -28658,6 +29149,7 @@ interface SVGForeignObjectElement extends SVGGraphicsElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGForeignObjectElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGForeignObjectElement";
 }
 
 declare var SVGForeignObjectElement: {
@@ -28675,6 +29167,7 @@ interface SVGGElement extends SVGGraphicsElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGGElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGGElement";
 }
 
 declare var SVGGElement: {
@@ -28722,6 +29215,7 @@ interface SVGGeometryElement extends SVGGraphicsElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGGeometryElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var SVGGeometryElement: {
@@ -28761,6 +29255,7 @@ interface SVGGradientElement extends SVGElement, SVGURIReference {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGGradientElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var SVGGradientElement: {
@@ -28806,6 +29301,7 @@ interface SVGGraphicsElement extends SVGElement, SVGTests {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGGraphicsElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var SVGGraphicsElement: {
@@ -28859,6 +29355,7 @@ interface SVGImageElement extends SVGGraphicsElement, SVGURIReference {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGImageElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGImageElement";
 }
 
 declare var SVGImageElement: {
@@ -28919,6 +29416,7 @@ interface SVGLength {
     readonly SVG_LENGTHTYPE_IN: 8;
     readonly SVG_LENGTHTYPE_PT: 9;
     readonly SVG_LENGTHTYPE_PC: 10;
+    readonly [Symbol.toStringTag]: "SVGLength";
 }
 
 declare var SVGLength: {
@@ -28998,6 +29496,7 @@ interface SVGLengthList {
      */
     replaceItem(newItem: SVGLength, index: number): SVGLength;
     [index: number]: SVGLength;
+    readonly [Symbol.toStringTag]: "SVGLengthList";
 }
 
 declare var SVGLengthList: {
@@ -29039,6 +29538,7 @@ interface SVGLineElement extends SVGGeometryElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGLineElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGLineElement";
 }
 
 declare var SVGLineElement: {
@@ -29080,6 +29580,7 @@ interface SVGLinearGradientElement extends SVGGradientElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGLinearGradientElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGLinearGradientElement";
 }
 
 declare var SVGLinearGradientElement: {
@@ -29097,6 +29598,7 @@ interface SVGMPathElement extends SVGElement, SVGURIReference {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGMPathElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGMPathElement";
 }
 
 declare var SVGMPathElement: {
@@ -29175,6 +29677,7 @@ interface SVGMarkerElement extends SVGElement, SVGFitToViewBox {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGMarkerElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGMarkerElement";
 }
 
 declare var SVGMarkerElement: {
@@ -29235,6 +29738,7 @@ interface SVGMaskElement extends SVGElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGMaskElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGMaskElement";
 }
 
 declare var SVGMaskElement: {
@@ -29252,6 +29756,7 @@ interface SVGMetadataElement extends SVGElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGMetadataElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGMetadataElement";
 }
 
 declare var SVGMetadataElement: {
@@ -29271,6 +29776,7 @@ interface SVGNumber {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SVGNumber/value)
      */
     value: number;
+    readonly [Symbol.toStringTag]: "SVGNumber";
 }
 
 declare var SVGNumber: {
@@ -29339,6 +29845,7 @@ interface SVGNumberList {
      */
     replaceItem(newItem: SVGNumber, index: number): SVGNumber;
     [index: number]: SVGNumber;
+    readonly [Symbol.toStringTag]: "SVGNumberList";
 }
 
 declare var SVGNumberList: {
@@ -29374,6 +29881,7 @@ interface SVGPathElement extends SVGGeometryElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGPathElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGPathElement";
 }
 
 declare var SVGPathElement: {
@@ -29433,6 +29941,7 @@ interface SVGPatternElement extends SVGElement, SVGFitToViewBox, SVGURIReference
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGPatternElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGPatternElement";
 }
 
 declare var SVGPatternElement: {
@@ -29501,6 +30010,7 @@ interface SVGPointList {
      */
     replaceItem(newItem: DOMPoint, index: number): DOMPoint;
     [index: number]: DOMPoint;
+    readonly [Symbol.toStringTag]: "SVGPointList";
 }
 
 declare var SVGPointList: {
@@ -29518,6 +30028,7 @@ interface SVGPolygonElement extends SVGGeometryElement, SVGAnimatedPoints {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGPolygonElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGPolygonElement";
 }
 
 declare var SVGPolygonElement: {
@@ -29535,6 +30046,7 @@ interface SVGPolylineElement extends SVGGeometryElement, SVGAnimatedPoints {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGPolylineElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGPolylineElement";
 }
 
 declare var SVGPolylineElement: {
@@ -29574,6 +30086,7 @@ interface SVGPreserveAspectRatio {
     readonly SVG_MEETORSLICE_UNKNOWN: 0;
     readonly SVG_MEETORSLICE_MEET: 1;
     readonly SVG_MEETORSLICE_SLICE: 2;
+    readonly [Symbol.toStringTag]: "SVGPreserveAspectRatio";
 }
 
 declare var SVGPreserveAspectRatio: {
@@ -29641,6 +30154,7 @@ interface SVGRadialGradientElement extends SVGGradientElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGRadialGradientElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGRadialGradientElement";
 }
 
 declare var SVGRadialGradientElement: {
@@ -29694,6 +30208,7 @@ interface SVGRectElement extends SVGGeometryElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGRectElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGRectElement";
 }
 
 declare var SVGRectElement: {
@@ -29862,6 +30377,7 @@ interface SVGSVGElement extends SVGGraphicsElement, SVGFitToViewBox, WindowEvent
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGSVGElementEventMap>(type: K, listener: (this: SVGSVGElement, ev: SVGSVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGSVGElement";
 }
 
 declare var SVGSVGElement: {
@@ -29885,6 +30401,7 @@ interface SVGScriptElement extends SVGElement, SVGURIReference {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGScriptElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGScriptElement";
 }
 
 declare var SVGScriptElement: {
@@ -29902,6 +30419,7 @@ interface SVGSetElement extends SVGAnimationElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGSetElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGSetElement";
 }
 
 declare var SVGSetElement: {
@@ -29925,6 +30443,7 @@ interface SVGStopElement extends SVGElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGStopElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGStopElement";
 }
 
 declare var SVGStopElement: {
@@ -29993,6 +30512,7 @@ interface SVGStringList {
      */
     replaceItem(newItem: string, index: number): string;
     [index: number]: string;
+    readonly [Symbol.toStringTag]: "SVGStringList";
 }
 
 declare var SVGStringList: {
@@ -30035,6 +30555,7 @@ interface SVGStyleElement extends SVGElement, LinkStyle {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGStyleElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGStyleElement";
 }
 
 declare var SVGStyleElement: {
@@ -30052,6 +30573,7 @@ interface SVGSwitchElement extends SVGGraphicsElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGSwitchElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGSwitchElement";
 }
 
 declare var SVGSwitchElement: {
@@ -30069,6 +30591,7 @@ interface SVGSymbolElement extends SVGElement, SVGFitToViewBox {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGSymbolElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGSymbolElement";
 }
 
 declare var SVGSymbolElement: {
@@ -30086,6 +30609,7 @@ interface SVGTSpanElement extends SVGTextPositioningElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGTSpanElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGTSpanElement";
 }
 
 declare var SVGTSpanElement: {
@@ -30175,6 +30699,7 @@ interface SVGTextContentElement extends SVGGraphicsElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGTextContentElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var SVGTextContentElement: {
@@ -30195,6 +30720,7 @@ interface SVGTextElement extends SVGTextPositioningElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGTextElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGTextElement";
 }
 
 declare var SVGTextElement: {
@@ -30236,6 +30762,7 @@ interface SVGTextPathElement extends SVGTextContentElement, SVGURIReference {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGTextPathElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGTextPathElement";
 }
 
 declare var SVGTextPathElement: {
@@ -30289,6 +30816,7 @@ interface SVGTextPositioningElement extends SVGTextContentElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGTextPositioningElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var SVGTextPositioningElement: {
@@ -30306,6 +30834,7 @@ interface SVGTitleElement extends SVGElement {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGTitleElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGTitleElement";
 }
 
 declare var SVGTitleElement: {
@@ -30380,6 +30909,7 @@ interface SVGTransform {
     readonly SVG_TRANSFORM_ROTATE: 4;
     readonly SVG_TRANSFORM_SKEWX: 5;
     readonly SVG_TRANSFORM_SKEWY: 6;
+    readonly [Symbol.toStringTag]: "SVGTransform";
 }
 
 declare var SVGTransform: {
@@ -30467,6 +30997,7 @@ interface SVGTransformList {
      */
     replaceItem(newItem: SVGTransform, index: number): SVGTransform;
     [index: number]: SVGTransform;
+    readonly [Symbol.toStringTag]: "SVGTransformList";
 }
 
 declare var SVGTransformList: {
@@ -30488,6 +31019,7 @@ interface SVGUnitTypes {
     readonly SVG_UNIT_TYPE_UNKNOWN: 0;
     readonly SVG_UNIT_TYPE_USERSPACEONUSE: 1;
     readonly SVG_UNIT_TYPE_OBJECTBOUNDINGBOX: 2;
+    readonly [Symbol.toStringTag]: "SVGUnitTypes";
 }
 
 declare var SVGUnitTypes: {
@@ -30532,6 +31064,7 @@ interface SVGUseElement extends SVGGraphicsElement, SVGURIReference {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGUseElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGUseElement";
 }
 
 declare var SVGUseElement: {
@@ -30549,6 +31082,7 @@ interface SVGViewElement extends SVGElement, SVGFitToViewBox {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SVGElementEventMap>(type: K, listener: (this: SVGViewElement, ev: SVGElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SVGViewElement";
 }
 
 declare var SVGViewElement: {
@@ -30574,6 +31108,7 @@ interface Scheduler {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Scheduler/yield)
      */
     yield(): Promise<void>;
+    readonly [Symbol.toStringTag]: "Scheduler";
 }
 
 declare var Scheduler: {
@@ -30629,6 +31164,7 @@ interface Screen {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Screen/width)
      */
     readonly width: number;
+    readonly [Symbol.toStringTag]: "Screen";
 }
 
 declare var Screen: {
@@ -30676,6 +31212,7 @@ interface ScreenOrientation extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ScreenOrientationEventMap>(type: K, listener: (this: ScreenOrientation, ev: ScreenOrientationEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ScreenOrientation";
 }
 
 declare var ScreenOrientation: {
@@ -30711,6 +31248,7 @@ interface ScriptProcessorNode extends AudioNode {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ScriptProcessorNodeEventMap>(type: K, listener: (this: ScriptProcessorNode, ev: ScriptProcessorNodeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ScriptProcessorNode";
 }
 
 /** @deprecated */
@@ -30737,6 +31275,7 @@ interface ScrollTimeline extends AnimationTimeline {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ScrollTimeline/source)
      */
     readonly source: Element | null;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var ScrollTimeline: {
@@ -30822,6 +31361,7 @@ interface SecurityPolicyViolationEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SecurityPolicyViolationEvent/violatedDirective)
      */
     readonly violatedDirective: string;
+    readonly [Symbol.toStringTag]: "SecurityPolicyViolationEvent";
 }
 
 declare var SecurityPolicyViolationEvent: {
@@ -30980,6 +31520,7 @@ interface Selection {
      */
     setPosition(node: Node | null, offset?: number): void;
     toString(): string;
+    readonly [Symbol.toStringTag]: "Selection";
 }
 
 declare var Selection: {
@@ -31023,6 +31564,7 @@ interface ServiceWorker extends EventTarget, AbstractWorker {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ServiceWorkerEventMap>(type: K, listener: (this: ServiceWorker, ev: ServiceWorkerEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ServiceWorker";
 }
 
 declare var ServiceWorker: {
@@ -31089,6 +31631,7 @@ interface ServiceWorkerContainer extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ServiceWorkerContainerEventMap>(type: K, listener: (this: ServiceWorkerContainer, ev: ServiceWorkerContainerEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ServiceWorkerContainer";
 }
 
 declare var ServiceWorkerContainer: {
@@ -31179,6 +31722,7 @@ interface ServiceWorkerRegistration extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ServiceWorkerRegistrationEventMap>(type: K, listener: (this: ServiceWorkerRegistration, ev: ServiceWorkerRegistrationEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ServiceWorkerRegistration";
 }
 
 declare var ServiceWorkerRegistration: {
@@ -31255,6 +31799,7 @@ interface ShadowRoot extends DocumentFragment, DocumentOrShadowRoot {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ShadowRootEventMap>(type: K, listener: (this: ShadowRoot, ev: ShadowRootEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ShadowRoot";
 }
 
 declare var ShadowRoot: {
@@ -31278,6 +31823,7 @@ interface SharedWorker extends EventTarget, AbstractWorker {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AbstractWorkerEventMap>(type: K, listener: (this: SharedWorker, ev: AbstractWorkerEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SharedWorker";
 }
 
 declare var SharedWorker: {
@@ -31378,6 +31924,7 @@ interface SourceBuffer extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SourceBufferEventMap>(type: K, listener: (this: SourceBuffer, ev: SourceBufferEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SourceBuffer";
 }
 
 declare var SourceBuffer: {
@@ -31409,6 +31956,7 @@ interface SourceBufferList extends EventTarget {
     removeEventListener<K extends keyof SourceBufferListEventMap>(type: K, listener: (this: SourceBufferList, ev: SourceBufferListEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
     [index: number]: SourceBuffer;
+    readonly [Symbol.toStringTag]: "SourceBufferList";
 }
 
 declare var SourceBufferList: {
@@ -31435,6 +31983,7 @@ interface SpeechRecognitionAlternative {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SpeechRecognitionAlternative/transcript)
      */
     readonly transcript: string;
+    readonly [Symbol.toStringTag]: "SpeechRecognitionAlternative";
 }
 
 declare var SpeechRecognitionAlternative: {
@@ -31461,6 +32010,7 @@ interface SpeechRecognitionErrorEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SpeechRecognitionErrorEvent/message)
      */
     readonly message: string;
+    readonly [Symbol.toStringTag]: "SpeechRecognitionErrorEvent";
 }
 
 declare var SpeechRecognitionErrorEvent: {
@@ -31487,6 +32037,7 @@ interface SpeechRecognitionEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SpeechRecognitionEvent/results)
      */
     readonly results: SpeechRecognitionResultList;
+    readonly [Symbol.toStringTag]: "SpeechRecognitionEvent";
 }
 
 declare var SpeechRecognitionEvent: {
@@ -31520,6 +32071,7 @@ interface SpeechRecognitionResult {
      */
     item(index: number): SpeechRecognitionAlternative;
     [index: number]: SpeechRecognitionAlternative;
+    readonly [Symbol.toStringTag]: "SpeechRecognitionResult";
 }
 
 declare var SpeechRecognitionResult: {
@@ -31547,6 +32099,7 @@ interface SpeechRecognitionResultList {
      */
     item(index: number): SpeechRecognitionResult;
     [index: number]: SpeechRecognitionResult;
+    readonly [Symbol.toStringTag]: "SpeechRecognitionResultList";
 }
 
 declare var SpeechRecognitionResultList: {
@@ -31618,6 +32171,7 @@ interface SpeechSynthesis extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SpeechSynthesisEventMap>(type: K, listener: (this: SpeechSynthesis, ev: SpeechSynthesisEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SpeechSynthesis";
 }
 
 declare var SpeechSynthesis: {
@@ -31637,6 +32191,7 @@ interface SpeechSynthesisErrorEvent extends SpeechSynthesisEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SpeechSynthesisErrorEvent/error)
      */
     readonly error: SpeechSynthesisErrorCode;
+    readonly [Symbol.toStringTag]: "SpeechSynthesisErrorEvent";
 }
 
 declare var SpeechSynthesisErrorEvent: {
@@ -31680,6 +32235,7 @@ interface SpeechSynthesisEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SpeechSynthesisEvent/utterance)
      */
     readonly utterance: SpeechSynthesisUtterance;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var SpeechSynthesisEvent: {
@@ -31757,6 +32313,7 @@ interface SpeechSynthesisUtterance extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SpeechSynthesisUtteranceEventMap>(type: K, listener: (this: SpeechSynthesisUtterance, ev: SpeechSynthesisUtteranceEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SpeechSynthesisUtterance";
 }
 
 declare var SpeechSynthesisUtterance: {
@@ -31800,6 +32357,7 @@ interface SpeechSynthesisVoice {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SpeechSynthesisVoice/voiceURI)
      */
     readonly voiceURI: string;
+    readonly [Symbol.toStringTag]: "SpeechSynthesisVoice";
 }
 
 declare var SpeechSynthesisVoice: {
@@ -31813,6 +32371,7 @@ declare var SpeechSynthesisVoice: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/StaticRange)
  */
 interface StaticRange extends AbstractRange {
+    readonly [Symbol.toStringTag]: "StaticRange";
 }
 
 declare var StaticRange: {
@@ -31832,6 +32391,7 @@ interface StereoPannerNode extends AudioNode {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/StereoPannerNode/pan)
      */
     readonly pan: AudioParam;
+    readonly [Symbol.toStringTag]: "StereoPannerNode";
 }
 
 declare var StereoPannerNode: {
@@ -31882,6 +32442,7 @@ interface Storage {
      */
     setItem(key: string, value: string): void;
     [name: string]: any;
+    readonly [Symbol.toStringTag]: "Storage";
 }
 
 declare var Storage: {
@@ -31932,6 +32493,7 @@ interface StorageEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/StorageEvent/initStorageEvent)
      */
     initStorageEvent(type: string, bubbles?: boolean, cancelable?: boolean, key?: string | null, oldValue?: string | null, newValue?: string | null, url?: string | URL, storageArea?: Storage | null): void;
+    readonly [Symbol.toStringTag]: "StorageEvent";
 }
 
 declare var StorageEvent: {
@@ -31970,6 +32532,7 @@ interface StorageManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/StorageManager/persisted)
      */
     persisted(): Promise<boolean>;
+    readonly [Symbol.toStringTag]: "StorageManager";
 }
 
 declare var StorageManager: {
@@ -32013,6 +32576,7 @@ interface StylePropertyMap extends StylePropertyMapReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/StylePropertyMap/set)
      */
     set(property: string, ...values: (CSSStyleValue | string)[]): void;
+    readonly [Symbol.toStringTag]: "StylePropertyMap";
 }
 
 declare var StylePropertyMap: {
@@ -32051,6 +32615,7 @@ interface StylePropertyMapReadOnly {
      */
     has(property: string): boolean;
     forEach(callbackfn: (value: CSSStyleValue[], key: string, parent: StylePropertyMapReadOnly) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var StylePropertyMapReadOnly: {
@@ -32107,6 +32672,7 @@ interface StyleSheet {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/StyleSheet/type)
      */
     readonly type: string;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var StyleSheet: {
@@ -32133,6 +32699,7 @@ interface StyleSheetList {
      */
     item(index: number): CSSStyleSheet | null;
     [index: number]: CSSStyleSheet;
+    readonly [Symbol.toStringTag]: "StyleSheetList";
 }
 
 declare var StyleSheetList: {
@@ -32152,6 +32719,7 @@ interface SubmitEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubmitEvent/submitter)
      */
     readonly submitter: HTMLElement | null;
+    readonly [Symbol.toStringTag]: "SubmitEvent";
 }
 
 declare var SubmitEvent: {
@@ -32244,6 +32812,7 @@ interface SubtleCrypto {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/wrapKey)
      */
     wrapKey(format: KeyFormat, key: CryptoKey, wrappingKey: CryptoKey, wrapAlgorithm: AlgorithmIdentifier | RsaOaepParams | AesCtrParams | AesCbcParams | AesGcmParams): Promise<ArrayBuffer>;
+    readonly [Symbol.toStringTag]: "SubtleCrypto";
 }
 
 declare var SubtleCrypto: {
@@ -32263,6 +32832,7 @@ interface TaskController extends AbortController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TaskController/setPriority)
      */
     setPriority(priority: TaskPriority): void;
+    readonly [Symbol.toStringTag]: "TaskController";
 }
 
 declare var TaskController: {
@@ -32282,6 +32852,7 @@ interface TaskPriorityChangeEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TaskPriorityChangeEvent/previousPriority)
      */
     readonly previousPriority: TaskPriority;
+    readonly [Symbol.toStringTag]: "TaskPriorityChangeEvent";
 }
 
 declare var TaskPriorityChangeEvent: {
@@ -32311,6 +32882,7 @@ interface TaskSignal extends AbortSignal {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof TaskSignalEventMap>(type: K, listener: (this: TaskSignal, ev: TaskSignalEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "TaskSignal";
 }
 
 declare var TaskSignal: {
@@ -32342,6 +32914,7 @@ interface Text extends CharacterData, Slottable {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Text/splitText)
      */
     splitText(offset: number): Text;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Text: {
@@ -32361,6 +32934,7 @@ interface TextDecoder extends TextDecoderCommon {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextDecoder/decode)
      */
     decode(input?: AllowSharedBufferSource, options?: TextDecodeOptions): string;
+    readonly [Symbol.toStringTag]: "TextDecoder";
 }
 
 declare var TextDecoder: {
@@ -32397,6 +32971,7 @@ interface TextDecoderCommon {
 interface TextDecoderStream extends GenericTransformStream, TextDecoderCommon {
     readonly readable: ReadableStream<string>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "TextDecoderStream";
 }
 
 declare var TextDecoderStream: {
@@ -32422,6 +32997,7 @@ interface TextEncoder extends TextEncoderCommon {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextEncoder/encodeInto)
      */
     encodeInto(source: string, destination: Uint8Array<ArrayBufferLike>): TextEncoderEncodeIntoResult;
+    readonly [Symbol.toStringTag]: "TextEncoder";
 }
 
 declare var TextEncoder: {
@@ -32446,6 +33022,7 @@ interface TextEncoderCommon {
 interface TextEncoderStream extends GenericTransformStream, TextEncoderCommon {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<string>;
+    readonly [Symbol.toStringTag]: "TextEncoderStream";
 }
 
 declare var TextEncoderStream: {
@@ -32474,6 +33051,7 @@ interface TextEvent extends UIEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextEvent/initTextEvent)
      */
     initTextEvent(type: string, bubbles?: boolean, cancelable?: boolean, view?: Window | null, data?: string): void;
+    readonly [Symbol.toStringTag]: "TextEvent";
 }
 
 /** @deprecated */
@@ -32560,6 +33138,7 @@ interface TextMetrics {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextMetrics/width)
      */
     readonly width: number;
+    readonly [Symbol.toStringTag]: "TextMetrics";
 }
 
 declare var TextMetrics: {
@@ -32643,6 +33222,7 @@ interface TextTrack extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof TextTrackEventMap>(type: K, listener: (this: TextTrack, ev: TextTrackEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "TextTrack";
 }
 
 declare var TextTrack: {
@@ -32699,6 +33279,7 @@ interface TextTrackCue extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof TextTrackCueEventMap>(type: K, listener: (this: TextTrackCue, ev: TextTrackCueEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var TextTrackCue: {
@@ -32725,6 +33306,7 @@ interface TextTrackCueList {
      */
     getCueById(id: string): TextTrackCue | null;
     [index: number]: TextTrackCue;
+    readonly [Symbol.toStringTag]: "TextTrackCueList";
 }
 
 declare var TextTrackCueList: {
@@ -32767,6 +33349,7 @@ interface TextTrackList extends EventTarget {
     removeEventListener<K extends keyof TextTrackListEventMap>(type: K, listener: (this: TextTrackList, ev: TextTrackListEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
     [index: number]: TextTrack;
+    readonly [Symbol.toStringTag]: "TextTrackList";
 }
 
 declare var TextTrackList: {
@@ -32798,6 +33381,7 @@ interface TimeRanges {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TimeRanges/start)
      */
     start(index: number): number;
+    readonly [Symbol.toStringTag]: "TimeRanges";
 }
 
 declare var TimeRanges: {
@@ -32829,6 +33413,7 @@ interface ToggleEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ToggleEvent/source)
      */
     readonly source: Element | null;
+    readonly [Symbol.toStringTag]: "ToggleEvent";
 }
 
 declare var ToggleEvent: {
@@ -32914,6 +33499,7 @@ interface Touch {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Touch/target)
      */
     readonly target: EventTarget;
+    readonly [Symbol.toStringTag]: "Touch";
 }
 
 declare var Touch: {
@@ -32969,6 +33555,7 @@ interface TouchEvent extends UIEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TouchEvent/touches)
      */
     readonly touches: TouchList;
+    readonly [Symbol.toStringTag]: "TouchEvent";
 }
 
 declare var TouchEvent: {
@@ -32995,6 +33582,7 @@ interface TouchList {
      */
     item(index: number): Touch | null;
     [index: number]: Touch;
+    readonly [Symbol.toStringTag]: "TouchList";
 }
 
 declare var TouchList: {
@@ -33014,6 +33602,7 @@ interface TrackEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TrackEvent/track)
      */
     readonly track: TextTrack | null;
+    readonly [Symbol.toStringTag]: "TrackEvent";
 }
 
 declare var TrackEvent: {
@@ -33039,6 +33628,7 @@ interface TransformStream<I = any, O = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TransformStream/writable)
      */
     readonly writable: WritableStream<I>;
+    readonly [Symbol.toStringTag]: "TransformStream";
 }
 
 declare var TransformStream: {
@@ -33076,6 +33666,7 @@ interface TransformStreamDefaultController<O = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TransformStreamDefaultController/terminate)
      */
     terminate(): void;
+    readonly [Symbol.toStringTag]: "TransformStreamDefaultController";
 }
 
 declare var TransformStreamDefaultController: {
@@ -33107,6 +33698,7 @@ interface TransitionEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TransitionEvent/pseudoElement)
      */
     readonly pseudoElement: string;
+    readonly [Symbol.toStringTag]: "TransitionEvent";
 }
 
 declare var TransitionEvent: {
@@ -33186,6 +33778,7 @@ interface TreeWalker {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TreeWalker/previousSibling)
      */
     previousSibling(): Node | null;
+    readonly [Symbol.toStringTag]: "TreeWalker";
 }
 
 declare var TreeWalker: {
@@ -33225,6 +33818,7 @@ interface UIEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/UIEvent/initUIEvent)
      */
     initUIEvent(typeArg: string, bubblesArg?: boolean, cancelableArg?: boolean, viewArg?: Window | null, detailArg?: number): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var UIEvent: {
@@ -33317,6 +33911,7 @@ interface URL {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/URL/toJSON)
      */
     toJSON(): string;
+    readonly [Symbol.toStringTag]: "URL";
 }
 
 declare var URL: {
@@ -33423,6 +34018,7 @@ interface URLPattern {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/URLPattern/test)
      */
     test(input?: URLPatternInput, baseURL?: string | URL): boolean;
+    readonly [Symbol.toStringTag]: "URLPattern";
 }
 
 declare var URLPattern: {
@@ -33487,6 +34083,7 @@ interface URLSearchParams {
     sort(): void;
     toString(): string;
     forEach(callbackfn: (value: string, key: string, parent: URLSearchParams) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "URLSearchParams";
 }
 
 declare var URLSearchParams: {
@@ -33512,6 +34109,7 @@ interface UserActivation {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/UserActivation/isActive)
      */
     readonly isActive: boolean;
+    readonly [Symbol.toStringTag]: "UserActivation";
 }
 
 declare var UserActivation: {
@@ -33595,6 +34193,7 @@ interface VTTCue extends TextTrackCue {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof TextTrackCueEventMap>(type: K, listener: (this: VTTCue, ev: TextTrackCueEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "VTTCue";
 }
 
 declare var VTTCue: {
@@ -33616,6 +34215,7 @@ interface VTTRegion {
     viewportAnchorX: number;
     viewportAnchorY: number;
     width: number;
+    readonly [Symbol.toStringTag]: "VTTRegion";
 }
 
 declare var VTTRegion: {
@@ -33695,6 +34295,7 @@ interface ValidityState {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ValidityState/valueMissing)
      */
     readonly valueMissing: boolean;
+    readonly [Symbol.toStringTag]: "ValidityState";
 }
 
 declare var ValidityState: {
@@ -33738,6 +34339,7 @@ interface VideoColorSpace {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/VideoColorSpace/toJSON)
      */
     toJSON(): VideoColorSpaceInit;
+    readonly [Symbol.toStringTag]: "VideoColorSpace";
 }
 
 declare var VideoColorSpace: {
@@ -33804,6 +34406,7 @@ interface VideoDecoder extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof VideoDecoderEventMap>(type: K, listener: (this: VideoDecoder, ev: VideoDecoderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "VideoDecoder";
 }
 
 declare var VideoDecoder: {
@@ -33876,6 +34479,7 @@ interface VideoEncoder extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof VideoEncoderEventMap>(type: K, listener: (this: VideoEncoder, ev: VideoEncoderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "VideoEncoder";
 }
 
 declare var VideoEncoder: {
@@ -33979,6 +34583,7 @@ interface VideoFrame {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/VideoFrame/copyTo)
      */
     copyTo(destination: AllowSharedBufferSource, options?: VideoFrameCopyToOptions): Promise<PlaneLayout[]>;
+    readonly [Symbol.toStringTag]: "VideoFrame";
 }
 
 declare var VideoFrame: {
@@ -34018,6 +34623,7 @@ interface VideoPlaybackQuality {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/VideoPlaybackQuality/totalVideoFrames)
      */
     readonly totalVideoFrames: number;
+    readonly [Symbol.toStringTag]: "VideoPlaybackQuality";
 }
 
 declare var VideoPlaybackQuality: {
@@ -34049,6 +34655,7 @@ interface ViewTimeline extends ScrollTimeline {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ViewTimeline/subject)
      */
     readonly subject: Element;
+    readonly [Symbol.toStringTag]: "ViewTimeline";
 }
 
 declare var ViewTimeline: {
@@ -34087,6 +34694,7 @@ interface ViewTransition {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ViewTransition/skipTransition)
      */
     skipTransition(): void;
+    readonly [Symbol.toStringTag]: "ViewTransition";
 }
 
 declare var ViewTransition: {
@@ -34096,6 +34704,7 @@ declare var ViewTransition: {
 
 interface ViewTransitionTypeSet {
     forEach(callbackfn: (value: string, key: string, parent: ViewTransitionTypeSet) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "ViewTransitionTypeSet";
 }
 
 declare var ViewTransitionTypeSet: {
@@ -34164,6 +34773,7 @@ interface VisualViewport extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof VisualViewportEventMap>(type: K, listener: (this: VisualViewport, ev: VisualViewportEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "VisualViewport";
 }
 
 declare var VisualViewport: {
@@ -34433,6 +35043,7 @@ interface WakeLock {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WakeLock/request)
      */
     request(type?: WakeLockType): Promise<WakeLockSentinel>;
+    readonly [Symbol.toStringTag]: "WakeLock";
 }
 
 declare var WakeLock: {
@@ -34475,6 +35086,7 @@ interface WakeLockSentinel extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof WakeLockSentinelEventMap>(type: K, listener: (this: WakeLockSentinel, ev: WakeLockSentinelEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "WakeLockSentinel";
 }
 
 declare var WakeLockSentinel: {
@@ -34500,6 +35112,7 @@ interface WaveShaperNode extends AudioNode {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WaveShaperNode/oversample)
      */
     oversample: OverSampleType;
+    readonly [Symbol.toStringTag]: "WaveShaperNode";
 }
 
 declare var WaveShaperNode: {
@@ -34513,6 +35126,7 @@ declare var WaveShaperNode: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext)
  */
 interface WebGL2RenderingContext extends WebGL2RenderingContextBase, WebGL2RenderingContextOverloads, WebGLRenderingContextBase {
+    readonly [Symbol.toStringTag]: "WebGL2RenderingContext";
 }
 
 declare var WebGL2RenderingContext: {
@@ -35605,6 +36219,7 @@ interface WebGLActiveInfo {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLActiveInfo/type)
      */
     readonly type: GLenum;
+    readonly [Symbol.toStringTag]: "WebGLActiveInfo";
 }
 
 declare var WebGLActiveInfo: {
@@ -35618,6 +36233,7 @@ declare var WebGLActiveInfo: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLBuffer)
  */
 interface WebGLBuffer {
+    readonly [Symbol.toStringTag]: "WebGLBuffer";
 }
 
 declare var WebGLBuffer: {
@@ -35637,6 +36253,7 @@ interface WebGLContextEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLContextEvent/statusMessage)
      */
     readonly statusMessage: string;
+    readonly [Symbol.toStringTag]: "WebGLContextEvent";
 }
 
 declare var WebGLContextEvent: {
@@ -35650,6 +36267,7 @@ declare var WebGLContextEvent: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLFramebuffer)
  */
 interface WebGLFramebuffer {
+    readonly [Symbol.toStringTag]: "WebGLFramebuffer";
 }
 
 declare var WebGLFramebuffer: {
@@ -35663,6 +36281,7 @@ declare var WebGLFramebuffer: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLProgram)
  */
 interface WebGLProgram {
+    readonly [Symbol.toStringTag]: "WebGLProgram";
 }
 
 declare var WebGLProgram: {
@@ -35676,6 +36295,7 @@ declare var WebGLProgram: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLQuery)
  */
 interface WebGLQuery {
+    readonly [Symbol.toStringTag]: "WebGLQuery";
 }
 
 declare var WebGLQuery: {
@@ -35689,6 +36309,7 @@ declare var WebGLQuery: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderbuffer)
  */
 interface WebGLRenderbuffer {
+    readonly [Symbol.toStringTag]: "WebGLRenderbuffer";
 }
 
 declare var WebGLRenderbuffer: {
@@ -35702,6 +36323,7 @@ declare var WebGLRenderbuffer: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext)
  */
 interface WebGLRenderingContext extends WebGLRenderingContextBase, WebGLRenderingContextOverloads {
+    readonly [Symbol.toStringTag]: "WebGLRenderingContext";
 }
 
 declare var WebGLRenderingContext: {
@@ -36634,6 +37256,7 @@ interface WebGLRenderingContextOverloads {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLSampler)
  */
 interface WebGLSampler {
+    readonly [Symbol.toStringTag]: "WebGLSampler";
 }
 
 declare var WebGLSampler: {
@@ -36647,6 +37270,7 @@ declare var WebGLSampler: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLShader)
  */
 interface WebGLShader {
+    readonly [Symbol.toStringTag]: "WebGLShader";
 }
 
 declare var WebGLShader: {
@@ -36678,6 +37302,7 @@ interface WebGLShaderPrecisionFormat {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLShaderPrecisionFormat/rangeMin)
      */
     readonly rangeMin: GLint;
+    readonly [Symbol.toStringTag]: "WebGLShaderPrecisionFormat";
 }
 
 declare var WebGLShaderPrecisionFormat: {
@@ -36691,6 +37316,7 @@ declare var WebGLShaderPrecisionFormat: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLSync)
  */
 interface WebGLSync {
+    readonly [Symbol.toStringTag]: "WebGLSync";
 }
 
 declare var WebGLSync: {
@@ -36704,6 +37330,7 @@ declare var WebGLSync: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLTexture)
  */
 interface WebGLTexture {
+    readonly [Symbol.toStringTag]: "WebGLTexture";
 }
 
 declare var WebGLTexture: {
@@ -36717,6 +37344,7 @@ declare var WebGLTexture: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLTransformFeedback)
  */
 interface WebGLTransformFeedback {
+    readonly [Symbol.toStringTag]: "WebGLTransformFeedback";
 }
 
 declare var WebGLTransformFeedback: {
@@ -36730,6 +37358,7 @@ declare var WebGLTransformFeedback: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLUniformLocation)
  */
 interface WebGLUniformLocation {
+    readonly [Symbol.toStringTag]: "WebGLUniformLocation";
 }
 
 declare var WebGLUniformLocation: {
@@ -36743,6 +37372,7 @@ declare var WebGLUniformLocation: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLVertexArrayObject)
  */
 interface WebGLVertexArrayObject {
+    readonly [Symbol.toStringTag]: "WebGLVertexArrayObject";
 }
 
 declare var WebGLVertexArrayObject: {
@@ -36831,6 +37461,7 @@ interface WebSocket extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof WebSocketEventMap>(type: K, listener: (this: WebSocket, ev: WebSocketEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "WebSocket";
 }
 
 declare var WebSocket: {
@@ -36897,6 +37528,7 @@ interface WebTransport {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransport/createUnidirectionalStream)
      */
     createUnidirectionalStream(options?: WebTransportSendStreamOptions): Promise<WritableStream>;
+    readonly [Symbol.toStringTag]: "WebTransport";
 }
 
 declare var WebTransport: {
@@ -36923,6 +37555,7 @@ interface WebTransportBidirectionalStream {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransportBidirectionalStream/writable)
      */
     readonly writable: WritableStream;
+    readonly [Symbol.toStringTag]: "WebTransportBidirectionalStream";
 }
 
 declare var WebTransportBidirectionalStream: {
@@ -36975,6 +37608,7 @@ interface WebTransportDatagramDuplexStream {
     readonly readable: ReadableStream;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransportDatagramDuplexStream/writable) */
     readonly writable: WritableStream;
+    readonly [Symbol.toStringTag]: "WebTransportDatagramDuplexStream";
 }
 
 declare var WebTransportDatagramDuplexStream: {
@@ -37001,6 +37635,7 @@ interface WebTransportError extends DOMException {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransportError/streamErrorCode)
      */
     readonly streamErrorCode: number | null;
+    readonly [Symbol.toStringTag]: "WebTransportError";
 }
 
 declare var WebTransportError: {
@@ -37041,6 +37676,7 @@ interface WheelEvent extends MouseEvent {
     readonly DOM_DELTA_PIXEL: 0x00;
     readonly DOM_DELTA_LINE: 0x01;
     readonly DOM_DELTA_PAGE: 0x02;
+    readonly [Symbol.toStringTag]: "WheelEvent";
 }
 
 declare var WheelEvent: {
@@ -37508,6 +38144,7 @@ interface Window extends EventTarget, AnimationFrameProvider, GlobalEventHandler
     removeEventListener<K extends keyof WindowEventMap>(type: K, listener: (this: Window, ev: WindowEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
     [index: number]: Window;
+    readonly [Symbol.toStringTag]: "Window";
 }
 
 declare var Window: {
@@ -37671,6 +38308,7 @@ interface Worker extends EventTarget, AbstractWorker, MessageEventTarget<Worker>
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof WorkerEventMap>(type: K, listener: (this: Worker, ev: WorkerEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "Worker";
 }
 
 declare var Worker: {
@@ -37691,6 +38329,7 @@ interface Worklet {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Worklet/addModule)
      */
     addModule(moduleURL: string | URL, options?: WorkletOptions): Promise<void>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Worklet: {
@@ -37728,6 +38367,7 @@ interface WritableStream<W = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStream/getWriter)
      */
     getWriter(): WritableStreamDefaultWriter<W>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var WritableStream: {
@@ -37753,6 +38393,7 @@ interface WritableStreamDefaultController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStreamDefaultController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "WritableStreamDefaultController";
 }
 
 declare var WritableStreamDefaultController: {
@@ -37808,6 +38449,7 @@ interface WritableStreamDefaultWriter<W = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStreamDefaultWriter/write)
      */
     write(chunk?: W): Promise<void>;
+    readonly [Symbol.toStringTag]: "WritableStreamDefaultWriter";
 }
 
 declare var WritableStreamDefaultWriter: {
@@ -37825,6 +38467,7 @@ interface XMLDocument extends Document {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof DocumentEventMap>(type: K, listener: (this: XMLDocument, ev: DocumentEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "XMLDocument";
 }
 
 declare var XMLDocument: {
@@ -37962,6 +38605,7 @@ interface XMLHttpRequest extends XMLHttpRequestEventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof XMLHttpRequestEventMap>(type: K, listener: (this: XMLHttpRequest, ev: XMLHttpRequestEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "XMLHttpRequest";
 }
 
 declare var XMLHttpRequest: {
@@ -38001,6 +38645,7 @@ interface XMLHttpRequestEventTarget extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof XMLHttpRequestEventTargetEventMap>(type: K, listener: (this: XMLHttpRequestEventTarget, ev: XMLHttpRequestEventTargetEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var XMLHttpRequestEventTarget: {
@@ -38018,6 +38663,7 @@ interface XMLHttpRequestUpload extends XMLHttpRequestEventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof XMLHttpRequestEventTargetEventMap>(type: K, listener: (this: XMLHttpRequestUpload, ev: XMLHttpRequestEventTargetEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "XMLHttpRequestUpload";
 }
 
 declare var XMLHttpRequestUpload: {
@@ -38037,6 +38683,7 @@ interface XMLSerializer {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/XMLSerializer/serializeToString)
      */
     serializeToString(root: Node): string;
+    readonly [Symbol.toStringTag]: "XMLSerializer";
 }
 
 declare var XMLSerializer: {
@@ -38050,6 +38697,7 @@ declare var XMLSerializer: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/XPathEvaluator)
  */
 interface XPathEvaluator extends XPathEvaluatorBase {
+    readonly [Symbol.toStringTag]: "XPathEvaluator";
 }
 
 declare var XPathEvaluator: {
@@ -38082,6 +38730,7 @@ interface XPathExpression {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/XPathExpression/evaluate)
      */
     evaluate(contextNode: Node, type?: number, result?: XPathResult | null): XPathResult;
+    readonly [Symbol.toStringTag]: "XPathExpression";
 }
 
 declare var XPathExpression: {
@@ -38159,6 +38808,7 @@ interface XPathResult {
     readonly ORDERED_NODE_SNAPSHOT_TYPE: 7;
     readonly ANY_UNORDERED_NODE_TYPE: 8;
     readonly FIRST_ORDERED_NODE_TYPE: 9;
+    readonly [Symbol.toStringTag]: "XPathResult";
 }
 
 declare var XPathResult: {
@@ -38230,6 +38880,7 @@ interface XSLTProcessor {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/XSLTProcessor/transformToFragment)
      */
     transformToFragment(source: Node, output: Document): DocumentFragment;
+    readonly [Symbol.toStringTag]: "XSLTProcessor";
 }
 
 declare var XSLTProcessor: {
@@ -38384,6 +39035,7 @@ declare namespace CSS {
 
 declare namespace WebAssembly {
     interface CompileError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.CompileError";
     }
 
     var CompileError: {
@@ -38416,6 +39068,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Exception/is)
          */
         is(exceptionTag: Tag): boolean;
+        readonly [Symbol.toStringTag]: "WebAssembly.Exception";
     }
 
     var Exception: {
@@ -38431,6 +39084,7 @@ declare namespace WebAssembly {
     interface Global<T extends ValueType = ValueType> {
         value: ValueTypeMap[T];
         valueOf(): ValueTypeMap[T];
+        readonly [Symbol.toStringTag]: "WebAssembly.Global";
     }
 
     var Global: {
@@ -38450,6 +39104,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Instance/exports)
          */
         readonly exports: Exports;
+        readonly [Symbol.toStringTag]: "WebAssembly.Instance";
     }
 
     var Instance: {
@@ -38458,6 +39113,7 @@ declare namespace WebAssembly {
     };
 
     interface LinkError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.LinkError";
     }
 
     var LinkError: {
@@ -38484,6 +39140,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Memory/grow)
          */
         grow(delta: AddressValue): AddressValue;
+        readonly [Symbol.toStringTag]: "WebAssembly.Memory";
     }
 
     var Memory: {
@@ -38497,6 +39154,7 @@ declare namespace WebAssembly {
      * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Module)
      */
     interface Module {
+        readonly [Symbol.toStringTag]: "WebAssembly.Module";
     }
 
     var Module: {
@@ -38523,6 +39181,7 @@ declare namespace WebAssembly {
     };
 
     interface RuntimeError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.RuntimeError";
     }
 
     var RuntimeError: {
@@ -38561,6 +39220,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Table/set)
          */
         set(index: AddressValue, value?: any): void;
+        readonly [Symbol.toStringTag]: "WebAssembly.Table";
     }
 
     var Table: {
@@ -38574,6 +39234,7 @@ declare namespace WebAssembly {
      * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Tag)
      */
     interface Tag {
+        readonly [Symbol.toStringTag]: "WebAssembly.Tag";
     }
 
     var Tag: {
@@ -40411,6 +41072,7 @@ interface FontFaceSet extends Set<FontFace> {
 
 interface FormDataIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): FormDataIterator<T>;
+    readonly [Symbol.toStringTag]: "FormData Iterator";
 }
 
 interface FormData {
@@ -40445,6 +41107,7 @@ interface HTMLSelectElement {
 
 interface HeadersIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): HeadersIterator<T>;
+    readonly [Symbol.toStringTag]: "Headers Iterator";
 }
 
 interface Headers {
@@ -40502,6 +41165,7 @@ interface MIDIOutputMap extends ReadonlyMap<string, MIDIOutput> {
 
 interface MediaKeyStatusMapIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): MediaKeyStatusMapIterator<T>;
+    readonly [Symbol.toStringTag]: "MediaKeyStatusMap Iterator";
 }
 
 interface MediaKeyStatusMap {
@@ -40618,6 +41282,7 @@ interface SpeechRecognitionResultList {
 
 interface StylePropertyMapReadOnlyIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): StylePropertyMapReadOnlyIterator<T>;
+    readonly [Symbol.toStringTag]: "StylePropertyMapReadOnly Iterator";
 }
 
 interface StylePropertyMapReadOnly {
@@ -40676,6 +41341,7 @@ interface TouchList {
 
 interface URLSearchParamsIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): URLSearchParamsIterator<T>;
+    readonly [Symbol.toStringTag]: "URLSearchParams Iterator";
 }
 
 interface URLSearchParams {
@@ -40840,6 +41506,7 @@ interface WebGLRenderingContextOverloads {
 
 interface FileSystemDirectoryHandleAsyncIterator<T> extends AsyncIteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.asyncIterator](): FileSystemDirectoryHandleAsyncIterator<T>;
+    readonly [Symbol.toStringTag]: "FileSystemDirectoryHandle AsyncIterator";
 }
 
 interface FileSystemDirectoryHandle {
@@ -40851,6 +41518,7 @@ interface FileSystemDirectoryHandle {
 
 interface ReadableStreamAsyncIterator<T> extends AsyncIteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.asyncIterator](): ReadableStreamAsyncIterator<T>;
+    readonly [Symbol.toStringTag]: "ReadableStream AsyncIterator";
 }
 
 interface ReadableStream<R = any> {
diff --git a/baselines/serviceworker.generated.d.ts b/baselines/serviceworker.generated.d.ts
index b96768a75..fde0eefee 100644
--- a/baselines/serviceworker.generated.d.ts
+++ b/baselines/serviceworker.generated.d.ts
@@ -920,6 +920,7 @@ interface AbortController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AbortController/abort)
      */
     abort(reason?: any): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AbortController: {
@@ -961,6 +962,7 @@ interface AbortSignal extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AbortSignalEventMap>(type: K, listener: (this: AbortSignal, ev: AbortSignalEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AbortSignal: {
@@ -1047,6 +1049,7 @@ interface Blob {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Blob/text)
      */
     text(): Promise<string>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Blob: {
@@ -1110,6 +1113,7 @@ interface BroadcastChannel extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof BroadcastChannelEventMap>(type: K, listener: (this: BroadcastChannel, ev: BroadcastChannelEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "BroadcastChannel";
 }
 
 declare var BroadcastChannel: {
@@ -1131,6 +1135,7 @@ interface ByteLengthQueuingStrategy extends QueuingStrategy<ArrayBufferView> {
     readonly highWaterMark: number;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/ByteLengthQueuingStrategy/size) */
     readonly size: QueuingStrategySize<ArrayBufferView>;
+    readonly [Symbol.toStringTag]: "ByteLengthQueuingStrategy";
 }
 
 declare var ByteLengthQueuingStrategy: {
@@ -1144,6 +1149,7 @@ declare var ByteLengthQueuingStrategy: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSImageValue)
  */
 interface CSSImageValue extends CSSStyleValue {
+    readonly [Symbol.toStringTag]: "CSSImageValue";
 }
 
 declare var CSSImageValue: {
@@ -1163,6 +1169,7 @@ interface CSSKeywordValue extends CSSStyleValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSKeywordValue/value)
      */
     value: string;
+    readonly [Symbol.toStringTag]: "CSSKeywordValue";
 }
 
 declare var CSSKeywordValue: {
@@ -1174,6 +1181,7 @@ interface CSSMathClamp extends CSSMathValue {
     readonly lower: CSSNumericValue;
     readonly upper: CSSNumericValue;
     readonly value: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSMathClamp";
 }
 
 declare var CSSMathClamp: {
@@ -1193,6 +1201,7 @@ interface CSSMathInvert extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathInvert/value)
      */
     readonly value: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSMathInvert";
 }
 
 declare var CSSMathInvert: {
@@ -1212,6 +1221,7 @@ interface CSSMathMax extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathMax/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathMax";
 }
 
 declare var CSSMathMax: {
@@ -1231,6 +1241,7 @@ interface CSSMathMin extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathMin/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathMin";
 }
 
 declare var CSSMathMin: {
@@ -1250,6 +1261,7 @@ interface CSSMathNegate extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathNegate/value)
      */
     readonly value: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSMathNegate";
 }
 
 declare var CSSMathNegate: {
@@ -1269,6 +1281,7 @@ interface CSSMathProduct extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathProduct/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathProduct";
 }
 
 declare var CSSMathProduct: {
@@ -1288,6 +1301,7 @@ interface CSSMathSum extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathSum/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathSum";
 }
 
 declare var CSSMathSum: {
@@ -1307,6 +1321,7 @@ interface CSSMathValue extends CSSNumericValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathValue/operator)
      */
     readonly operator: CSSMathOperator;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSMathValue: {
@@ -1326,6 +1341,7 @@ interface CSSMatrixComponent extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMatrixComponent/matrix)
      */
     matrix: DOMMatrix;
+    readonly [Symbol.toStringTag]: "CSSMatrixComponent";
 }
 
 declare var CSSMatrixComponent: {
@@ -1347,6 +1363,7 @@ interface CSSNumericArray {
     readonly length: number;
     forEach(callbackfn: (value: CSSNumericValue, key: number, parent: CSSNumericArray) => void, thisArg?: any): void;
     [index: number]: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSNumericArray";
 }
 
 declare var CSSNumericArray: {
@@ -1420,6 +1437,7 @@ interface CSSNumericValue extends CSSStyleValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSNumericValue/type)
      */
     type(): CSSNumericType;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSNumericValue: {
@@ -1439,6 +1457,7 @@ interface CSSPerspective extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSPerspective/length)
      */
     length: CSSPerspectiveValue;
+    readonly [Symbol.toStringTag]: "CSSPerspective";
 }
 
 declare var CSSPerspective: {
@@ -1476,6 +1495,7 @@ interface CSSRotate extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSRotate/z)
      */
     z: CSSNumberish;
+    readonly [Symbol.toStringTag]: "CSSRotate";
 }
 
 declare var CSSRotate: {
@@ -1508,6 +1528,7 @@ interface CSSScale extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSScale/z)
      */
     z: CSSNumberish;
+    readonly [Symbol.toStringTag]: "CSSScale";
 }
 
 declare var CSSScale: {
@@ -1533,6 +1554,7 @@ interface CSSSkew extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSSkew/ay)
      */
     ay: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSSkew";
 }
 
 declare var CSSSkew: {
@@ -1552,6 +1574,7 @@ interface CSSSkewX extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSSkewX/ax)
      */
     ax: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSSkewX";
 }
 
 declare var CSSSkewX: {
@@ -1571,6 +1594,7 @@ interface CSSSkewY extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSSkewY/ay)
      */
     ay: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSSkewY";
 }
 
 declare var CSSSkewY: {
@@ -1585,6 +1609,7 @@ declare var CSSSkewY: {
  */
 interface CSSStyleValue {
     toString(): string;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSStyleValue: {
@@ -1611,6 +1636,7 @@ interface CSSTransformComponent {
      */
     toMatrix(): DOMMatrix;
     toString(): string;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSTransformComponent: {
@@ -1644,6 +1670,7 @@ interface CSSTransformValue extends CSSStyleValue {
     toMatrix(): DOMMatrix;
     forEach(callbackfn: (value: CSSTransformComponent, key: number, parent: CSSTransformValue) => void, thisArg?: any): void;
     [index: number]: CSSTransformComponent;
+    readonly [Symbol.toStringTag]: "CSSTransformValue";
 }
 
 declare var CSSTransformValue: {
@@ -1675,6 +1702,7 @@ interface CSSTranslate extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSTranslate/z)
      */
     z: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSTranslate";
 }
 
 declare var CSSTranslate: {
@@ -1700,6 +1728,7 @@ interface CSSUnitValue extends CSSNumericValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSUnitValue/value)
      */
     value: number;
+    readonly [Symbol.toStringTag]: "CSSUnitValue";
 }
 
 declare var CSSUnitValue: {
@@ -1721,6 +1750,7 @@ interface CSSUnparsedValue extends CSSStyleValue {
     readonly length: number;
     forEach(callbackfn: (value: CSSUnparsedSegment, key: number, parent: CSSUnparsedValue) => void, thisArg?: any): void;
     [index: number]: CSSUnparsedSegment;
+    readonly [Symbol.toStringTag]: "CSSUnparsedValue";
 }
 
 declare var CSSUnparsedValue: {
@@ -1746,6 +1776,7 @@ interface CSSVariableReferenceValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSVariableReferenceValue/variable)
      */
     variable: string;
+    readonly [Symbol.toStringTag]: "CSSVariableReferenceValue";
 }
 
 declare var CSSVariableReferenceValue: {
@@ -1802,6 +1833,7 @@ interface Cache {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Cache/put)
      */
     put(request: RequestInfo | URL, response: Response): Promise<void>;
+    readonly [Symbol.toStringTag]: "Cache";
 }
 
 declare var Cache: {
@@ -1846,6 +1878,7 @@ interface CacheStorage {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CacheStorage/open)
      */
     open(cacheName: string): Promise<Cache>;
+    readonly [Symbol.toStringTag]: "CacheStorage";
 }
 
 declare var CacheStorage: {
@@ -1919,6 +1952,7 @@ interface CanvasGradient {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CanvasGradient/addColorStop)
      */
     addColorStop(offset: number, color: string): void;
+    readonly [Symbol.toStringTag]: "CanvasGradient";
 }
 
 declare var CanvasGradient: {
@@ -1996,6 +2030,7 @@ interface CanvasPattern {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CanvasPattern/setTransform)
      */
     setTransform(transform?: DOMMatrix2DInit): void;
+    readonly [Symbol.toStringTag]: "CanvasPattern";
 }
 
 declare var CanvasPattern: {
@@ -2121,6 +2156,7 @@ interface Client {
      */
     postMessage(message: any, transfer: Transferable[]): void;
     postMessage(message: any, options?: StructuredSerializeOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Client: {
@@ -2158,6 +2194,7 @@ interface Clients {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Clients/openWindow)
      */
     openWindow(url: string | URL): Promise<WindowClient | null>;
+    readonly [Symbol.toStringTag]: "Clients";
 }
 
 declare var Clients: {
@@ -2189,6 +2226,7 @@ interface CloseEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CloseEvent/wasClean)
      */
     readonly wasClean: boolean;
+    readonly [Symbol.toStringTag]: "CloseEvent";
 }
 
 declare var CloseEvent: {
@@ -2204,6 +2242,7 @@ declare var CloseEvent: {
 interface CompressionStream extends GenericTransformStream {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "CompressionStream";
 }
 
 declare var CompressionStream: {
@@ -2246,6 +2285,7 @@ interface CookieStore extends EventTarget {
      */
     set(name: string, value: string): Promise<void>;
     set(options: CookieInit): Promise<void>;
+    readonly [Symbol.toStringTag]: "CookieStore";
 }
 
 declare var CookieStore: {
@@ -2278,6 +2318,7 @@ interface CookieStoreManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CookieStoreManager/unsubscribe)
      */
     unsubscribe(subscriptions: CookieStoreGetOptions[]): Promise<void>;
+    readonly [Symbol.toStringTag]: "CookieStoreManager";
 }
 
 declare var CookieStoreManager: {
@@ -2299,6 +2340,7 @@ interface CountQueuingStrategy extends QueuingStrategy {
     readonly highWaterMark: number;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/CountQueuingStrategy/size) */
     readonly size: QueuingStrategySize;
+    readonly [Symbol.toStringTag]: "CountQueuingStrategy";
 }
 
 declare var CountQueuingStrategy: {
@@ -2332,6 +2374,7 @@ interface Crypto {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/randomUUID)
      */
     randomUUID(): `${string}-${string}-${string}-${string}-${string}`;
+    readonly [Symbol.toStringTag]: "Crypto";
 }
 
 declare var Crypto: {
@@ -2370,6 +2413,7 @@ interface CryptoKey {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CryptoKey/usages)
      */
     readonly usages: KeyUsage[];
+    readonly [Symbol.toStringTag]: "CryptoKey";
 }
 
 declare var CryptoKey: {
@@ -2396,6 +2440,7 @@ interface CustomEvent<T = any> extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CustomEvent/initCustomEvent)
      */
     initCustomEvent(type: string, bubbles?: boolean, cancelable?: boolean, detail?: T): void;
+    readonly [Symbol.toStringTag]: "CustomEvent";
 }
 
 declare var CustomEvent: {
@@ -2453,6 +2498,7 @@ interface DOMException extends Error {
     readonly TIMEOUT_ERR: 23;
     readonly INVALID_NODE_TYPE_ERR: 24;
     readonly DATA_CLONE_ERR: 25;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMException: {
@@ -2601,6 +2647,7 @@ interface DOMMatrix extends DOMMatrixReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMMatrix/translateSelf)
      */
     translateSelf(tx?: number, ty?: number, tz?: number): DOMMatrix;
+    readonly [Symbol.toStringTag]: "DOMMatrix";
 }
 
 declare var DOMMatrix: {
@@ -2771,6 +2818,7 @@ interface DOMMatrixReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMMatrixReadOnly/translate)
      */
     translate(tx?: number, ty?: number, tz?: number): DOMMatrix;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMMatrixReadOnly: {
@@ -2811,6 +2859,7 @@ interface DOMPoint extends DOMPointReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMPoint/z)
      */
     z: number;
+    readonly [Symbol.toStringTag]: "DOMPoint";
 }
 
 declare var DOMPoint: {
@@ -2866,6 +2915,7 @@ interface DOMPointReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMPointReadOnly/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMPointReadOnly: {
@@ -2921,6 +2971,7 @@ interface DOMQuad {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMQuad/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "DOMQuad";
 }
 
 declare var DOMQuad: {
@@ -2960,6 +3011,7 @@ interface DOMRect extends DOMRectReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMRect/y)
      */
     y: number;
+    readonly [Symbol.toStringTag]: "DOMRect";
 }
 
 declare var DOMRect: {
@@ -3033,6 +3085,7 @@ interface DOMRectReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMRectReadOnly/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMRectReadOnly: {
@@ -3071,6 +3124,7 @@ interface DOMStringList {
      */
     item(index: number): string | null;
     [index: number]: string;
+    readonly [Symbol.toStringTag]: "DOMStringList";
 }
 
 declare var DOMStringList: {
@@ -3086,6 +3140,7 @@ declare var DOMStringList: {
 interface DecompressionStream extends GenericTransformStream {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "DecompressionStream";
 }
 
 declare var DecompressionStream: {
@@ -3245,6 +3300,7 @@ interface ErrorEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ErrorEvent/message)
      */
     readonly message: string;
+    readonly [Symbol.toStringTag]: "ErrorEvent";
 }
 
 declare var ErrorEvent: {
@@ -3374,6 +3430,7 @@ interface Event {
     readonly CAPTURING_PHASE: 1;
     readonly AT_TARGET: 2;
     readonly BUBBLING_PHASE: 3;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Event: {
@@ -3444,6 +3501,7 @@ interface EventSource extends EventTarget {
     removeEventListener<K extends keyof EventSourceEventMap>(type: K, listener: (this: EventSource, ev: EventSourceEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: (this: EventSource, event: MessageEvent) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "EventSource";
 }
 
 declare var EventSource: {
@@ -3478,6 +3536,7 @@ interface EventTarget {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/EventTarget/removeEventListener)
      */
     removeEventListener(type: string, callback: EventListenerOrEventListenerObject | null, options?: EventListenerOptions | boolean): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var EventTarget: {
@@ -3503,6 +3562,7 @@ interface ExtendableCookieChangeEvent extends ExtendableEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ExtendableCookieChangeEvent/deleted)
      */
     readonly deleted: ReadonlyArray<CookieListItem>;
+    readonly [Symbol.toStringTag]: "ExtendableCookieChangeEvent";
 }
 
 declare var ExtendableCookieChangeEvent: {
@@ -3522,6 +3582,7 @@ interface ExtendableEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ExtendableEvent/waitUntil)
      */
     waitUntil(f: Promise<any>): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var ExtendableEvent: {
@@ -3565,6 +3626,7 @@ interface ExtendableMessageEvent extends ExtendableEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ExtendableMessageEvent/source)
      */
     readonly source: Client | ServiceWorker | MessagePort | null;
+    readonly [Symbol.toStringTag]: "ExtendableMessageEvent";
 }
 
 declare var ExtendableMessageEvent: {
@@ -3614,6 +3676,7 @@ interface FetchEvent extends ExtendableEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FetchEvent/respondWith)
      */
     respondWith(r: Response | PromiseLike<Response>): void;
+    readonly [Symbol.toStringTag]: "FetchEvent";
 }
 
 declare var FetchEvent: {
@@ -3645,6 +3708,7 @@ interface File extends Blob {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/File/webkitRelativePath)
      */
     readonly webkitRelativePath: string;
+    readonly [Symbol.toStringTag]: "File";
 }
 
 declare var File: {
@@ -3671,6 +3735,7 @@ interface FileList {
      */
     item(index: number): File | null;
     [index: number]: File;
+    readonly [Symbol.toStringTag]: "FileList";
 }
 
 declare var FileList: {
@@ -3761,6 +3826,7 @@ interface FileReader extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof FileReaderEventMap>(type: K, listener: (this: FileReader, ev: FileReaderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "FileReader";
 }
 
 declare var FileReader: {
@@ -3803,6 +3869,7 @@ interface FileSystemDirectoryHandle extends FileSystemHandle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemDirectoryHandle/resolve)
      */
     resolve(possibleDescendant: FileSystemHandle): Promise<string[] | null>;
+    readonly [Symbol.toStringTag]: "FileSystemDirectoryHandle";
 }
 
 declare var FileSystemDirectoryHandle: {
@@ -3830,6 +3897,7 @@ interface FileSystemFileHandle extends FileSystemHandle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemFileHandle/getFile)
      */
     getFile(): Promise<File>;
+    readonly [Symbol.toStringTag]: "FileSystemFileHandle";
 }
 
 declare var FileSystemFileHandle: {
@@ -3862,6 +3930,7 @@ interface FileSystemHandle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemHandle/isSameEntry)
      */
     isSameEntry(other: FileSystemHandle): Promise<boolean>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var FileSystemHandle: {
@@ -3894,6 +3963,7 @@ interface FileSystemWritableFileStream extends WritableStream {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemWritableFileStream/write)
      */
     write(data: FileSystemWriteChunkType): Promise<void>;
+    readonly [Symbol.toStringTag]: "FileSystemWritableFileStream";
 }
 
 declare var FileSystemWritableFileStream: {
@@ -3991,6 +4061,7 @@ interface FontFace {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FontFace/load)
      */
     load(): Promise<FontFace>;
+    readonly [Symbol.toStringTag]: "FontFace";
 }
 
 declare var FontFace: {
@@ -4045,6 +4116,7 @@ interface FontFaceSet extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof FontFaceSetEventMap>(type: K, listener: (this: FontFaceSet, ev: FontFaceSetEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "FontFaceSet";
 }
 
 declare var FontFaceSet: {
@@ -4064,6 +4136,7 @@ interface FontFaceSetLoadEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FontFaceSetLoadEvent/fontfaces)
      */
     readonly fontfaces: ReadonlyArray<FontFace>;
+    readonly [Symbol.toStringTag]: "FontFaceSetLoadEvent";
 }
 
 declare var FontFaceSetLoadEvent: {
@@ -4123,6 +4196,7 @@ interface FormData {
     set(name: string, value: string): void;
     set(name: string, blobValue: Blob, filename?: string): void;
     forEach(callbackfn: (value: FormDataEntryValue, key: string, parent: FormData) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "FormData";
 }
 
 declare var FormData: {
@@ -4143,6 +4217,7 @@ interface GPUError {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/GPUError/message)
      */
     readonly message: string;
+    readonly [Symbol.toStringTag]: "GPUError";
 }
 
 declare var GPUError: {
@@ -4163,6 +4238,7 @@ interface GPUPipelineError extends DOMException {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/GPUPipelineError/reason)
      */
     readonly reason: GPUPipelineErrorReason;
+    readonly [Symbol.toStringTag]: "GPUPipelineError";
 }
 
 declare var GPUPipelineError: {
@@ -4220,6 +4296,7 @@ interface Headers {
      */
     set(name: string, value: string): void;
     forEach(callbackfn: (value: string, key: string, parent: Headers) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "Headers";
 }
 
 declare var Headers: {
@@ -4293,6 +4370,7 @@ interface IDBCursor {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBCursor/update)
      */
     update(value: any): IDBRequest<IDBValidKey>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var IDBCursor: {
@@ -4312,6 +4390,7 @@ interface IDBCursorWithValue extends IDBCursor {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBCursorWithValue/value)
      */
     readonly value: any;
+    readonly [Symbol.toStringTag]: "IDBCursorWithValue";
 }
 
 declare var IDBCursorWithValue: {
@@ -4385,6 +4464,7 @@ interface IDBDatabase extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBDatabaseEventMap>(type: K, listener: (this: IDBDatabase, ev: IDBDatabaseEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "IDBDatabase";
 }
 
 declare var IDBDatabase: {
@@ -4422,6 +4502,7 @@ interface IDBFactory {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBFactory/open)
      */
     open(name: string, version?: number): IDBOpenDBRequest;
+    readonly [Symbol.toStringTag]: "IDBFactory";
 }
 
 declare var IDBFactory: {
@@ -4507,6 +4588,7 @@ interface IDBIndex {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBIndex/openKeyCursor)
      */
     openKeyCursor(query?: IDBValidKey | IDBKeyRange | null, direction?: IDBCursorDirection): IDBRequest<IDBCursor | null>;
+    readonly [Symbol.toStringTag]: "IDBIndex";
 }
 
 declare var IDBIndex: {
@@ -4550,6 +4632,7 @@ interface IDBKeyRange {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBKeyRange/includes)
      */
     includes(key: any): boolean;
+    readonly [Symbol.toStringTag]: "IDBKeyRange";
 }
 
 declare var IDBKeyRange: {
@@ -4701,6 +4784,7 @@ interface IDBObjectStore {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBObjectStore/put)
      */
     put(value: any, key?: IDBValidKey): IDBRequest<IDBValidKey>;
+    readonly [Symbol.toStringTag]: "IDBObjectStore";
 }
 
 declare var IDBObjectStore: {
@@ -4727,6 +4811,7 @@ interface IDBOpenDBRequest extends IDBRequest<IDBDatabase> {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBOpenDBRequestEventMap>(type: K, listener: (this: IDBOpenDBRequest, ev: IDBOpenDBRequestEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "IDBOpenDBRequest";
 }
 
 declare var IDBOpenDBRequest: {
@@ -4783,6 +4868,7 @@ interface IDBRequest<T = any> extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBRequestEventMap>(type: K, listener: (this: IDBRequest<T>, ev: IDBRequestEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var IDBRequest: {
@@ -4860,6 +4946,7 @@ interface IDBTransaction extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBTransactionEventMap>(type: K, listener: (this: IDBTransaction, ev: IDBTransactionEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "IDBTransaction";
 }
 
 declare var IDBTransaction: {
@@ -4885,6 +4972,7 @@ interface IDBVersionChangeEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBVersionChangeEvent/oldVersion)
      */
     readonly oldVersion: number;
+    readonly [Symbol.toStringTag]: "IDBVersionChangeEvent";
 }
 
 declare var IDBVersionChangeEvent: {
@@ -4916,6 +5004,7 @@ interface ImageBitmap {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageBitmap/close)
      */
     close(): void;
+    readonly [Symbol.toStringTag]: "ImageBitmap";
 }
 
 declare var ImageBitmap: {
@@ -4935,6 +5024,7 @@ interface ImageBitmapRenderingContext {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageBitmapRenderingContext/transferFromImageBitmap)
      */
     transferFromImageBitmap(bitmap: ImageBitmap | null): void;
+    readonly [Symbol.toStringTag]: "ImageBitmapRenderingContext";
 }
 
 declare var ImageBitmapRenderingContext: {
@@ -4972,6 +5062,7 @@ interface ImageData {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageData/width)
      */
     readonly width: number;
+    readonly [Symbol.toStringTag]: "ImageData";
 }
 
 declare var ImageData: {
@@ -5013,6 +5104,7 @@ interface Lock {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Lock/name)
      */
     readonly name: string;
+    readonly [Symbol.toStringTag]: "Lock";
 }
 
 declare var Lock: {
@@ -5040,6 +5132,7 @@ interface LockManager {
      */
     request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
     request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    readonly [Symbol.toStringTag]: "LockManager";
 }
 
 declare var LockManager: {
@@ -5065,6 +5158,7 @@ interface MediaCapabilities {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaCapabilities/encodingInfo)
      */
     encodingInfo(configuration: MediaEncodingConfiguration): Promise<MediaCapabilitiesEncodingInfo>;
+    readonly [Symbol.toStringTag]: "MediaCapabilities";
 }
 
 declare var MediaCapabilities: {
@@ -5090,6 +5184,7 @@ interface MessageChannel {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MessageChannel/port2)
      */
     readonly port2: MessagePort;
+    readonly [Symbol.toStringTag]: "MessageChannel";
 }
 
 declare var MessageChannel: {
@@ -5135,6 +5230,7 @@ interface MessageEvent<T = any> extends Event {
     readonly source: MessageEventSource | null;
     /** @deprecated */
     initMessageEvent(type: string, bubbles?: boolean, cancelable?: boolean, data?: any, origin?: string, lastEventId?: string, source?: MessageEventSource | null, ports?: MessagePort[]): void;
+    readonly [Symbol.toStringTag]: "MessageEvent";
 }
 
 declare var MessageEvent: {
@@ -5192,6 +5288,7 @@ interface MessagePort extends EventTarget, MessageEventTarget<MessagePort> {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MessagePortEventMap>(type: K, listener: (this: MessagePort, ev: MessagePortEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MessagePort";
 }
 
 declare var MessagePort: {
@@ -5230,6 +5327,7 @@ interface NavigationPreloadManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/NavigationPreloadManager/setHeaderValue)
      */
     setHeaderValue(value: string): Promise<void>;
+    readonly [Symbol.toStringTag]: "NavigationPreloadManager";
 }
 
 declare var NavigationPreloadManager: {
@@ -5374,6 +5472,7 @@ interface Notification extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof NotificationEventMap>(type: K, listener: (this: Notification, ev: NotificationEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "Notification";
 }
 
 declare var Notification: {
@@ -5405,6 +5504,7 @@ interface NotificationEvent extends ExtendableEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/NotificationEvent/notification)
      */
     readonly notification: Notification;
+    readonly [Symbol.toStringTag]: "NotificationEvent";
 }
 
 declare var NotificationEvent: {
@@ -5624,6 +5724,7 @@ interface OffscreenCanvas extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof OffscreenCanvasEventMap>(type: K, listener: (this: OffscreenCanvas, ev: OffscreenCanvasEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "OffscreenCanvas";
 }
 
 declare var OffscreenCanvas: {
@@ -5639,6 +5740,7 @@ declare var OffscreenCanvas: {
 interface OffscreenCanvasRenderingContext2D extends CanvasCompositing, CanvasDrawImage, CanvasDrawPath, CanvasFillStrokeStyles, CanvasFilters, CanvasImageData, CanvasImageSmoothing, CanvasPath, CanvasPathDrawingStyles, CanvasRect, CanvasShadowStyles, CanvasState, CanvasText, CanvasTextDrawingStyles, CanvasTransform {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/canvas) */
     readonly canvas: OffscreenCanvas;
+    readonly [Symbol.toStringTag]: "OffscreenCanvasRenderingContext2D";
 }
 
 declare var OffscreenCanvasRenderingContext2D: {
@@ -5658,6 +5760,7 @@ interface Path2D extends CanvasPath {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Path2D/addPath)
      */
     addPath(path: Path2D, transform?: DOMMatrix2DInit): void;
+    readonly [Symbol.toStringTag]: "Path2D";
 }
 
 declare var Path2D: {
@@ -5753,6 +5856,7 @@ interface Performance extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof PerformanceEventMap>(type: K, listener: (this: Performance, ev: PerformanceEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "Performance";
 }
 
 declare var Performance: {
@@ -5796,6 +5900,7 @@ interface PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceEntry/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var PerformanceEntry: {
@@ -5815,6 +5920,7 @@ interface PerformanceMark extends PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceMark/detail)
      */
     readonly detail: any;
+    readonly [Symbol.toStringTag]: "PerformanceMark";
 }
 
 declare var PerformanceMark: {
@@ -5834,6 +5940,7 @@ interface PerformanceMeasure extends PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceMeasure/detail)
      */
     readonly detail: any;
+    readonly [Symbol.toStringTag]: "PerformanceMeasure";
 }
 
 declare var PerformanceMeasure: {
@@ -5865,6 +5972,7 @@ interface PerformanceObserver {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceObserver/takeRecords)
      */
     takeRecords(): PerformanceEntryList;
+    readonly [Symbol.toStringTag]: "PerformanceObserver";
 }
 
 declare var PerformanceObserver: {
@@ -5902,6 +6010,7 @@ interface PerformanceObserverEntryList {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceObserverEntryList/getEntriesByType)
      */
     getEntriesByType(type: string): PerformanceEntryList;
+    readonly [Symbol.toStringTag]: "PerformanceObserverEntryList";
 }
 
 declare var PerformanceObserverEntryList: {
@@ -6035,6 +6144,7 @@ interface PerformanceResourceTiming extends PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceResourceTiming/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "PerformanceResourceTiming";
 }
 
 declare var PerformanceResourceTiming: {
@@ -6072,6 +6182,7 @@ interface PerformanceServerTiming {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceServerTiming/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "PerformanceServerTiming";
 }
 
 declare var PerformanceServerTiming: {
@@ -6107,6 +6218,7 @@ interface PermissionStatus extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof PermissionStatusEventMap>(type: K, listener: (this: PermissionStatus, ev: PermissionStatusEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "PermissionStatus";
 }
 
 declare var PermissionStatus: {
@@ -6126,6 +6238,7 @@ interface Permissions {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Permissions/query)
      */
     query(permissionDesc: PermissionDescriptor): Promise<PermissionStatus>;
+    readonly [Symbol.toStringTag]: "Permissions";
 }
 
 declare var Permissions: {
@@ -6158,6 +6271,7 @@ interface ProgressEvent<T extends EventTarget = EventTarget> extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ProgressEvent/total)
      */
     readonly total: number;
+    readonly [Symbol.toStringTag]: "ProgressEvent";
 }
 
 declare var ProgressEvent: {
@@ -6183,6 +6297,7 @@ interface PromiseRejectionEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PromiseRejectionEvent/reason)
      */
     readonly reason: any;
+    readonly [Symbol.toStringTag]: "PromiseRejectionEvent";
 }
 
 declare var PromiseRejectionEvent: {
@@ -6203,6 +6318,7 @@ interface PushEvent extends ExtendableEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushEvent/data)
      */
     readonly data: PushMessageData | null;
+    readonly [Symbol.toStringTag]: "PushEvent";
 }
 
 declare var PushEvent: {
@@ -6235,6 +6351,7 @@ interface PushManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushManager/subscribe)
      */
     subscribe(options?: PushSubscriptionOptionsInit): Promise<PushSubscription>;
+    readonly [Symbol.toStringTag]: "PushManager";
 }
 
 declare var PushManager: {
@@ -6291,6 +6408,7 @@ interface PushMessageData {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushMessageData/text)
      */
     text(): string;
+    readonly [Symbol.toStringTag]: "PushMessageData";
 }
 
 declare var PushMessageData: {
@@ -6341,6 +6459,7 @@ interface PushSubscription {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushSubscription/unsubscribe)
      */
     unsubscribe(): Promise<boolean>;
+    readonly [Symbol.toStringTag]: "PushSubscription";
 }
 
 declare var PushSubscription: {
@@ -6352,6 +6471,7 @@ declare var PushSubscription: {
 interface PushSubscriptionChangeEvent extends ExtendableEvent {
     readonly newSubscription: PushSubscription | null;
     readonly oldSubscription: PushSubscription | null;
+    readonly [Symbol.toStringTag]: "PushSubscriptionChangeEvent";
 }
 
 declare var PushSubscriptionChangeEvent: {
@@ -6378,6 +6498,7 @@ interface PushSubscriptionOptions {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushSubscriptionOptions/userVisibleOnly)
      */
     readonly userVisibleOnly: boolean;
+    readonly [Symbol.toStringTag]: "PushSubscriptionOptions";
 }
 
 declare var PushSubscriptionOptions: {
@@ -6421,6 +6542,7 @@ interface ReadableByteStreamController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableByteStreamController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "ReadableByteStreamController";
 }
 
 declare var ReadableByteStreamController: {
@@ -6472,6 +6594,7 @@ interface ReadableStream<R = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStream/tee)
      */
     tee(): [ReadableStream<R>, ReadableStream<R>];
+    readonly [Symbol.toStringTag]: "ReadableStream";
 }
 
 declare var ReadableStream: {
@@ -6499,6 +6622,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/releaseLock)
      */
     releaseLock(): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamBYOBReader";
 }
 
 declare var ReadableStreamBYOBReader: {
@@ -6530,6 +6654,7 @@ interface ReadableStreamBYOBRequest {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBRequest/respondWithNewView)
      */
     respondWithNewView(view: ArrayBufferView<ArrayBuffer>): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamBYOBRequest";
 }
 
 declare var ReadableStreamBYOBRequest: {
@@ -6567,6 +6692,7 @@ interface ReadableStreamDefaultController<R = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamDefaultController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamDefaultController";
 }
 
 declare var ReadableStreamDefaultController: {
@@ -6592,6 +6718,7 @@ interface ReadableStreamDefaultReader<R = any> extends ReadableStreamGenericRead
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamDefaultReader/releaseLock)
      */
     releaseLock(): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamDefaultReader";
 }
 
 declare var ReadableStreamDefaultReader: {
@@ -6630,6 +6757,7 @@ interface ReportingObserver {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReportingObserver/takeRecords)
      */
     takeRecords(): ReportList;
+    readonly [Symbol.toStringTag]: "ReportingObserver";
 }
 
 declare var ReportingObserver: {
@@ -6727,6 +6855,7 @@ interface Request extends Body {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Request/clone)
      */
     clone(): Request;
+    readonly [Symbol.toStringTag]: "Request";
 }
 
 declare var Request: {
@@ -6788,6 +6917,7 @@ interface Response extends Body {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Response/clone)
      */
     clone(): Response;
+    readonly [Symbol.toStringTag]: "Response";
 }
 
 declare var Response: {
@@ -6831,6 +6961,7 @@ interface Scheduler {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Scheduler/yield)
      */
     yield(): Promise<void>;
+    readonly [Symbol.toStringTag]: "Scheduler";
 }
 
 declare var Scheduler: {
@@ -6916,6 +7047,7 @@ interface SecurityPolicyViolationEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SecurityPolicyViolationEvent/violatedDirective)
      */
     readonly violatedDirective: string;
+    readonly [Symbol.toStringTag]: "SecurityPolicyViolationEvent";
 }
 
 declare var SecurityPolicyViolationEvent: {
@@ -6959,6 +7091,7 @@ interface ServiceWorker extends EventTarget, AbstractWorker {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ServiceWorkerEventMap>(type: K, listener: (this: ServiceWorker, ev: ServiceWorkerEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ServiceWorker";
 }
 
 declare var ServiceWorker: {
@@ -7025,6 +7158,7 @@ interface ServiceWorkerContainer extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ServiceWorkerContainerEventMap>(type: K, listener: (this: ServiceWorkerContainer, ev: ServiceWorkerContainerEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ServiceWorkerContainer";
 }
 
 declare var ServiceWorkerContainer: {
@@ -7106,6 +7240,7 @@ interface ServiceWorkerGlobalScope extends WorkerGlobalScope {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ServiceWorkerGlobalScopeEventMap>(type: K, listener: (this: ServiceWorkerGlobalScope, ev: ServiceWorkerGlobalScopeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ServiceWorkerGlobalScope";
 }
 
 declare var ServiceWorkerGlobalScope: {
@@ -7196,6 +7331,7 @@ interface ServiceWorkerRegistration extends EventTarget, PushManagerAttribute {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ServiceWorkerRegistrationEventMap>(type: K, listener: (this: ServiceWorkerRegistration, ev: ServiceWorkerRegistrationEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ServiceWorkerRegistration";
 }
 
 declare var ServiceWorkerRegistration: {
@@ -7228,6 +7364,7 @@ interface StorageManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/StorageManager/persisted)
      */
     persisted(): Promise<boolean>;
+    readonly [Symbol.toStringTag]: "StorageManager";
 }
 
 declare var StorageManager: {
@@ -7266,6 +7403,7 @@ interface StylePropertyMapReadOnly {
      */
     has(property: string): boolean;
     forEach(callbackfn: (value: CSSStyleValue[], key: string, parent: StylePropertyMapReadOnly) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "StylePropertyMapReadOnly";
 }
 
 declare var StylePropertyMapReadOnly: {
@@ -7358,6 +7496,7 @@ interface SubtleCrypto {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/wrapKey)
      */
     wrapKey(format: KeyFormat, key: CryptoKey, wrappingKey: CryptoKey, wrapAlgorithm: AlgorithmIdentifier | RsaOaepParams | AesCtrParams | AesCbcParams | AesGcmParams): Promise<ArrayBuffer>;
+    readonly [Symbol.toStringTag]: "SubtleCrypto";
 }
 
 declare var SubtleCrypto: {
@@ -7377,6 +7516,7 @@ interface TaskController extends AbortController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TaskController/setPriority)
      */
     setPriority(priority: TaskPriority): void;
+    readonly [Symbol.toStringTag]: "TaskController";
 }
 
 declare var TaskController: {
@@ -7396,6 +7536,7 @@ interface TaskPriorityChangeEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TaskPriorityChangeEvent/previousPriority)
      */
     readonly previousPriority: TaskPriority;
+    readonly [Symbol.toStringTag]: "TaskPriorityChangeEvent";
 }
 
 declare var TaskPriorityChangeEvent: {
@@ -7425,6 +7566,7 @@ interface TaskSignal extends AbortSignal {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof TaskSignalEventMap>(type: K, listener: (this: TaskSignal, ev: TaskSignalEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "TaskSignal";
 }
 
 declare var TaskSignal: {
@@ -7450,6 +7592,7 @@ interface TextDecoder extends TextDecoderCommon {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextDecoder/decode)
      */
     decode(input?: AllowSharedBufferSource, options?: TextDecodeOptions): string;
+    readonly [Symbol.toStringTag]: "TextDecoder";
 }
 
 declare var TextDecoder: {
@@ -7486,6 +7629,7 @@ interface TextDecoderCommon {
 interface TextDecoderStream extends GenericTransformStream, TextDecoderCommon {
     readonly readable: ReadableStream<string>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "TextDecoderStream";
 }
 
 declare var TextDecoderStream: {
@@ -7511,6 +7655,7 @@ interface TextEncoder extends TextEncoderCommon {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextEncoder/encodeInto)
      */
     encodeInto(source: string, destination: Uint8Array<ArrayBufferLike>): TextEncoderEncodeIntoResult;
+    readonly [Symbol.toStringTag]: "TextEncoder";
 }
 
 declare var TextEncoder: {
@@ -7535,6 +7680,7 @@ interface TextEncoderCommon {
 interface TextEncoderStream extends GenericTransformStream, TextEncoderCommon {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<string>;
+    readonly [Symbol.toStringTag]: "TextEncoderStream";
 }
 
 declare var TextEncoderStream: {
@@ -7620,6 +7766,7 @@ interface TextMetrics {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextMetrics/width)
      */
     readonly width: number;
+    readonly [Symbol.toStringTag]: "TextMetrics";
 }
 
 declare var TextMetrics: {
@@ -7645,6 +7792,7 @@ interface TransformStream<I = any, O = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TransformStream/writable)
      */
     readonly writable: WritableStream<I>;
+    readonly [Symbol.toStringTag]: "TransformStream";
 }
 
 declare var TransformStream: {
@@ -7682,6 +7830,7 @@ interface TransformStreamDefaultController<O = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TransformStreamDefaultController/terminate)
      */
     terminate(): void;
+    readonly [Symbol.toStringTag]: "TransformStreamDefaultController";
 }
 
 declare var TransformStreamDefaultController: {
@@ -7774,6 +7923,7 @@ interface URL {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/URL/toJSON)
      */
     toJSON(): string;
+    readonly [Symbol.toStringTag]: "URL";
 }
 
 declare var URL: {
@@ -7865,6 +8015,7 @@ interface URLPattern {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/URLPattern/test)
      */
     test(input?: URLPatternInput, baseURL?: string | URL): boolean;
+    readonly [Symbol.toStringTag]: "URLPattern";
 }
 
 declare var URLPattern: {
@@ -7929,6 +8080,7 @@ interface URLSearchParams {
     sort(): void;
     toString(): string;
     forEach(callbackfn: (value: string, key: string, parent: URLSearchParams) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "URLSearchParams";
 }
 
 declare var URLSearchParams: {
@@ -8191,6 +8343,7 @@ interface WEBGL_multi_draw {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext)
  */
 interface WebGL2RenderingContext extends WebGL2RenderingContextBase, WebGL2RenderingContextOverloads, WebGLRenderingContextBase {
+    readonly [Symbol.toStringTag]: "WebGL2RenderingContext";
 }
 
 declare var WebGL2RenderingContext: {
@@ -9283,6 +9436,7 @@ interface WebGLActiveInfo {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLActiveInfo/type)
      */
     readonly type: GLenum;
+    readonly [Symbol.toStringTag]: "WebGLActiveInfo";
 }
 
 declare var WebGLActiveInfo: {
@@ -9296,6 +9450,7 @@ declare var WebGLActiveInfo: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLBuffer)
  */
 interface WebGLBuffer {
+    readonly [Symbol.toStringTag]: "WebGLBuffer";
 }
 
 declare var WebGLBuffer: {
@@ -9315,6 +9470,7 @@ interface WebGLContextEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLContextEvent/statusMessage)
      */
     readonly statusMessage: string;
+    readonly [Symbol.toStringTag]: "WebGLContextEvent";
 }
 
 declare var WebGLContextEvent: {
@@ -9328,6 +9484,7 @@ declare var WebGLContextEvent: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLFramebuffer)
  */
 interface WebGLFramebuffer {
+    readonly [Symbol.toStringTag]: "WebGLFramebuffer";
 }
 
 declare var WebGLFramebuffer: {
@@ -9341,6 +9498,7 @@ declare var WebGLFramebuffer: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLProgram)
  */
 interface WebGLProgram {
+    readonly [Symbol.toStringTag]: "WebGLProgram";
 }
 
 declare var WebGLProgram: {
@@ -9354,6 +9512,7 @@ declare var WebGLProgram: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLQuery)
  */
 interface WebGLQuery {
+    readonly [Symbol.toStringTag]: "WebGLQuery";
 }
 
 declare var WebGLQuery: {
@@ -9367,6 +9526,7 @@ declare var WebGLQuery: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderbuffer)
  */
 interface WebGLRenderbuffer {
+    readonly [Symbol.toStringTag]: "WebGLRenderbuffer";
 }
 
 declare var WebGLRenderbuffer: {
@@ -9380,6 +9540,7 @@ declare var WebGLRenderbuffer: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext)
  */
 interface WebGLRenderingContext extends WebGLRenderingContextBase, WebGLRenderingContextOverloads {
+    readonly [Symbol.toStringTag]: "WebGLRenderingContext";
 }
 
 declare var WebGLRenderingContext: {
@@ -10310,6 +10471,7 @@ interface WebGLRenderingContextOverloads {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLSampler)
  */
 interface WebGLSampler {
+    readonly [Symbol.toStringTag]: "WebGLSampler";
 }
 
 declare var WebGLSampler: {
@@ -10323,6 +10485,7 @@ declare var WebGLSampler: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLShader)
  */
 interface WebGLShader {
+    readonly [Symbol.toStringTag]: "WebGLShader";
 }
 
 declare var WebGLShader: {
@@ -10354,6 +10517,7 @@ interface WebGLShaderPrecisionFormat {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLShaderPrecisionFormat/rangeMin)
      */
     readonly rangeMin: GLint;
+    readonly [Symbol.toStringTag]: "WebGLShaderPrecisionFormat";
 }
 
 declare var WebGLShaderPrecisionFormat: {
@@ -10367,6 +10531,7 @@ declare var WebGLShaderPrecisionFormat: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLSync)
  */
 interface WebGLSync {
+    readonly [Symbol.toStringTag]: "WebGLSync";
 }
 
 declare var WebGLSync: {
@@ -10380,6 +10545,7 @@ declare var WebGLSync: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLTexture)
  */
 interface WebGLTexture {
+    readonly [Symbol.toStringTag]: "WebGLTexture";
 }
 
 declare var WebGLTexture: {
@@ -10393,6 +10559,7 @@ declare var WebGLTexture: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLTransformFeedback)
  */
 interface WebGLTransformFeedback {
+    readonly [Symbol.toStringTag]: "WebGLTransformFeedback";
 }
 
 declare var WebGLTransformFeedback: {
@@ -10406,6 +10573,7 @@ declare var WebGLTransformFeedback: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLUniformLocation)
  */
 interface WebGLUniformLocation {
+    readonly [Symbol.toStringTag]: "WebGLUniformLocation";
 }
 
 declare var WebGLUniformLocation: {
@@ -10419,6 +10587,7 @@ declare var WebGLUniformLocation: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLVertexArrayObject)
  */
 interface WebGLVertexArrayObject {
+    readonly [Symbol.toStringTag]: "WebGLVertexArrayObject";
 }
 
 declare var WebGLVertexArrayObject: {
@@ -10507,6 +10676,7 @@ interface WebSocket extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof WebSocketEventMap>(type: K, listener: (this: WebSocket, ev: WebSocketEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "WebSocket";
 }
 
 declare var WebSocket: {
@@ -10573,6 +10743,7 @@ interface WebTransport {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransport/createUnidirectionalStream)
      */
     createUnidirectionalStream(options?: WebTransportSendStreamOptions): Promise<WritableStream>;
+    readonly [Symbol.toStringTag]: "WebTransport";
 }
 
 declare var WebTransport: {
@@ -10599,6 +10770,7 @@ interface WebTransportBidirectionalStream {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransportBidirectionalStream/writable)
      */
     readonly writable: WritableStream;
+    readonly [Symbol.toStringTag]: "WebTransportBidirectionalStream";
 }
 
 declare var WebTransportBidirectionalStream: {
@@ -10651,6 +10823,7 @@ interface WebTransportDatagramDuplexStream {
     readonly readable: ReadableStream;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransportDatagramDuplexStream/writable) */
     readonly writable: WritableStream;
+    readonly [Symbol.toStringTag]: "WebTransportDatagramDuplexStream";
 }
 
 declare var WebTransportDatagramDuplexStream: {
@@ -10677,6 +10850,7 @@ interface WebTransportError extends DOMException {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransportError/streamErrorCode)
      */
     readonly streamErrorCode: number | null;
+    readonly [Symbol.toStringTag]: "WebTransportError";
 }
 
 declare var WebTransportError: {
@@ -10714,6 +10888,7 @@ interface WindowClient extends Client {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WindowClient/navigate)
      */
     navigate(url: string | URL): Promise<WindowClient | null>;
+    readonly [Symbol.toStringTag]: "WindowClient";
 }
 
 declare var WindowClient: {
@@ -10822,6 +10997,7 @@ interface WorkerGlobalScope extends EventTarget, FontFaceSource, WindowOrWorkerG
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof WorkerGlobalScopeEventMap>(type: K, listener: (this: WorkerGlobalScope, ev: WorkerGlobalScopeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var WorkerGlobalScope: {
@@ -10890,6 +11066,7 @@ interface WorkerLocation {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WorkerLocation/search)
      */
     readonly search: string;
+    readonly [Symbol.toStringTag]: "WorkerLocation";
 }
 
 declare var WorkerLocation: {
@@ -10922,6 +11099,7 @@ interface WorkerNavigator extends NavigatorBadge, NavigatorConcurrentHardware, N
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WorkerNavigator/serviceWorker)
      */
     readonly serviceWorker: ServiceWorkerContainer;
+    readonly [Symbol.toStringTag]: "WorkerNavigator";
 }
 
 declare var WorkerNavigator: {
@@ -10959,6 +11137,7 @@ interface WritableStream<W = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStream/getWriter)
      */
     getWriter(): WritableStreamDefaultWriter<W>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var WritableStream: {
@@ -10984,6 +11163,7 @@ interface WritableStreamDefaultController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStreamDefaultController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "WritableStreamDefaultController";
 }
 
 declare var WritableStreamDefaultController: {
@@ -11039,6 +11219,7 @@ interface WritableStreamDefaultWriter<W = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStreamDefaultWriter/write)
      */
     write(chunk?: W): Promise<void>;
+    readonly [Symbol.toStringTag]: "WritableStreamDefaultWriter";
 }
 
 declare var WritableStreamDefaultWriter: {
@@ -11048,6 +11229,7 @@ declare var WritableStreamDefaultWriter: {
 
 declare namespace WebAssembly {
     interface CompileError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.CompileError";
     }
 
     var CompileError: {
@@ -11080,6 +11262,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Exception/is)
          */
         is(exceptionTag: Tag): boolean;
+        readonly [Symbol.toStringTag]: "WebAssembly.Exception";
     }
 
     var Exception: {
@@ -11095,6 +11278,7 @@ declare namespace WebAssembly {
     interface Global<T extends ValueType = ValueType> {
         value: ValueTypeMap[T];
         valueOf(): ValueTypeMap[T];
+        readonly [Symbol.toStringTag]: "WebAssembly.Global";
     }
 
     var Global: {
@@ -11114,6 +11298,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Instance/exports)
          */
         readonly exports: Exports;
+        readonly [Symbol.toStringTag]: "WebAssembly.Instance";
     }
 
     var Instance: {
@@ -11122,6 +11307,7 @@ declare namespace WebAssembly {
     };
 
     interface LinkError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.LinkError";
     }
 
     var LinkError: {
@@ -11148,6 +11334,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Memory/grow)
          */
         grow(delta: AddressValue): AddressValue;
+        readonly [Symbol.toStringTag]: "WebAssembly.Memory";
     }
 
     var Memory: {
@@ -11161,6 +11348,7 @@ declare namespace WebAssembly {
      * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Module)
      */
     interface Module {
+        readonly [Symbol.toStringTag]: "WebAssembly.Module";
     }
 
     var Module: {
@@ -11187,6 +11375,7 @@ declare namespace WebAssembly {
     };
 
     interface RuntimeError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.RuntimeError";
     }
 
     var RuntimeError: {
@@ -11225,6 +11414,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Table/set)
          */
         set(index: AddressValue, value?: any): void;
+        readonly [Symbol.toStringTag]: "WebAssembly.Table";
     }
 
     var Table: {
@@ -11238,6 +11428,7 @@ declare namespace WebAssembly {
      * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Tag)
      */
     interface Tag {
+        readonly [Symbol.toStringTag]: "WebAssembly.Tag";
     }
 
     var Tag: {
@@ -11865,6 +12056,7 @@ interface FontFaceSet extends Set<FontFace> {
 
 interface FormDataIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): FormDataIterator<T>;
+    readonly [Symbol.toStringTag]: "FormData Iterator";
 }
 
 interface FormData {
@@ -11879,6 +12071,7 @@ interface FormData {
 
 interface HeadersIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): HeadersIterator<T>;
+    readonly [Symbol.toStringTag]: "Headers Iterator";
 }
 
 interface Headers {
@@ -11916,6 +12109,7 @@ interface MessageEvent<T = any> {
 
 interface StylePropertyMapReadOnlyIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): StylePropertyMapReadOnlyIterator<T>;
+    readonly [Symbol.toStringTag]: "StylePropertyMapReadOnly Iterator";
 }
 
 interface StylePropertyMapReadOnly {
@@ -11958,6 +12152,7 @@ interface SubtleCrypto {
 
 interface URLSearchParamsIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): URLSearchParamsIterator<T>;
+    readonly [Symbol.toStringTag]: "URLSearchParams Iterator";
 }
 
 interface URLSearchParams {
@@ -12119,6 +12314,7 @@ interface WebGLRenderingContextOverloads {
 
 interface FileSystemDirectoryHandleAsyncIterator<T> extends AsyncIteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.asyncIterator](): FileSystemDirectoryHandleAsyncIterator<T>;
+    readonly [Symbol.toStringTag]: "FileSystemDirectoryHandle AsyncIterator";
 }
 
 interface FileSystemDirectoryHandle {
@@ -12130,6 +12326,7 @@ interface FileSystemDirectoryHandle {
 
 interface ReadableStreamAsyncIterator<T> extends AsyncIteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.asyncIterator](): ReadableStreamAsyncIterator<T>;
+    readonly [Symbol.toStringTag]: "ReadableStream AsyncIterator";
 }
 
 interface ReadableStream<R = any> {
diff --git a/baselines/sharedworker.generated.d.ts b/baselines/sharedworker.generated.d.ts
index 9ab81e107..ee9c5fa4e 100644
--- a/baselines/sharedworker.generated.d.ts
+++ b/baselines/sharedworker.generated.d.ts
@@ -856,6 +856,7 @@ interface AbortController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AbortController/abort)
      */
     abort(reason?: any): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AbortController: {
@@ -897,6 +898,7 @@ interface AbortSignal extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AbortSignalEventMap>(type: K, listener: (this: AbortSignal, ev: AbortSignalEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AbortSignal: {
@@ -983,6 +985,7 @@ interface Blob {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Blob/text)
      */
     text(): Promise<string>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Blob: {
@@ -1046,6 +1049,7 @@ interface BroadcastChannel extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof BroadcastChannelEventMap>(type: K, listener: (this: BroadcastChannel, ev: BroadcastChannelEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "BroadcastChannel";
 }
 
 declare var BroadcastChannel: {
@@ -1067,6 +1071,7 @@ interface ByteLengthQueuingStrategy extends QueuingStrategy<ArrayBufferView> {
     readonly highWaterMark: number;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/ByteLengthQueuingStrategy/size) */
     readonly size: QueuingStrategySize<ArrayBufferView>;
+    readonly [Symbol.toStringTag]: "ByteLengthQueuingStrategy";
 }
 
 declare var ByteLengthQueuingStrategy: {
@@ -1080,6 +1085,7 @@ declare var ByteLengthQueuingStrategy: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSImageValue)
  */
 interface CSSImageValue extends CSSStyleValue {
+    readonly [Symbol.toStringTag]: "CSSImageValue";
 }
 
 declare var CSSImageValue: {
@@ -1099,6 +1105,7 @@ interface CSSKeywordValue extends CSSStyleValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSKeywordValue/value)
      */
     value: string;
+    readonly [Symbol.toStringTag]: "CSSKeywordValue";
 }
 
 declare var CSSKeywordValue: {
@@ -1110,6 +1117,7 @@ interface CSSMathClamp extends CSSMathValue {
     readonly lower: CSSNumericValue;
     readonly upper: CSSNumericValue;
     readonly value: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSMathClamp";
 }
 
 declare var CSSMathClamp: {
@@ -1129,6 +1137,7 @@ interface CSSMathInvert extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathInvert/value)
      */
     readonly value: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSMathInvert";
 }
 
 declare var CSSMathInvert: {
@@ -1148,6 +1157,7 @@ interface CSSMathMax extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathMax/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathMax";
 }
 
 declare var CSSMathMax: {
@@ -1167,6 +1177,7 @@ interface CSSMathMin extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathMin/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathMin";
 }
 
 declare var CSSMathMin: {
@@ -1186,6 +1197,7 @@ interface CSSMathNegate extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathNegate/value)
      */
     readonly value: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSMathNegate";
 }
 
 declare var CSSMathNegate: {
@@ -1205,6 +1217,7 @@ interface CSSMathProduct extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathProduct/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathProduct";
 }
 
 declare var CSSMathProduct: {
@@ -1224,6 +1237,7 @@ interface CSSMathSum extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathSum/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathSum";
 }
 
 declare var CSSMathSum: {
@@ -1243,6 +1257,7 @@ interface CSSMathValue extends CSSNumericValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathValue/operator)
      */
     readonly operator: CSSMathOperator;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSMathValue: {
@@ -1262,6 +1277,7 @@ interface CSSMatrixComponent extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMatrixComponent/matrix)
      */
     matrix: DOMMatrix;
+    readonly [Symbol.toStringTag]: "CSSMatrixComponent";
 }
 
 declare var CSSMatrixComponent: {
@@ -1283,6 +1299,7 @@ interface CSSNumericArray {
     readonly length: number;
     forEach(callbackfn: (value: CSSNumericValue, key: number, parent: CSSNumericArray) => void, thisArg?: any): void;
     [index: number]: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSNumericArray";
 }
 
 declare var CSSNumericArray: {
@@ -1356,6 +1373,7 @@ interface CSSNumericValue extends CSSStyleValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSNumericValue/type)
      */
     type(): CSSNumericType;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSNumericValue: {
@@ -1375,6 +1393,7 @@ interface CSSPerspective extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSPerspective/length)
      */
     length: CSSPerspectiveValue;
+    readonly [Symbol.toStringTag]: "CSSPerspective";
 }
 
 declare var CSSPerspective: {
@@ -1412,6 +1431,7 @@ interface CSSRotate extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSRotate/z)
      */
     z: CSSNumberish;
+    readonly [Symbol.toStringTag]: "CSSRotate";
 }
 
 declare var CSSRotate: {
@@ -1444,6 +1464,7 @@ interface CSSScale extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSScale/z)
      */
     z: CSSNumberish;
+    readonly [Symbol.toStringTag]: "CSSScale";
 }
 
 declare var CSSScale: {
@@ -1469,6 +1490,7 @@ interface CSSSkew extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSSkew/ay)
      */
     ay: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSSkew";
 }
 
 declare var CSSSkew: {
@@ -1488,6 +1510,7 @@ interface CSSSkewX extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSSkewX/ax)
      */
     ax: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSSkewX";
 }
 
 declare var CSSSkewX: {
@@ -1507,6 +1530,7 @@ interface CSSSkewY extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSSkewY/ay)
      */
     ay: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSSkewY";
 }
 
 declare var CSSSkewY: {
@@ -1521,6 +1545,7 @@ declare var CSSSkewY: {
  */
 interface CSSStyleValue {
     toString(): string;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSStyleValue: {
@@ -1547,6 +1572,7 @@ interface CSSTransformComponent {
      */
     toMatrix(): DOMMatrix;
     toString(): string;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSTransformComponent: {
@@ -1580,6 +1606,7 @@ interface CSSTransformValue extends CSSStyleValue {
     toMatrix(): DOMMatrix;
     forEach(callbackfn: (value: CSSTransformComponent, key: number, parent: CSSTransformValue) => void, thisArg?: any): void;
     [index: number]: CSSTransformComponent;
+    readonly [Symbol.toStringTag]: "CSSTransformValue";
 }
 
 declare var CSSTransformValue: {
@@ -1611,6 +1638,7 @@ interface CSSTranslate extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSTranslate/z)
      */
     z: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSTranslate";
 }
 
 declare var CSSTranslate: {
@@ -1636,6 +1664,7 @@ interface CSSUnitValue extends CSSNumericValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSUnitValue/value)
      */
     value: number;
+    readonly [Symbol.toStringTag]: "CSSUnitValue";
 }
 
 declare var CSSUnitValue: {
@@ -1657,6 +1686,7 @@ interface CSSUnparsedValue extends CSSStyleValue {
     readonly length: number;
     forEach(callbackfn: (value: CSSUnparsedSegment, key: number, parent: CSSUnparsedValue) => void, thisArg?: any): void;
     [index: number]: CSSUnparsedSegment;
+    readonly [Symbol.toStringTag]: "CSSUnparsedValue";
 }
 
 declare var CSSUnparsedValue: {
@@ -1682,6 +1712,7 @@ interface CSSVariableReferenceValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSVariableReferenceValue/variable)
      */
     variable: string;
+    readonly [Symbol.toStringTag]: "CSSVariableReferenceValue";
 }
 
 declare var CSSVariableReferenceValue: {
@@ -1738,6 +1769,7 @@ interface Cache {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Cache/put)
      */
     put(request: RequestInfo | URL, response: Response): Promise<void>;
+    readonly [Symbol.toStringTag]: "Cache";
 }
 
 declare var Cache: {
@@ -1782,6 +1814,7 @@ interface CacheStorage {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CacheStorage/open)
      */
     open(cacheName: string): Promise<Cache>;
+    readonly [Symbol.toStringTag]: "CacheStorage";
 }
 
 declare var CacheStorage: {
@@ -1855,6 +1888,7 @@ interface CanvasGradient {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CanvasGradient/addColorStop)
      */
     addColorStop(offset: number, color: string): void;
+    readonly [Symbol.toStringTag]: "CanvasGradient";
 }
 
 declare var CanvasGradient: {
@@ -1932,6 +1966,7 @@ interface CanvasPattern {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CanvasPattern/setTransform)
      */
     setTransform(transform?: DOMMatrix2DInit): void;
+    readonly [Symbol.toStringTag]: "CanvasPattern";
 }
 
 declare var CanvasPattern: {
@@ -2044,6 +2079,7 @@ interface CloseEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CloseEvent/wasClean)
      */
     readonly wasClean: boolean;
+    readonly [Symbol.toStringTag]: "CloseEvent";
 }
 
 declare var CloseEvent: {
@@ -2059,6 +2095,7 @@ declare var CloseEvent: {
 interface CompressionStream extends GenericTransformStream {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "CompressionStream";
 }
 
 declare var CompressionStream: {
@@ -2080,6 +2117,7 @@ interface CountQueuingStrategy extends QueuingStrategy {
     readonly highWaterMark: number;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/CountQueuingStrategy/size) */
     readonly size: QueuingStrategySize;
+    readonly [Symbol.toStringTag]: "CountQueuingStrategy";
 }
 
 declare var CountQueuingStrategy: {
@@ -2113,6 +2151,7 @@ interface Crypto {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/randomUUID)
      */
     randomUUID(): `${string}-${string}-${string}-${string}-${string}`;
+    readonly [Symbol.toStringTag]: "Crypto";
 }
 
 declare var Crypto: {
@@ -2151,6 +2190,7 @@ interface CryptoKey {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CryptoKey/usages)
      */
     readonly usages: KeyUsage[];
+    readonly [Symbol.toStringTag]: "CryptoKey";
 }
 
 declare var CryptoKey: {
@@ -2177,6 +2217,7 @@ interface CustomEvent<T = any> extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CustomEvent/initCustomEvent)
      */
     initCustomEvent(type: string, bubbles?: boolean, cancelable?: boolean, detail?: T): void;
+    readonly [Symbol.toStringTag]: "CustomEvent";
 }
 
 declare var CustomEvent: {
@@ -2234,6 +2275,7 @@ interface DOMException extends Error {
     readonly TIMEOUT_ERR: 23;
     readonly INVALID_NODE_TYPE_ERR: 24;
     readonly DATA_CLONE_ERR: 25;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMException: {
@@ -2382,6 +2424,7 @@ interface DOMMatrix extends DOMMatrixReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMMatrix/translateSelf)
      */
     translateSelf(tx?: number, ty?: number, tz?: number): DOMMatrix;
+    readonly [Symbol.toStringTag]: "DOMMatrix";
 }
 
 declare var DOMMatrix: {
@@ -2552,6 +2595,7 @@ interface DOMMatrixReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMMatrixReadOnly/translate)
      */
     translate(tx?: number, ty?: number, tz?: number): DOMMatrix;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMMatrixReadOnly: {
@@ -2592,6 +2636,7 @@ interface DOMPoint extends DOMPointReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMPoint/z)
      */
     z: number;
+    readonly [Symbol.toStringTag]: "DOMPoint";
 }
 
 declare var DOMPoint: {
@@ -2647,6 +2692,7 @@ interface DOMPointReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMPointReadOnly/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMPointReadOnly: {
@@ -2702,6 +2748,7 @@ interface DOMQuad {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMQuad/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "DOMQuad";
 }
 
 declare var DOMQuad: {
@@ -2741,6 +2788,7 @@ interface DOMRect extends DOMRectReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMRect/y)
      */
     y: number;
+    readonly [Symbol.toStringTag]: "DOMRect";
 }
 
 declare var DOMRect: {
@@ -2814,6 +2862,7 @@ interface DOMRectReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMRectReadOnly/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMRectReadOnly: {
@@ -2852,6 +2901,7 @@ interface DOMStringList {
      */
     item(index: number): string | null;
     [index: number]: string;
+    readonly [Symbol.toStringTag]: "DOMStringList";
 }
 
 declare var DOMStringList: {
@@ -2867,6 +2917,7 @@ declare var DOMStringList: {
 interface DecompressionStream extends GenericTransformStream {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "DecompressionStream";
 }
 
 declare var DecompressionStream: {
@@ -3026,6 +3077,7 @@ interface ErrorEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ErrorEvent/message)
      */
     readonly message: string;
+    readonly [Symbol.toStringTag]: "ErrorEvent";
 }
 
 declare var ErrorEvent: {
@@ -3155,6 +3207,7 @@ interface Event {
     readonly CAPTURING_PHASE: 1;
     readonly AT_TARGET: 2;
     readonly BUBBLING_PHASE: 3;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Event: {
@@ -3225,6 +3278,7 @@ interface EventSource extends EventTarget {
     removeEventListener<K extends keyof EventSourceEventMap>(type: K, listener: (this: EventSource, ev: EventSourceEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: (this: EventSource, event: MessageEvent) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "EventSource";
 }
 
 declare var EventSource: {
@@ -3259,6 +3313,7 @@ interface EventTarget {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/EventTarget/removeEventListener)
      */
     removeEventListener(type: string, callback: EventListenerOrEventListenerObject | null, options?: EventListenerOptions | boolean): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var EventTarget: {
@@ -3290,6 +3345,7 @@ interface File extends Blob {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/File/webkitRelativePath)
      */
     readonly webkitRelativePath: string;
+    readonly [Symbol.toStringTag]: "File";
 }
 
 declare var File: {
@@ -3316,6 +3372,7 @@ interface FileList {
      */
     item(index: number): File | null;
     [index: number]: File;
+    readonly [Symbol.toStringTag]: "FileList";
 }
 
 declare var FileList: {
@@ -3406,6 +3463,7 @@ interface FileReader extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof FileReaderEventMap>(type: K, listener: (this: FileReader, ev: FileReaderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "FileReader";
 }
 
 declare var FileReader: {
@@ -3447,6 +3505,7 @@ interface FileReaderSync {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileReaderSync/readAsText)
      */
     readAsText(blob: Blob, encoding?: string): string;
+    readonly [Symbol.toStringTag]: "FileReaderSync";
 }
 
 declare var FileReaderSync: {
@@ -3486,6 +3545,7 @@ interface FileSystemDirectoryHandle extends FileSystemHandle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemDirectoryHandle/resolve)
      */
     resolve(possibleDescendant: FileSystemHandle): Promise<string[] | null>;
+    readonly [Symbol.toStringTag]: "FileSystemDirectoryHandle";
 }
 
 declare var FileSystemDirectoryHandle: {
@@ -3513,6 +3573,7 @@ interface FileSystemFileHandle extends FileSystemHandle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemFileHandle/getFile)
      */
     getFile(): Promise<File>;
+    readonly [Symbol.toStringTag]: "FileSystemFileHandle";
 }
 
 declare var FileSystemFileHandle: {
@@ -3545,6 +3606,7 @@ interface FileSystemHandle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemHandle/isSameEntry)
      */
     isSameEntry(other: FileSystemHandle): Promise<boolean>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var FileSystemHandle: {
@@ -3577,6 +3639,7 @@ interface FileSystemWritableFileStream extends WritableStream {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemWritableFileStream/write)
      */
     write(data: FileSystemWriteChunkType): Promise<void>;
+    readonly [Symbol.toStringTag]: "FileSystemWritableFileStream";
 }
 
 declare var FileSystemWritableFileStream: {
@@ -3674,6 +3737,7 @@ interface FontFace {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FontFace/load)
      */
     load(): Promise<FontFace>;
+    readonly [Symbol.toStringTag]: "FontFace";
 }
 
 declare var FontFace: {
@@ -3728,6 +3792,7 @@ interface FontFaceSet extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof FontFaceSetEventMap>(type: K, listener: (this: FontFaceSet, ev: FontFaceSetEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "FontFaceSet";
 }
 
 declare var FontFaceSet: {
@@ -3747,6 +3812,7 @@ interface FontFaceSetLoadEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FontFaceSetLoadEvent/fontfaces)
      */
     readonly fontfaces: ReadonlyArray<FontFace>;
+    readonly [Symbol.toStringTag]: "FontFaceSetLoadEvent";
 }
 
 declare var FontFaceSetLoadEvent: {
@@ -3806,6 +3872,7 @@ interface FormData {
     set(name: string, value: string): void;
     set(name: string, blobValue: Blob, filename?: string): void;
     forEach(callbackfn: (value: FormDataEntryValue, key: string, parent: FormData) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "FormData";
 }
 
 declare var FormData: {
@@ -3826,6 +3893,7 @@ interface GPUError {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/GPUError/message)
      */
     readonly message: string;
+    readonly [Symbol.toStringTag]: "GPUError";
 }
 
 declare var GPUError: {
@@ -3846,6 +3914,7 @@ interface GPUPipelineError extends DOMException {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/GPUPipelineError/reason)
      */
     readonly reason: GPUPipelineErrorReason;
+    readonly [Symbol.toStringTag]: "GPUPipelineError";
 }
 
 declare var GPUPipelineError: {
@@ -3903,6 +3972,7 @@ interface Headers {
      */
     set(name: string, value: string): void;
     forEach(callbackfn: (value: string, key: string, parent: Headers) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "Headers";
 }
 
 declare var Headers: {
@@ -3976,6 +4046,7 @@ interface IDBCursor {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBCursor/update)
      */
     update(value: any): IDBRequest<IDBValidKey>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var IDBCursor: {
@@ -3995,6 +4066,7 @@ interface IDBCursorWithValue extends IDBCursor {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBCursorWithValue/value)
      */
     readonly value: any;
+    readonly [Symbol.toStringTag]: "IDBCursorWithValue";
 }
 
 declare var IDBCursorWithValue: {
@@ -4068,6 +4140,7 @@ interface IDBDatabase extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBDatabaseEventMap>(type: K, listener: (this: IDBDatabase, ev: IDBDatabaseEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "IDBDatabase";
 }
 
 declare var IDBDatabase: {
@@ -4105,6 +4178,7 @@ interface IDBFactory {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBFactory/open)
      */
     open(name: string, version?: number): IDBOpenDBRequest;
+    readonly [Symbol.toStringTag]: "IDBFactory";
 }
 
 declare var IDBFactory: {
@@ -4190,6 +4264,7 @@ interface IDBIndex {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBIndex/openKeyCursor)
      */
     openKeyCursor(query?: IDBValidKey | IDBKeyRange | null, direction?: IDBCursorDirection): IDBRequest<IDBCursor | null>;
+    readonly [Symbol.toStringTag]: "IDBIndex";
 }
 
 declare var IDBIndex: {
@@ -4233,6 +4308,7 @@ interface IDBKeyRange {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBKeyRange/includes)
      */
     includes(key: any): boolean;
+    readonly [Symbol.toStringTag]: "IDBKeyRange";
 }
 
 declare var IDBKeyRange: {
@@ -4384,6 +4460,7 @@ interface IDBObjectStore {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBObjectStore/put)
      */
     put(value: any, key?: IDBValidKey): IDBRequest<IDBValidKey>;
+    readonly [Symbol.toStringTag]: "IDBObjectStore";
 }
 
 declare var IDBObjectStore: {
@@ -4410,6 +4487,7 @@ interface IDBOpenDBRequest extends IDBRequest<IDBDatabase> {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBOpenDBRequestEventMap>(type: K, listener: (this: IDBOpenDBRequest, ev: IDBOpenDBRequestEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "IDBOpenDBRequest";
 }
 
 declare var IDBOpenDBRequest: {
@@ -4466,6 +4544,7 @@ interface IDBRequest<T = any> extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBRequestEventMap>(type: K, listener: (this: IDBRequest<T>, ev: IDBRequestEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var IDBRequest: {
@@ -4543,6 +4622,7 @@ interface IDBTransaction extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBTransactionEventMap>(type: K, listener: (this: IDBTransaction, ev: IDBTransactionEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "IDBTransaction";
 }
 
 declare var IDBTransaction: {
@@ -4568,6 +4648,7 @@ interface IDBVersionChangeEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBVersionChangeEvent/oldVersion)
      */
     readonly oldVersion: number;
+    readonly [Symbol.toStringTag]: "IDBVersionChangeEvent";
 }
 
 declare var IDBVersionChangeEvent: {
@@ -4599,6 +4680,7 @@ interface ImageBitmap {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageBitmap/close)
      */
     close(): void;
+    readonly [Symbol.toStringTag]: "ImageBitmap";
 }
 
 declare var ImageBitmap: {
@@ -4618,6 +4700,7 @@ interface ImageBitmapRenderingContext {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageBitmapRenderingContext/transferFromImageBitmap)
      */
     transferFromImageBitmap(bitmap: ImageBitmap | null): void;
+    readonly [Symbol.toStringTag]: "ImageBitmapRenderingContext";
 }
 
 declare var ImageBitmapRenderingContext: {
@@ -4655,6 +4738,7 @@ interface ImageData {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageData/width)
      */
     readonly width: number;
+    readonly [Symbol.toStringTag]: "ImageData";
 }
 
 declare var ImageData: {
@@ -4696,6 +4780,7 @@ interface Lock {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Lock/name)
      */
     readonly name: string;
+    readonly [Symbol.toStringTag]: "Lock";
 }
 
 declare var Lock: {
@@ -4723,6 +4808,7 @@ interface LockManager {
      */
     request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
     request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    readonly [Symbol.toStringTag]: "LockManager";
 }
 
 declare var LockManager: {
@@ -4748,6 +4834,7 @@ interface MediaCapabilities {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaCapabilities/encodingInfo)
      */
     encodingInfo(configuration: MediaEncodingConfiguration): Promise<MediaCapabilitiesEncodingInfo>;
+    readonly [Symbol.toStringTag]: "MediaCapabilities";
 }
 
 declare var MediaCapabilities: {
@@ -4773,6 +4860,7 @@ interface MessageChannel {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MessageChannel/port2)
      */
     readonly port2: MessagePort;
+    readonly [Symbol.toStringTag]: "MessageChannel";
 }
 
 declare var MessageChannel: {
@@ -4818,6 +4906,7 @@ interface MessageEvent<T = any> extends Event {
     readonly source: MessageEventSource | null;
     /** @deprecated */
     initMessageEvent(type: string, bubbles?: boolean, cancelable?: boolean, data?: any, origin?: string, lastEventId?: string, source?: MessageEventSource | null, ports?: MessagePort[]): void;
+    readonly [Symbol.toStringTag]: "MessageEvent";
 }
 
 declare var MessageEvent: {
@@ -4875,6 +4964,7 @@ interface MessagePort extends EventTarget, MessageEventTarget<MessagePort> {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MessagePortEventMap>(type: K, listener: (this: MessagePort, ev: MessagePortEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MessagePort";
 }
 
 declare var MessagePort: {
@@ -4913,6 +5003,7 @@ interface NavigationPreloadManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/NavigationPreloadManager/setHeaderValue)
      */
     setHeaderValue(value: string): Promise<void>;
+    readonly [Symbol.toStringTag]: "NavigationPreloadManager";
 }
 
 declare var NavigationPreloadManager: {
@@ -5057,6 +5148,7 @@ interface Notification extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof NotificationEventMap>(type: K, listener: (this: Notification, ev: NotificationEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "Notification";
 }
 
 declare var Notification: {
@@ -5282,6 +5374,7 @@ interface OffscreenCanvas extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof OffscreenCanvasEventMap>(type: K, listener: (this: OffscreenCanvas, ev: OffscreenCanvasEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "OffscreenCanvas";
 }
 
 declare var OffscreenCanvas: {
@@ -5297,6 +5390,7 @@ declare var OffscreenCanvas: {
 interface OffscreenCanvasRenderingContext2D extends CanvasCompositing, CanvasDrawImage, CanvasDrawPath, CanvasFillStrokeStyles, CanvasFilters, CanvasImageData, CanvasImageSmoothing, CanvasPath, CanvasPathDrawingStyles, CanvasRect, CanvasShadowStyles, CanvasState, CanvasText, CanvasTextDrawingStyles, CanvasTransform {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/canvas) */
     readonly canvas: OffscreenCanvas;
+    readonly [Symbol.toStringTag]: "OffscreenCanvasRenderingContext2D";
 }
 
 declare var OffscreenCanvasRenderingContext2D: {
@@ -5316,6 +5410,7 @@ interface Path2D extends CanvasPath {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Path2D/addPath)
      */
     addPath(path: Path2D, transform?: DOMMatrix2DInit): void;
+    readonly [Symbol.toStringTag]: "Path2D";
 }
 
 declare var Path2D: {
@@ -5411,6 +5506,7 @@ interface Performance extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof PerformanceEventMap>(type: K, listener: (this: Performance, ev: PerformanceEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "Performance";
 }
 
 declare var Performance: {
@@ -5454,6 +5550,7 @@ interface PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceEntry/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var PerformanceEntry: {
@@ -5473,6 +5570,7 @@ interface PerformanceMark extends PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceMark/detail)
      */
     readonly detail: any;
+    readonly [Symbol.toStringTag]: "PerformanceMark";
 }
 
 declare var PerformanceMark: {
@@ -5492,6 +5590,7 @@ interface PerformanceMeasure extends PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceMeasure/detail)
      */
     readonly detail: any;
+    readonly [Symbol.toStringTag]: "PerformanceMeasure";
 }
 
 declare var PerformanceMeasure: {
@@ -5523,6 +5622,7 @@ interface PerformanceObserver {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceObserver/takeRecords)
      */
     takeRecords(): PerformanceEntryList;
+    readonly [Symbol.toStringTag]: "PerformanceObserver";
 }
 
 declare var PerformanceObserver: {
@@ -5560,6 +5660,7 @@ interface PerformanceObserverEntryList {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceObserverEntryList/getEntriesByType)
      */
     getEntriesByType(type: string): PerformanceEntryList;
+    readonly [Symbol.toStringTag]: "PerformanceObserverEntryList";
 }
 
 declare var PerformanceObserverEntryList: {
@@ -5693,6 +5794,7 @@ interface PerformanceResourceTiming extends PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceResourceTiming/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "PerformanceResourceTiming";
 }
 
 declare var PerformanceResourceTiming: {
@@ -5730,6 +5832,7 @@ interface PerformanceServerTiming {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceServerTiming/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "PerformanceServerTiming";
 }
 
 declare var PerformanceServerTiming: {
@@ -5765,6 +5868,7 @@ interface PermissionStatus extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof PermissionStatusEventMap>(type: K, listener: (this: PermissionStatus, ev: PermissionStatusEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "PermissionStatus";
 }
 
 declare var PermissionStatus: {
@@ -5784,6 +5888,7 @@ interface Permissions {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Permissions/query)
      */
     query(permissionDesc: PermissionDescriptor): Promise<PermissionStatus>;
+    readonly [Symbol.toStringTag]: "Permissions";
 }
 
 declare var Permissions: {
@@ -5816,6 +5921,7 @@ interface ProgressEvent<T extends EventTarget = EventTarget> extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ProgressEvent/total)
      */
     readonly total: number;
+    readonly [Symbol.toStringTag]: "ProgressEvent";
 }
 
 declare var ProgressEvent: {
@@ -5841,6 +5947,7 @@ interface PromiseRejectionEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PromiseRejectionEvent/reason)
      */
     readonly reason: any;
+    readonly [Symbol.toStringTag]: "PromiseRejectionEvent";
 }
 
 declare var PromiseRejectionEvent: {
@@ -5873,6 +5980,7 @@ interface PushManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushManager/subscribe)
      */
     subscribe(options?: PushSubscriptionOptionsInit): Promise<PushSubscription>;
+    readonly [Symbol.toStringTag]: "PushManager";
 }
 
 declare var PushManager: {
@@ -5929,6 +6037,7 @@ interface PushSubscription {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushSubscription/unsubscribe)
      */
     unsubscribe(): Promise<boolean>;
+    readonly [Symbol.toStringTag]: "PushSubscription";
 }
 
 declare var PushSubscription: {
@@ -5955,6 +6064,7 @@ interface PushSubscriptionOptions {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushSubscriptionOptions/userVisibleOnly)
      */
     readonly userVisibleOnly: boolean;
+    readonly [Symbol.toStringTag]: "PushSubscriptionOptions";
 }
 
 declare var PushSubscriptionOptions: {
@@ -5998,6 +6108,7 @@ interface ReadableByteStreamController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableByteStreamController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "ReadableByteStreamController";
 }
 
 declare var ReadableByteStreamController: {
@@ -6049,6 +6160,7 @@ interface ReadableStream<R = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStream/tee)
      */
     tee(): [ReadableStream<R>, ReadableStream<R>];
+    readonly [Symbol.toStringTag]: "ReadableStream";
 }
 
 declare var ReadableStream: {
@@ -6076,6 +6188,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/releaseLock)
      */
     releaseLock(): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamBYOBReader";
 }
 
 declare var ReadableStreamBYOBReader: {
@@ -6107,6 +6220,7 @@ interface ReadableStreamBYOBRequest {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBRequest/respondWithNewView)
      */
     respondWithNewView(view: ArrayBufferView<ArrayBuffer>): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamBYOBRequest";
 }
 
 declare var ReadableStreamBYOBRequest: {
@@ -6144,6 +6258,7 @@ interface ReadableStreamDefaultController<R = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamDefaultController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamDefaultController";
 }
 
 declare var ReadableStreamDefaultController: {
@@ -6169,6 +6284,7 @@ interface ReadableStreamDefaultReader<R = any> extends ReadableStreamGenericRead
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamDefaultReader/releaseLock)
      */
     releaseLock(): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamDefaultReader";
 }
 
 declare var ReadableStreamDefaultReader: {
@@ -6207,6 +6323,7 @@ interface ReportingObserver {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReportingObserver/takeRecords)
      */
     takeRecords(): ReportList;
+    readonly [Symbol.toStringTag]: "ReportingObserver";
 }
 
 declare var ReportingObserver: {
@@ -6304,6 +6421,7 @@ interface Request extends Body {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Request/clone)
      */
     clone(): Request;
+    readonly [Symbol.toStringTag]: "Request";
 }
 
 declare var Request: {
@@ -6365,6 +6483,7 @@ interface Response extends Body {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Response/clone)
      */
     clone(): Response;
+    readonly [Symbol.toStringTag]: "Response";
 }
 
 declare var Response: {
@@ -6408,6 +6527,7 @@ interface Scheduler {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Scheduler/yield)
      */
     yield(): Promise<void>;
+    readonly [Symbol.toStringTag]: "Scheduler";
 }
 
 declare var Scheduler: {
@@ -6493,6 +6613,7 @@ interface SecurityPolicyViolationEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SecurityPolicyViolationEvent/violatedDirective)
      */
     readonly violatedDirective: string;
+    readonly [Symbol.toStringTag]: "SecurityPolicyViolationEvent";
 }
 
 declare var SecurityPolicyViolationEvent: {
@@ -6536,6 +6657,7 @@ interface ServiceWorker extends EventTarget, AbstractWorker {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ServiceWorkerEventMap>(type: K, listener: (this: ServiceWorker, ev: ServiceWorkerEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ServiceWorker";
 }
 
 declare var ServiceWorker: {
@@ -6602,6 +6724,7 @@ interface ServiceWorkerContainer extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ServiceWorkerContainerEventMap>(type: K, listener: (this: ServiceWorkerContainer, ev: ServiceWorkerContainerEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ServiceWorkerContainer";
 }
 
 declare var ServiceWorkerContainer: {
@@ -6686,6 +6809,7 @@ interface ServiceWorkerRegistration extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ServiceWorkerRegistrationEventMap>(type: K, listener: (this: ServiceWorkerRegistration, ev: ServiceWorkerRegistrationEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ServiceWorkerRegistration";
 }
 
 declare var ServiceWorkerRegistration: {
@@ -6721,6 +6845,7 @@ interface SharedWorkerGlobalScope extends WorkerGlobalScope {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SharedWorkerGlobalScopeEventMap>(type: K, listener: (this: SharedWorkerGlobalScope, ev: SharedWorkerGlobalScopeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SharedWorkerGlobalScope";
 }
 
 declare var SharedWorkerGlobalScope: {
@@ -6753,6 +6878,7 @@ interface StorageManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/StorageManager/persisted)
      */
     persisted(): Promise<boolean>;
+    readonly [Symbol.toStringTag]: "StorageManager";
 }
 
 declare var StorageManager: {
@@ -6791,6 +6917,7 @@ interface StylePropertyMapReadOnly {
      */
     has(property: string): boolean;
     forEach(callbackfn: (value: CSSStyleValue[], key: string, parent: StylePropertyMapReadOnly) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "StylePropertyMapReadOnly";
 }
 
 declare var StylePropertyMapReadOnly: {
@@ -6883,6 +7010,7 @@ interface SubtleCrypto {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/wrapKey)
      */
     wrapKey(format: KeyFormat, key: CryptoKey, wrappingKey: CryptoKey, wrapAlgorithm: AlgorithmIdentifier | RsaOaepParams | AesCtrParams | AesCbcParams | AesGcmParams): Promise<ArrayBuffer>;
+    readonly [Symbol.toStringTag]: "SubtleCrypto";
 }
 
 declare var SubtleCrypto: {
@@ -6902,6 +7030,7 @@ interface TaskController extends AbortController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TaskController/setPriority)
      */
     setPriority(priority: TaskPriority): void;
+    readonly [Symbol.toStringTag]: "TaskController";
 }
 
 declare var TaskController: {
@@ -6921,6 +7050,7 @@ interface TaskPriorityChangeEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TaskPriorityChangeEvent/previousPriority)
      */
     readonly previousPriority: TaskPriority;
+    readonly [Symbol.toStringTag]: "TaskPriorityChangeEvent";
 }
 
 declare var TaskPriorityChangeEvent: {
@@ -6950,6 +7080,7 @@ interface TaskSignal extends AbortSignal {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof TaskSignalEventMap>(type: K, listener: (this: TaskSignal, ev: TaskSignalEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "TaskSignal";
 }
 
 declare var TaskSignal: {
@@ -6975,6 +7106,7 @@ interface TextDecoder extends TextDecoderCommon {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextDecoder/decode)
      */
     decode(input?: AllowSharedBufferSource, options?: TextDecodeOptions): string;
+    readonly [Symbol.toStringTag]: "TextDecoder";
 }
 
 declare var TextDecoder: {
@@ -7011,6 +7143,7 @@ interface TextDecoderCommon {
 interface TextDecoderStream extends GenericTransformStream, TextDecoderCommon {
     readonly readable: ReadableStream<string>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "TextDecoderStream";
 }
 
 declare var TextDecoderStream: {
@@ -7036,6 +7169,7 @@ interface TextEncoder extends TextEncoderCommon {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextEncoder/encodeInto)
      */
     encodeInto(source: string, destination: Uint8Array<ArrayBufferLike>): TextEncoderEncodeIntoResult;
+    readonly [Symbol.toStringTag]: "TextEncoder";
 }
 
 declare var TextEncoder: {
@@ -7060,6 +7194,7 @@ interface TextEncoderCommon {
 interface TextEncoderStream extends GenericTransformStream, TextEncoderCommon {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<string>;
+    readonly [Symbol.toStringTag]: "TextEncoderStream";
 }
 
 declare var TextEncoderStream: {
@@ -7145,6 +7280,7 @@ interface TextMetrics {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextMetrics/width)
      */
     readonly width: number;
+    readonly [Symbol.toStringTag]: "TextMetrics";
 }
 
 declare var TextMetrics: {
@@ -7170,6 +7306,7 @@ interface TransformStream<I = any, O = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TransformStream/writable)
      */
     readonly writable: WritableStream<I>;
+    readonly [Symbol.toStringTag]: "TransformStream";
 }
 
 declare var TransformStream: {
@@ -7207,6 +7344,7 @@ interface TransformStreamDefaultController<O = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TransformStreamDefaultController/terminate)
      */
     terminate(): void;
+    readonly [Symbol.toStringTag]: "TransformStreamDefaultController";
 }
 
 declare var TransformStreamDefaultController: {
@@ -7299,6 +7437,7 @@ interface URL {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/URL/toJSON)
      */
     toJSON(): string;
+    readonly [Symbol.toStringTag]: "URL";
 }
 
 declare var URL: {
@@ -7402,6 +7541,7 @@ interface URLPattern {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/URLPattern/test)
      */
     test(input?: URLPatternInput, baseURL?: string | URL): boolean;
+    readonly [Symbol.toStringTag]: "URLPattern";
 }
 
 declare var URLPattern: {
@@ -7466,6 +7606,7 @@ interface URLSearchParams {
     sort(): void;
     toString(): string;
     forEach(callbackfn: (value: string, key: string, parent: URLSearchParams) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "URLSearchParams";
 }
 
 declare var URLSearchParams: {
@@ -7728,6 +7869,7 @@ interface WEBGL_multi_draw {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext)
  */
 interface WebGL2RenderingContext extends WebGL2RenderingContextBase, WebGL2RenderingContextOverloads, WebGLRenderingContextBase {
+    readonly [Symbol.toStringTag]: "WebGL2RenderingContext";
 }
 
 declare var WebGL2RenderingContext: {
@@ -8820,6 +8962,7 @@ interface WebGLActiveInfo {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLActiveInfo/type)
      */
     readonly type: GLenum;
+    readonly [Symbol.toStringTag]: "WebGLActiveInfo";
 }
 
 declare var WebGLActiveInfo: {
@@ -8833,6 +8976,7 @@ declare var WebGLActiveInfo: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLBuffer)
  */
 interface WebGLBuffer {
+    readonly [Symbol.toStringTag]: "WebGLBuffer";
 }
 
 declare var WebGLBuffer: {
@@ -8852,6 +8996,7 @@ interface WebGLContextEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLContextEvent/statusMessage)
      */
     readonly statusMessage: string;
+    readonly [Symbol.toStringTag]: "WebGLContextEvent";
 }
 
 declare var WebGLContextEvent: {
@@ -8865,6 +9010,7 @@ declare var WebGLContextEvent: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLFramebuffer)
  */
 interface WebGLFramebuffer {
+    readonly [Symbol.toStringTag]: "WebGLFramebuffer";
 }
 
 declare var WebGLFramebuffer: {
@@ -8878,6 +9024,7 @@ declare var WebGLFramebuffer: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLProgram)
  */
 interface WebGLProgram {
+    readonly [Symbol.toStringTag]: "WebGLProgram";
 }
 
 declare var WebGLProgram: {
@@ -8891,6 +9038,7 @@ declare var WebGLProgram: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLQuery)
  */
 interface WebGLQuery {
+    readonly [Symbol.toStringTag]: "WebGLQuery";
 }
 
 declare var WebGLQuery: {
@@ -8904,6 +9052,7 @@ declare var WebGLQuery: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderbuffer)
  */
 interface WebGLRenderbuffer {
+    readonly [Symbol.toStringTag]: "WebGLRenderbuffer";
 }
 
 declare var WebGLRenderbuffer: {
@@ -8917,6 +9066,7 @@ declare var WebGLRenderbuffer: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext)
  */
 interface WebGLRenderingContext extends WebGLRenderingContextBase, WebGLRenderingContextOverloads {
+    readonly [Symbol.toStringTag]: "WebGLRenderingContext";
 }
 
 declare var WebGLRenderingContext: {
@@ -9847,6 +9997,7 @@ interface WebGLRenderingContextOverloads {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLSampler)
  */
 interface WebGLSampler {
+    readonly [Symbol.toStringTag]: "WebGLSampler";
 }
 
 declare var WebGLSampler: {
@@ -9860,6 +10011,7 @@ declare var WebGLSampler: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLShader)
  */
 interface WebGLShader {
+    readonly [Symbol.toStringTag]: "WebGLShader";
 }
 
 declare var WebGLShader: {
@@ -9891,6 +10043,7 @@ interface WebGLShaderPrecisionFormat {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLShaderPrecisionFormat/rangeMin)
      */
     readonly rangeMin: GLint;
+    readonly [Symbol.toStringTag]: "WebGLShaderPrecisionFormat";
 }
 
 declare var WebGLShaderPrecisionFormat: {
@@ -9904,6 +10057,7 @@ declare var WebGLShaderPrecisionFormat: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLSync)
  */
 interface WebGLSync {
+    readonly [Symbol.toStringTag]: "WebGLSync";
 }
 
 declare var WebGLSync: {
@@ -9917,6 +10071,7 @@ declare var WebGLSync: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLTexture)
  */
 interface WebGLTexture {
+    readonly [Symbol.toStringTag]: "WebGLTexture";
 }
 
 declare var WebGLTexture: {
@@ -9930,6 +10085,7 @@ declare var WebGLTexture: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLTransformFeedback)
  */
 interface WebGLTransformFeedback {
+    readonly [Symbol.toStringTag]: "WebGLTransformFeedback";
 }
 
 declare var WebGLTransformFeedback: {
@@ -9943,6 +10099,7 @@ declare var WebGLTransformFeedback: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLUniformLocation)
  */
 interface WebGLUniformLocation {
+    readonly [Symbol.toStringTag]: "WebGLUniformLocation";
 }
 
 declare var WebGLUniformLocation: {
@@ -9956,6 +10113,7 @@ declare var WebGLUniformLocation: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLVertexArrayObject)
  */
 interface WebGLVertexArrayObject {
+    readonly [Symbol.toStringTag]: "WebGLVertexArrayObject";
 }
 
 declare var WebGLVertexArrayObject: {
@@ -10044,6 +10202,7 @@ interface WebSocket extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof WebSocketEventMap>(type: K, listener: (this: WebSocket, ev: WebSocketEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "WebSocket";
 }
 
 declare var WebSocket: {
@@ -10110,6 +10269,7 @@ interface WebTransport {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransport/createUnidirectionalStream)
      */
     createUnidirectionalStream(options?: WebTransportSendStreamOptions): Promise<WritableStream>;
+    readonly [Symbol.toStringTag]: "WebTransport";
 }
 
 declare var WebTransport: {
@@ -10136,6 +10296,7 @@ interface WebTransportBidirectionalStream {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransportBidirectionalStream/writable)
      */
     readonly writable: WritableStream;
+    readonly [Symbol.toStringTag]: "WebTransportBidirectionalStream";
 }
 
 declare var WebTransportBidirectionalStream: {
@@ -10188,6 +10349,7 @@ interface WebTransportDatagramDuplexStream {
     readonly readable: ReadableStream;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransportDatagramDuplexStream/writable) */
     readonly writable: WritableStream;
+    readonly [Symbol.toStringTag]: "WebTransportDatagramDuplexStream";
 }
 
 declare var WebTransportDatagramDuplexStream: {
@@ -10214,6 +10376,7 @@ interface WebTransportError extends DOMException {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransportError/streamErrorCode)
      */
     readonly streamErrorCode: number | null;
+    readonly [Symbol.toStringTag]: "WebTransportError";
 }
 
 declare var WebTransportError: {
@@ -10293,6 +10456,7 @@ interface Worker extends EventTarget, AbstractWorker, MessageEventTarget<Worker>
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof WorkerEventMap>(type: K, listener: (this: Worker, ev: WorkerEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "Worker";
 }
 
 declare var Worker: {
@@ -10355,6 +10519,7 @@ interface WorkerGlobalScope extends EventTarget, FontFaceSource, WindowOrWorkerG
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof WorkerGlobalScopeEventMap>(type: K, listener: (this: WorkerGlobalScope, ev: WorkerGlobalScopeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var WorkerGlobalScope: {
@@ -10423,6 +10588,7 @@ interface WorkerLocation {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WorkerLocation/search)
      */
     readonly search: string;
+    readonly [Symbol.toStringTag]: "WorkerLocation";
 }
 
 declare var WorkerLocation: {
@@ -10455,6 +10621,7 @@ interface WorkerNavigator extends NavigatorBadge, NavigatorConcurrentHardware, N
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WorkerNavigator/serviceWorker)
      */
     readonly serviceWorker: ServiceWorkerContainer;
+    readonly [Symbol.toStringTag]: "WorkerNavigator";
 }
 
 declare var WorkerNavigator: {
@@ -10492,6 +10659,7 @@ interface WritableStream<W = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStream/getWriter)
      */
     getWriter(): WritableStreamDefaultWriter<W>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var WritableStream: {
@@ -10517,6 +10685,7 @@ interface WritableStreamDefaultController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStreamDefaultController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "WritableStreamDefaultController";
 }
 
 declare var WritableStreamDefaultController: {
@@ -10572,6 +10741,7 @@ interface WritableStreamDefaultWriter<W = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStreamDefaultWriter/write)
      */
     write(chunk?: W): Promise<void>;
+    readonly [Symbol.toStringTag]: "WritableStreamDefaultWriter";
 }
 
 declare var WritableStreamDefaultWriter: {
@@ -10703,6 +10873,7 @@ interface XMLHttpRequest extends XMLHttpRequestEventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof XMLHttpRequestEventMap>(type: K, listener: (this: XMLHttpRequest, ev: XMLHttpRequestEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "XMLHttpRequest";
 }
 
 declare var XMLHttpRequest: {
@@ -10742,6 +10913,7 @@ interface XMLHttpRequestEventTarget extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof XMLHttpRequestEventTargetEventMap>(type: K, listener: (this: XMLHttpRequestEventTarget, ev: XMLHttpRequestEventTargetEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var XMLHttpRequestEventTarget: {
@@ -10759,6 +10931,7 @@ interface XMLHttpRequestUpload extends XMLHttpRequestEventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof XMLHttpRequestEventTargetEventMap>(type: K, listener: (this: XMLHttpRequestUpload, ev: XMLHttpRequestEventTargetEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "XMLHttpRequestUpload";
 }
 
 declare var XMLHttpRequestUpload: {
@@ -10768,6 +10941,7 @@ declare var XMLHttpRequestUpload: {
 
 declare namespace WebAssembly {
     interface CompileError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.CompileError";
     }
 
     var CompileError: {
@@ -10800,6 +10974,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Exception/is)
          */
         is(exceptionTag: Tag): boolean;
+        readonly [Symbol.toStringTag]: "WebAssembly.Exception";
     }
 
     var Exception: {
@@ -10815,6 +10990,7 @@ declare namespace WebAssembly {
     interface Global<T extends ValueType = ValueType> {
         value: ValueTypeMap[T];
         valueOf(): ValueTypeMap[T];
+        readonly [Symbol.toStringTag]: "WebAssembly.Global";
     }
 
     var Global: {
@@ -10834,6 +11010,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Instance/exports)
          */
         readonly exports: Exports;
+        readonly [Symbol.toStringTag]: "WebAssembly.Instance";
     }
 
     var Instance: {
@@ -10842,6 +11019,7 @@ declare namespace WebAssembly {
     };
 
     interface LinkError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.LinkError";
     }
 
     var LinkError: {
@@ -10868,6 +11046,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Memory/grow)
          */
         grow(delta: AddressValue): AddressValue;
+        readonly [Symbol.toStringTag]: "WebAssembly.Memory";
     }
 
     var Memory: {
@@ -10881,6 +11060,7 @@ declare namespace WebAssembly {
      * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Module)
      */
     interface Module {
+        readonly [Symbol.toStringTag]: "WebAssembly.Module";
     }
 
     var Module: {
@@ -10907,6 +11087,7 @@ declare namespace WebAssembly {
     };
 
     interface RuntimeError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.RuntimeError";
     }
 
     var RuntimeError: {
@@ -10945,6 +11126,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Table/set)
          */
         set(index: AddressValue, value?: any): void;
+        readonly [Symbol.toStringTag]: "WebAssembly.Table";
     }
 
     var Table: {
@@ -10958,6 +11140,7 @@ declare namespace WebAssembly {
      * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Tag)
      */
     interface Tag {
+        readonly [Symbol.toStringTag]: "WebAssembly.Tag";
     }
 
     var Tag: {
@@ -11530,6 +11713,7 @@ interface FontFaceSet extends Set<FontFace> {
 
 interface FormDataIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): FormDataIterator<T>;
+    readonly [Symbol.toStringTag]: "FormData Iterator";
 }
 
 interface FormData {
@@ -11544,6 +11728,7 @@ interface FormData {
 
 interface HeadersIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): HeadersIterator<T>;
+    readonly [Symbol.toStringTag]: "Headers Iterator";
 }
 
 interface Headers {
@@ -11581,6 +11766,7 @@ interface MessageEvent<T = any> {
 
 interface StylePropertyMapReadOnlyIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): StylePropertyMapReadOnlyIterator<T>;
+    readonly [Symbol.toStringTag]: "StylePropertyMapReadOnly Iterator";
 }
 
 interface StylePropertyMapReadOnly {
@@ -11623,6 +11809,7 @@ interface SubtleCrypto {
 
 interface URLSearchParamsIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): URLSearchParamsIterator<T>;
+    readonly [Symbol.toStringTag]: "URLSearchParams Iterator";
 }
 
 interface URLSearchParams {
@@ -11784,6 +11971,7 @@ interface WebGLRenderingContextOverloads {
 
 interface FileSystemDirectoryHandleAsyncIterator<T> extends AsyncIteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.asyncIterator](): FileSystemDirectoryHandleAsyncIterator<T>;
+    readonly [Symbol.toStringTag]: "FileSystemDirectoryHandle AsyncIterator";
 }
 
 interface FileSystemDirectoryHandle {
@@ -11795,6 +11983,7 @@ interface FileSystemDirectoryHandle {
 
 interface ReadableStreamAsyncIterator<T> extends AsyncIteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.asyncIterator](): ReadableStreamAsyncIterator<T>;
+    readonly [Symbol.toStringTag]: "ReadableStream AsyncIterator";
 }
 
 interface ReadableStream<R = any> {
diff --git a/baselines/webworker.generated.d.ts b/baselines/webworker.generated.d.ts
index 9a907905f..d728a8f39 100644
--- a/baselines/webworker.generated.d.ts
+++ b/baselines/webworker.generated.d.ts
@@ -1164,6 +1164,7 @@ interface AbortController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AbortController/abort)
      */
     abort(reason?: any): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AbortController: {
@@ -1205,6 +1206,7 @@ interface AbortSignal extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AbortSignalEventMap>(type: K, listener: (this: AbortSignal, ev: AbortSignalEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var AbortSignal: {
@@ -1316,6 +1318,7 @@ interface AudioData {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/AudioData/copyTo)
      */
     copyTo(destination: AllowSharedBufferSource, options: AudioDataCopyToOptions): void;
+    readonly [Symbol.toStringTag]: "AudioData";
 }
 
 declare var AudioData: {
@@ -1382,6 +1385,7 @@ interface AudioDecoder extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AudioDecoderEventMap>(type: K, listener: (this: AudioDecoder, ev: AudioDecoderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "AudioDecoder";
 }
 
 declare var AudioDecoder: {
@@ -1454,6 +1458,7 @@ interface AudioEncoder extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof AudioEncoderEventMap>(type: K, listener: (this: AudioEncoder, ev: AudioEncoderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "AudioEncoder";
 }
 
 declare var AudioEncoder: {
@@ -1515,6 +1520,7 @@ interface Blob {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Blob/text)
      */
     text(): Promise<string>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Blob: {
@@ -1578,6 +1584,7 @@ interface BroadcastChannel extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof BroadcastChannelEventMap>(type: K, listener: (this: BroadcastChannel, ev: BroadcastChannelEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "BroadcastChannel";
 }
 
 declare var BroadcastChannel: {
@@ -1599,6 +1606,7 @@ interface ByteLengthQueuingStrategy extends QueuingStrategy<ArrayBufferView> {
     readonly highWaterMark: number;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/ByteLengthQueuingStrategy/size) */
     readonly size: QueuingStrategySize<ArrayBufferView>;
+    readonly [Symbol.toStringTag]: "ByteLengthQueuingStrategy";
 }
 
 declare var ByteLengthQueuingStrategy: {
@@ -1612,6 +1620,7 @@ declare var ByteLengthQueuingStrategy: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSImageValue)
  */
 interface CSSImageValue extends CSSStyleValue {
+    readonly [Symbol.toStringTag]: "CSSImageValue";
 }
 
 declare var CSSImageValue: {
@@ -1631,6 +1640,7 @@ interface CSSKeywordValue extends CSSStyleValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSKeywordValue/value)
      */
     value: string;
+    readonly [Symbol.toStringTag]: "CSSKeywordValue";
 }
 
 declare var CSSKeywordValue: {
@@ -1642,6 +1652,7 @@ interface CSSMathClamp extends CSSMathValue {
     readonly lower: CSSNumericValue;
     readonly upper: CSSNumericValue;
     readonly value: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSMathClamp";
 }
 
 declare var CSSMathClamp: {
@@ -1661,6 +1672,7 @@ interface CSSMathInvert extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathInvert/value)
      */
     readonly value: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSMathInvert";
 }
 
 declare var CSSMathInvert: {
@@ -1680,6 +1692,7 @@ interface CSSMathMax extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathMax/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathMax";
 }
 
 declare var CSSMathMax: {
@@ -1699,6 +1712,7 @@ interface CSSMathMin extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathMin/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathMin";
 }
 
 declare var CSSMathMin: {
@@ -1718,6 +1732,7 @@ interface CSSMathNegate extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathNegate/value)
      */
     readonly value: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSMathNegate";
 }
 
 declare var CSSMathNegate: {
@@ -1737,6 +1752,7 @@ interface CSSMathProduct extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathProduct/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathProduct";
 }
 
 declare var CSSMathProduct: {
@@ -1756,6 +1772,7 @@ interface CSSMathSum extends CSSMathValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathSum/values)
      */
     readonly values: CSSNumericArray;
+    readonly [Symbol.toStringTag]: "CSSMathSum";
 }
 
 declare var CSSMathSum: {
@@ -1775,6 +1792,7 @@ interface CSSMathValue extends CSSNumericValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMathValue/operator)
      */
     readonly operator: CSSMathOperator;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSMathValue: {
@@ -1794,6 +1812,7 @@ interface CSSMatrixComponent extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSMatrixComponent/matrix)
      */
     matrix: DOMMatrix;
+    readonly [Symbol.toStringTag]: "CSSMatrixComponent";
 }
 
 declare var CSSMatrixComponent: {
@@ -1815,6 +1834,7 @@ interface CSSNumericArray {
     readonly length: number;
     forEach(callbackfn: (value: CSSNumericValue, key: number, parent: CSSNumericArray) => void, thisArg?: any): void;
     [index: number]: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSNumericArray";
 }
 
 declare var CSSNumericArray: {
@@ -1888,6 +1908,7 @@ interface CSSNumericValue extends CSSStyleValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSNumericValue/type)
      */
     type(): CSSNumericType;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSNumericValue: {
@@ -1907,6 +1928,7 @@ interface CSSPerspective extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSPerspective/length)
      */
     length: CSSPerspectiveValue;
+    readonly [Symbol.toStringTag]: "CSSPerspective";
 }
 
 declare var CSSPerspective: {
@@ -1944,6 +1966,7 @@ interface CSSRotate extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSRotate/z)
      */
     z: CSSNumberish;
+    readonly [Symbol.toStringTag]: "CSSRotate";
 }
 
 declare var CSSRotate: {
@@ -1976,6 +1999,7 @@ interface CSSScale extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSScale/z)
      */
     z: CSSNumberish;
+    readonly [Symbol.toStringTag]: "CSSScale";
 }
 
 declare var CSSScale: {
@@ -2001,6 +2025,7 @@ interface CSSSkew extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSSkew/ay)
      */
     ay: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSSkew";
 }
 
 declare var CSSSkew: {
@@ -2020,6 +2045,7 @@ interface CSSSkewX extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSSkewX/ax)
      */
     ax: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSSkewX";
 }
 
 declare var CSSSkewX: {
@@ -2039,6 +2065,7 @@ interface CSSSkewY extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSSkewY/ay)
      */
     ay: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSSkewY";
 }
 
 declare var CSSSkewY: {
@@ -2053,6 +2080,7 @@ declare var CSSSkewY: {
  */
 interface CSSStyleValue {
     toString(): string;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSStyleValue: {
@@ -2079,6 +2107,7 @@ interface CSSTransformComponent {
      */
     toMatrix(): DOMMatrix;
     toString(): string;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var CSSTransformComponent: {
@@ -2112,6 +2141,7 @@ interface CSSTransformValue extends CSSStyleValue {
     toMatrix(): DOMMatrix;
     forEach(callbackfn: (value: CSSTransformComponent, key: number, parent: CSSTransformValue) => void, thisArg?: any): void;
     [index: number]: CSSTransformComponent;
+    readonly [Symbol.toStringTag]: "CSSTransformValue";
 }
 
 declare var CSSTransformValue: {
@@ -2143,6 +2173,7 @@ interface CSSTranslate extends CSSTransformComponent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSTranslate/z)
      */
     z: CSSNumericValue;
+    readonly [Symbol.toStringTag]: "CSSTranslate";
 }
 
 declare var CSSTranslate: {
@@ -2168,6 +2199,7 @@ interface CSSUnitValue extends CSSNumericValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSUnitValue/value)
      */
     value: number;
+    readonly [Symbol.toStringTag]: "CSSUnitValue";
 }
 
 declare var CSSUnitValue: {
@@ -2189,6 +2221,7 @@ interface CSSUnparsedValue extends CSSStyleValue {
     readonly length: number;
     forEach(callbackfn: (value: CSSUnparsedSegment, key: number, parent: CSSUnparsedValue) => void, thisArg?: any): void;
     [index: number]: CSSUnparsedSegment;
+    readonly [Symbol.toStringTag]: "CSSUnparsedValue";
 }
 
 declare var CSSUnparsedValue: {
@@ -2214,6 +2247,7 @@ interface CSSVariableReferenceValue {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CSSVariableReferenceValue/variable)
      */
     variable: string;
+    readonly [Symbol.toStringTag]: "CSSVariableReferenceValue";
 }
 
 declare var CSSVariableReferenceValue: {
@@ -2270,6 +2304,7 @@ interface Cache {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Cache/put)
      */
     put(request: RequestInfo | URL, response: Response): Promise<void>;
+    readonly [Symbol.toStringTag]: "Cache";
 }
 
 declare var Cache: {
@@ -2314,6 +2349,7 @@ interface CacheStorage {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CacheStorage/open)
      */
     open(cacheName: string): Promise<Cache>;
+    readonly [Symbol.toStringTag]: "CacheStorage";
 }
 
 declare var CacheStorage: {
@@ -2387,6 +2423,7 @@ interface CanvasGradient {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CanvasGradient/addColorStop)
      */
     addColorStop(offset: number, color: string): void;
+    readonly [Symbol.toStringTag]: "CanvasGradient";
 }
 
 declare var CanvasGradient: {
@@ -2464,6 +2501,7 @@ interface CanvasPattern {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CanvasPattern/setTransform)
      */
     setTransform(transform?: DOMMatrix2DInit): void;
+    readonly [Symbol.toStringTag]: "CanvasPattern";
 }
 
 declare var CanvasPattern: {
@@ -2589,6 +2627,7 @@ interface Client {
      */
     postMessage(message: any, transfer: Transferable[]): void;
     postMessage(message: any, options?: StructuredSerializeOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Client: {
@@ -2626,6 +2665,7 @@ interface Clients {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Clients/openWindow)
      */
     openWindow(url: string | URL): Promise<WindowClient | null>;
+    readonly [Symbol.toStringTag]: "Clients";
 }
 
 declare var Clients: {
@@ -2657,6 +2697,7 @@ interface CloseEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CloseEvent/wasClean)
      */
     readonly wasClean: boolean;
+    readonly [Symbol.toStringTag]: "CloseEvent";
 }
 
 declare var CloseEvent: {
@@ -2672,6 +2713,7 @@ declare var CloseEvent: {
 interface CompressionStream extends GenericTransformStream {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "CompressionStream";
 }
 
 declare var CompressionStream: {
@@ -2714,6 +2756,7 @@ interface CookieStore extends EventTarget {
      */
     set(name: string, value: string): Promise<void>;
     set(options: CookieInit): Promise<void>;
+    readonly [Symbol.toStringTag]: "CookieStore";
 }
 
 declare var CookieStore: {
@@ -2746,6 +2789,7 @@ interface CookieStoreManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CookieStoreManager/unsubscribe)
      */
     unsubscribe(subscriptions: CookieStoreGetOptions[]): Promise<void>;
+    readonly [Symbol.toStringTag]: "CookieStoreManager";
 }
 
 declare var CookieStoreManager: {
@@ -2767,6 +2811,7 @@ interface CountQueuingStrategy extends QueuingStrategy {
     readonly highWaterMark: number;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/CountQueuingStrategy/size) */
     readonly size: QueuingStrategySize;
+    readonly [Symbol.toStringTag]: "CountQueuingStrategy";
 }
 
 declare var CountQueuingStrategy: {
@@ -2800,6 +2845,7 @@ interface Crypto {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Crypto/randomUUID)
      */
     randomUUID(): `${string}-${string}-${string}-${string}-${string}`;
+    readonly [Symbol.toStringTag]: "Crypto";
 }
 
 declare var Crypto: {
@@ -2838,6 +2884,7 @@ interface CryptoKey {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CryptoKey/usages)
      */
     readonly usages: KeyUsage[];
+    readonly [Symbol.toStringTag]: "CryptoKey";
 }
 
 declare var CryptoKey: {
@@ -2864,6 +2911,7 @@ interface CustomEvent<T = any> extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/CustomEvent/initCustomEvent)
      */
     initCustomEvent(type: string, bubbles?: boolean, cancelable?: boolean, detail?: T): void;
+    readonly [Symbol.toStringTag]: "CustomEvent";
 }
 
 declare var CustomEvent: {
@@ -2921,6 +2969,7 @@ interface DOMException extends Error {
     readonly TIMEOUT_ERR: 23;
     readonly INVALID_NODE_TYPE_ERR: 24;
     readonly DATA_CLONE_ERR: 25;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMException: {
@@ -3069,6 +3118,7 @@ interface DOMMatrix extends DOMMatrixReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMMatrix/translateSelf)
      */
     translateSelf(tx?: number, ty?: number, tz?: number): DOMMatrix;
+    readonly [Symbol.toStringTag]: "DOMMatrix";
 }
 
 declare var DOMMatrix: {
@@ -3239,6 +3289,7 @@ interface DOMMatrixReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMMatrixReadOnly/translate)
      */
     translate(tx?: number, ty?: number, tz?: number): DOMMatrix;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMMatrixReadOnly: {
@@ -3279,6 +3330,7 @@ interface DOMPoint extends DOMPointReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMPoint/z)
      */
     z: number;
+    readonly [Symbol.toStringTag]: "DOMPoint";
 }
 
 declare var DOMPoint: {
@@ -3334,6 +3386,7 @@ interface DOMPointReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMPointReadOnly/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMPointReadOnly: {
@@ -3389,6 +3442,7 @@ interface DOMQuad {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMQuad/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "DOMQuad";
 }
 
 declare var DOMQuad: {
@@ -3428,6 +3482,7 @@ interface DOMRect extends DOMRectReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMRect/y)
      */
     y: number;
+    readonly [Symbol.toStringTag]: "DOMRect";
 }
 
 declare var DOMRect: {
@@ -3501,6 +3556,7 @@ interface DOMRectReadOnly {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/DOMRectReadOnly/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var DOMRectReadOnly: {
@@ -3539,6 +3595,7 @@ interface DOMStringList {
      */
     item(index: number): string | null;
     [index: number]: string;
+    readonly [Symbol.toStringTag]: "DOMStringList";
 }
 
 declare var DOMStringList: {
@@ -3554,6 +3611,7 @@ declare var DOMStringList: {
 interface DecompressionStream extends GenericTransformStream {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "DecompressionStream";
 }
 
 declare var DecompressionStream: {
@@ -3598,6 +3656,7 @@ interface DedicatedWorkerGlobalScope extends WorkerGlobalScope, AnimationFramePr
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof DedicatedWorkerGlobalScopeEventMap>(type: K, listener: (this: DedicatedWorkerGlobalScope, ev: DedicatedWorkerGlobalScopeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "DedicatedWorkerGlobalScope";
 }
 
 declare var DedicatedWorkerGlobalScope: {
@@ -3757,6 +3816,7 @@ interface EncodedAudioChunk {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/EncodedAudioChunk/copyTo)
      */
     copyTo(destination: AllowSharedBufferSource): void;
+    readonly [Symbol.toStringTag]: "EncodedAudioChunk";
 }
 
 declare var EncodedAudioChunk: {
@@ -3800,6 +3860,7 @@ interface EncodedVideoChunk {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/EncodedVideoChunk/copyTo)
      */
     copyTo(destination: AllowSharedBufferSource): void;
+    readonly [Symbol.toStringTag]: "EncodedVideoChunk";
 }
 
 declare var EncodedVideoChunk: {
@@ -3843,6 +3904,7 @@ interface ErrorEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ErrorEvent/message)
      */
     readonly message: string;
+    readonly [Symbol.toStringTag]: "ErrorEvent";
 }
 
 declare var ErrorEvent: {
@@ -3972,6 +4034,7 @@ interface Event {
     readonly CAPTURING_PHASE: 1;
     readonly AT_TARGET: 2;
     readonly BUBBLING_PHASE: 3;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var Event: {
@@ -4042,6 +4105,7 @@ interface EventSource extends EventTarget {
     removeEventListener<K extends keyof EventSourceEventMap>(type: K, listener: (this: EventSource, ev: EventSourceEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: (this: EventSource, event: MessageEvent) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "EventSource";
 }
 
 declare var EventSource: {
@@ -4076,6 +4140,7 @@ interface EventTarget {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/EventTarget/removeEventListener)
      */
     removeEventListener(type: string, callback: EventListenerOrEventListenerObject | null, options?: EventListenerOptions | boolean): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var EventTarget: {
@@ -4101,6 +4166,7 @@ interface ExtendableCookieChangeEvent extends ExtendableEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ExtendableCookieChangeEvent/deleted)
      */
     readonly deleted: ReadonlyArray<CookieListItem>;
+    readonly [Symbol.toStringTag]: "ExtendableCookieChangeEvent";
 }
 
 declare var ExtendableCookieChangeEvent: {
@@ -4120,6 +4186,7 @@ interface ExtendableEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ExtendableEvent/waitUntil)
      */
     waitUntil(f: Promise<any>): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var ExtendableEvent: {
@@ -4163,6 +4230,7 @@ interface ExtendableMessageEvent extends ExtendableEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ExtendableMessageEvent/source)
      */
     readonly source: Client | ServiceWorker | MessagePort | null;
+    readonly [Symbol.toStringTag]: "ExtendableMessageEvent";
 }
 
 declare var ExtendableMessageEvent: {
@@ -4212,6 +4280,7 @@ interface FetchEvent extends ExtendableEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FetchEvent/respondWith)
      */
     respondWith(r: Response | PromiseLike<Response>): void;
+    readonly [Symbol.toStringTag]: "FetchEvent";
 }
 
 declare var FetchEvent: {
@@ -4243,6 +4312,7 @@ interface File extends Blob {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/File/webkitRelativePath)
      */
     readonly webkitRelativePath: string;
+    readonly [Symbol.toStringTag]: "File";
 }
 
 declare var File: {
@@ -4269,6 +4339,7 @@ interface FileList {
      */
     item(index: number): File | null;
     [index: number]: File;
+    readonly [Symbol.toStringTag]: "FileList";
 }
 
 declare var FileList: {
@@ -4359,6 +4430,7 @@ interface FileReader extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof FileReaderEventMap>(type: K, listener: (this: FileReader, ev: FileReaderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "FileReader";
 }
 
 declare var FileReader: {
@@ -4400,6 +4472,7 @@ interface FileReaderSync {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileReaderSync/readAsText)
      */
     readAsText(blob: Blob, encoding?: string): string;
+    readonly [Symbol.toStringTag]: "FileReaderSync";
 }
 
 declare var FileReaderSync: {
@@ -4439,6 +4512,7 @@ interface FileSystemDirectoryHandle extends FileSystemHandle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemDirectoryHandle/resolve)
      */
     resolve(possibleDescendant: FileSystemHandle): Promise<string[] | null>;
+    readonly [Symbol.toStringTag]: "FileSystemDirectoryHandle";
 }
 
 declare var FileSystemDirectoryHandle: {
@@ -4472,6 +4546,7 @@ interface FileSystemFileHandle extends FileSystemHandle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemFileHandle/getFile)
      */
     getFile(): Promise<File>;
+    readonly [Symbol.toStringTag]: "FileSystemFileHandle";
 }
 
 declare var FileSystemFileHandle: {
@@ -4504,6 +4579,7 @@ interface FileSystemHandle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemHandle/isSameEntry)
      */
     isSameEntry(other: FileSystemHandle): Promise<boolean>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var FileSystemHandle: {
@@ -4554,6 +4630,7 @@ interface FileSystemSyncAccessHandle {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemSyncAccessHandle/write)
      */
     write(buffer: AllowSharedBufferSource, options?: FileSystemReadWriteOptions): number;
+    readonly [Symbol.toStringTag]: "FileSystemSyncAccessHandle";
 }
 
 declare var FileSystemSyncAccessHandle: {
@@ -4586,6 +4663,7 @@ interface FileSystemWritableFileStream extends WritableStream {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FileSystemWritableFileStream/write)
      */
     write(data: FileSystemWriteChunkType): Promise<void>;
+    readonly [Symbol.toStringTag]: "FileSystemWritableFileStream";
 }
 
 declare var FileSystemWritableFileStream: {
@@ -4683,6 +4761,7 @@ interface FontFace {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FontFace/load)
      */
     load(): Promise<FontFace>;
+    readonly [Symbol.toStringTag]: "FontFace";
 }
 
 declare var FontFace: {
@@ -4737,6 +4816,7 @@ interface FontFaceSet extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof FontFaceSetEventMap>(type: K, listener: (this: FontFaceSet, ev: FontFaceSetEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "FontFaceSet";
 }
 
 declare var FontFaceSet: {
@@ -4756,6 +4836,7 @@ interface FontFaceSetLoadEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/FontFaceSetLoadEvent/fontfaces)
      */
     readonly fontfaces: ReadonlyArray<FontFace>;
+    readonly [Symbol.toStringTag]: "FontFaceSetLoadEvent";
 }
 
 declare var FontFaceSetLoadEvent: {
@@ -4815,6 +4896,7 @@ interface FormData {
     set(name: string, value: string): void;
     set(name: string, blobValue: Blob, filename?: string): void;
     forEach(callbackfn: (value: FormDataEntryValue, key: string, parent: FormData) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "FormData";
 }
 
 declare var FormData: {
@@ -4835,6 +4917,7 @@ interface GPUError {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/GPUError/message)
      */
     readonly message: string;
+    readonly [Symbol.toStringTag]: "GPUError";
 }
 
 declare var GPUError: {
@@ -4855,6 +4938,7 @@ interface GPUPipelineError extends DOMException {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/GPUPipelineError/reason)
      */
     readonly reason: GPUPipelineErrorReason;
+    readonly [Symbol.toStringTag]: "GPUPipelineError";
 }
 
 declare var GPUPipelineError: {
@@ -4912,6 +4996,7 @@ interface Headers {
      */
     set(name: string, value: string): void;
     forEach(callbackfn: (value: string, key: string, parent: Headers) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "Headers";
 }
 
 declare var Headers: {
@@ -4985,6 +5070,7 @@ interface IDBCursor {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBCursor/update)
      */
     update(value: any): IDBRequest<IDBValidKey>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var IDBCursor: {
@@ -5004,6 +5090,7 @@ interface IDBCursorWithValue extends IDBCursor {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBCursorWithValue/value)
      */
     readonly value: any;
+    readonly [Symbol.toStringTag]: "IDBCursorWithValue";
 }
 
 declare var IDBCursorWithValue: {
@@ -5077,6 +5164,7 @@ interface IDBDatabase extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBDatabaseEventMap>(type: K, listener: (this: IDBDatabase, ev: IDBDatabaseEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "IDBDatabase";
 }
 
 declare var IDBDatabase: {
@@ -5114,6 +5202,7 @@ interface IDBFactory {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBFactory/open)
      */
     open(name: string, version?: number): IDBOpenDBRequest;
+    readonly [Symbol.toStringTag]: "IDBFactory";
 }
 
 declare var IDBFactory: {
@@ -5199,6 +5288,7 @@ interface IDBIndex {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBIndex/openKeyCursor)
      */
     openKeyCursor(query?: IDBValidKey | IDBKeyRange | null, direction?: IDBCursorDirection): IDBRequest<IDBCursor | null>;
+    readonly [Symbol.toStringTag]: "IDBIndex";
 }
 
 declare var IDBIndex: {
@@ -5242,6 +5332,7 @@ interface IDBKeyRange {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBKeyRange/includes)
      */
     includes(key: any): boolean;
+    readonly [Symbol.toStringTag]: "IDBKeyRange";
 }
 
 declare var IDBKeyRange: {
@@ -5393,6 +5484,7 @@ interface IDBObjectStore {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBObjectStore/put)
      */
     put(value: any, key?: IDBValidKey): IDBRequest<IDBValidKey>;
+    readonly [Symbol.toStringTag]: "IDBObjectStore";
 }
 
 declare var IDBObjectStore: {
@@ -5419,6 +5511,7 @@ interface IDBOpenDBRequest extends IDBRequest<IDBDatabase> {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBOpenDBRequestEventMap>(type: K, listener: (this: IDBOpenDBRequest, ev: IDBOpenDBRequestEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "IDBOpenDBRequest";
 }
 
 declare var IDBOpenDBRequest: {
@@ -5475,6 +5568,7 @@ interface IDBRequest<T = any> extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBRequestEventMap>(type: K, listener: (this: IDBRequest<T>, ev: IDBRequestEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var IDBRequest: {
@@ -5552,6 +5646,7 @@ interface IDBTransaction extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof IDBTransactionEventMap>(type: K, listener: (this: IDBTransaction, ev: IDBTransactionEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "IDBTransaction";
 }
 
 declare var IDBTransaction: {
@@ -5577,6 +5672,7 @@ interface IDBVersionChangeEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/IDBVersionChangeEvent/oldVersion)
      */
     readonly oldVersion: number;
+    readonly [Symbol.toStringTag]: "IDBVersionChangeEvent";
 }
 
 declare var IDBVersionChangeEvent: {
@@ -5608,6 +5704,7 @@ interface ImageBitmap {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageBitmap/close)
      */
     close(): void;
+    readonly [Symbol.toStringTag]: "ImageBitmap";
 }
 
 declare var ImageBitmap: {
@@ -5627,6 +5724,7 @@ interface ImageBitmapRenderingContext {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageBitmapRenderingContext/transferFromImageBitmap)
      */
     transferFromImageBitmap(bitmap: ImageBitmap | null): void;
+    readonly [Symbol.toStringTag]: "ImageBitmapRenderingContext";
 }
 
 declare var ImageBitmapRenderingContext: {
@@ -5664,6 +5762,7 @@ interface ImageData {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageData/width)
      */
     readonly width: number;
+    readonly [Symbol.toStringTag]: "ImageData";
 }
 
 declare var ImageData: {
@@ -5721,6 +5820,7 @@ interface ImageDecoder {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageDecoder/reset)
      */
     reset(): void;
+    readonly [Symbol.toStringTag]: "ImageDecoder";
 }
 
 declare var ImageDecoder: {
@@ -5764,6 +5864,7 @@ interface ImageTrack {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ImageTrack/selected)
      */
     selected: boolean;
+    readonly [Symbol.toStringTag]: "ImageTrack";
 }
 
 declare var ImageTrack: {
@@ -5802,6 +5903,7 @@ interface ImageTrackList {
      */
     readonly selectedTrack: ImageTrack | null;
     [index: number]: ImageTrack;
+    readonly [Symbol.toStringTag]: "ImageTrackList";
 }
 
 declare var ImageTrackList: {
@@ -5842,6 +5944,7 @@ interface Lock {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Lock/name)
      */
     readonly name: string;
+    readonly [Symbol.toStringTag]: "Lock";
 }
 
 declare var Lock: {
@@ -5869,6 +5972,7 @@ interface LockManager {
      */
     request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
     request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    readonly [Symbol.toStringTag]: "LockManager";
 }
 
 declare var LockManager: {
@@ -5894,6 +5998,7 @@ interface MediaCapabilities {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaCapabilities/encodingInfo)
      */
     encodingInfo(configuration: MediaEncodingConfiguration): Promise<MediaCapabilitiesEncodingInfo>;
+    readonly [Symbol.toStringTag]: "MediaCapabilities";
 }
 
 declare var MediaCapabilities: {
@@ -5907,6 +6012,7 @@ declare var MediaCapabilities: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaSourceHandle)
  */
 interface MediaSourceHandle {
+    readonly [Symbol.toStringTag]: "MediaSourceHandle";
 }
 
 declare var MediaSourceHandle: {
@@ -5926,6 +6032,7 @@ interface MediaStreamTrackProcessor {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MediaStreamTrackProcessor/readable)
      */
     readonly readable: ReadableStream;
+    readonly [Symbol.toStringTag]: "MediaStreamTrackProcessor";
 }
 
 declare var MediaStreamTrackProcessor: {
@@ -5951,6 +6058,7 @@ interface MessageChannel {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/MessageChannel/port2)
      */
     readonly port2: MessagePort;
+    readonly [Symbol.toStringTag]: "MessageChannel";
 }
 
 declare var MessageChannel: {
@@ -5996,6 +6104,7 @@ interface MessageEvent<T = any> extends Event {
     readonly source: MessageEventSource | null;
     /** @deprecated */
     initMessageEvent(type: string, bubbles?: boolean, cancelable?: boolean, data?: any, origin?: string, lastEventId?: string, source?: MessageEventSource | null, ports?: MessagePort[]): void;
+    readonly [Symbol.toStringTag]: "MessageEvent";
 }
 
 declare var MessageEvent: {
@@ -6053,6 +6162,7 @@ interface MessagePort extends EventTarget, MessageEventTarget<MessagePort> {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof MessagePortEventMap>(type: K, listener: (this: MessagePort, ev: MessagePortEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "MessagePort";
 }
 
 declare var MessagePort: {
@@ -6091,6 +6201,7 @@ interface NavigationPreloadManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/NavigationPreloadManager/setHeaderValue)
      */
     setHeaderValue(value: string): Promise<void>;
+    readonly [Symbol.toStringTag]: "NavigationPreloadManager";
 }
 
 declare var NavigationPreloadManager: {
@@ -6235,6 +6346,7 @@ interface Notification extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof NotificationEventMap>(type: K, listener: (this: Notification, ev: NotificationEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "Notification";
 }
 
 declare var Notification: {
@@ -6266,6 +6378,7 @@ interface NotificationEvent extends ExtendableEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/NotificationEvent/notification)
      */
     readonly notification: Notification;
+    readonly [Symbol.toStringTag]: "NotificationEvent";
 }
 
 declare var NotificationEvent: {
@@ -6485,6 +6598,7 @@ interface OffscreenCanvas extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof OffscreenCanvasEventMap>(type: K, listener: (this: OffscreenCanvas, ev: OffscreenCanvasEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "OffscreenCanvas";
 }
 
 declare var OffscreenCanvas: {
@@ -6500,6 +6614,7 @@ declare var OffscreenCanvas: {
 interface OffscreenCanvasRenderingContext2D extends CanvasCompositing, CanvasDrawImage, CanvasDrawPath, CanvasFillStrokeStyles, CanvasFilters, CanvasImageData, CanvasImageSmoothing, CanvasPath, CanvasPathDrawingStyles, CanvasRect, CanvasShadowStyles, CanvasState, CanvasText, CanvasTextDrawingStyles, CanvasTransform {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/canvas) */
     readonly canvas: OffscreenCanvas;
+    readonly [Symbol.toStringTag]: "OffscreenCanvasRenderingContext2D";
 }
 
 declare var OffscreenCanvasRenderingContext2D: {
@@ -6519,6 +6634,7 @@ interface Path2D extends CanvasPath {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Path2D/addPath)
      */
     addPath(path: Path2D, transform?: DOMMatrix2DInit): void;
+    readonly [Symbol.toStringTag]: "Path2D";
 }
 
 declare var Path2D: {
@@ -6614,6 +6730,7 @@ interface Performance extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof PerformanceEventMap>(type: K, listener: (this: Performance, ev: PerformanceEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "Performance";
 }
 
 declare var Performance: {
@@ -6657,6 +6774,7 @@ interface PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceEntry/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var PerformanceEntry: {
@@ -6676,6 +6794,7 @@ interface PerformanceMark extends PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceMark/detail)
      */
     readonly detail: any;
+    readonly [Symbol.toStringTag]: "PerformanceMark";
 }
 
 declare var PerformanceMark: {
@@ -6695,6 +6814,7 @@ interface PerformanceMeasure extends PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceMeasure/detail)
      */
     readonly detail: any;
+    readonly [Symbol.toStringTag]: "PerformanceMeasure";
 }
 
 declare var PerformanceMeasure: {
@@ -6726,6 +6846,7 @@ interface PerformanceObserver {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceObserver/takeRecords)
      */
     takeRecords(): PerformanceEntryList;
+    readonly [Symbol.toStringTag]: "PerformanceObserver";
 }
 
 declare var PerformanceObserver: {
@@ -6763,6 +6884,7 @@ interface PerformanceObserverEntryList {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceObserverEntryList/getEntriesByType)
      */
     getEntriesByType(type: string): PerformanceEntryList;
+    readonly [Symbol.toStringTag]: "PerformanceObserverEntryList";
 }
 
 declare var PerformanceObserverEntryList: {
@@ -6896,6 +7018,7 @@ interface PerformanceResourceTiming extends PerformanceEntry {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceResourceTiming/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "PerformanceResourceTiming";
 }
 
 declare var PerformanceResourceTiming: {
@@ -6933,6 +7056,7 @@ interface PerformanceServerTiming {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PerformanceServerTiming/toJSON)
      */
     toJSON(): any;
+    readonly [Symbol.toStringTag]: "PerformanceServerTiming";
 }
 
 declare var PerformanceServerTiming: {
@@ -6968,6 +7092,7 @@ interface PermissionStatus extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof PermissionStatusEventMap>(type: K, listener: (this: PermissionStatus, ev: PermissionStatusEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "PermissionStatus";
 }
 
 declare var PermissionStatus: {
@@ -6987,6 +7112,7 @@ interface Permissions {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Permissions/query)
      */
     query(permissionDesc: PermissionDescriptor): Promise<PermissionStatus>;
+    readonly [Symbol.toStringTag]: "Permissions";
 }
 
 declare var Permissions: {
@@ -7019,6 +7145,7 @@ interface ProgressEvent<T extends EventTarget = EventTarget> extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ProgressEvent/total)
      */
     readonly total: number;
+    readonly [Symbol.toStringTag]: "ProgressEvent";
 }
 
 declare var ProgressEvent: {
@@ -7044,6 +7171,7 @@ interface PromiseRejectionEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PromiseRejectionEvent/reason)
      */
     readonly reason: any;
+    readonly [Symbol.toStringTag]: "PromiseRejectionEvent";
 }
 
 declare var PromiseRejectionEvent: {
@@ -7064,6 +7192,7 @@ interface PushEvent extends ExtendableEvent {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushEvent/data)
      */
     readonly data: PushMessageData | null;
+    readonly [Symbol.toStringTag]: "PushEvent";
 }
 
 declare var PushEvent: {
@@ -7096,6 +7225,7 @@ interface PushManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushManager/subscribe)
      */
     subscribe(options?: PushSubscriptionOptionsInit): Promise<PushSubscription>;
+    readonly [Symbol.toStringTag]: "PushManager";
 }
 
 declare var PushManager: {
@@ -7152,6 +7282,7 @@ interface PushMessageData {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushMessageData/text)
      */
     text(): string;
+    readonly [Symbol.toStringTag]: "PushMessageData";
 }
 
 declare var PushMessageData: {
@@ -7202,6 +7333,7 @@ interface PushSubscription {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushSubscription/unsubscribe)
      */
     unsubscribe(): Promise<boolean>;
+    readonly [Symbol.toStringTag]: "PushSubscription";
 }
 
 declare var PushSubscription: {
@@ -7213,6 +7345,7 @@ declare var PushSubscription: {
 interface PushSubscriptionChangeEvent extends ExtendableEvent {
     readonly newSubscription: PushSubscription | null;
     readonly oldSubscription: PushSubscription | null;
+    readonly [Symbol.toStringTag]: "PushSubscriptionChangeEvent";
 }
 
 declare var PushSubscriptionChangeEvent: {
@@ -7239,6 +7372,7 @@ interface PushSubscriptionOptions {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/PushSubscriptionOptions/userVisibleOnly)
      */
     readonly userVisibleOnly: boolean;
+    readonly [Symbol.toStringTag]: "PushSubscriptionOptions";
 }
 
 declare var PushSubscriptionOptions: {
@@ -7358,6 +7492,7 @@ interface RTCDataChannel extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof RTCDataChannelEventMap>(type: K, listener: (this: RTCDataChannel, ev: RTCDataChannelEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "RTCDataChannel";
 }
 
 declare var RTCDataChannel: {
@@ -7385,6 +7520,7 @@ interface RTCEncodedAudioFrame {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCEncodedAudioFrame/getMetadata)
      */
     getMetadata(): RTCEncodedAudioFrameMetadata;
+    readonly [Symbol.toStringTag]: "RTCEncodedAudioFrame";
 }
 
 declare var RTCEncodedAudioFrame: {
@@ -7418,6 +7554,7 @@ interface RTCEncodedVideoFrame {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCEncodedVideoFrame/getMetadata)
      */
     getMetadata(): RTCEncodedVideoFrameMetadata;
+    readonly [Symbol.toStringTag]: "RTCEncodedVideoFrame";
 }
 
 declare var RTCEncodedVideoFrame: {
@@ -7461,6 +7598,7 @@ interface RTCRtpScriptTransformer extends EventTarget {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCRtpScriptTransformer/sendKeyFrameRequest)
      */
     sendKeyFrameRequest(): Promise<void>;
+    readonly [Symbol.toStringTag]: "RTCRtpScriptTransformer";
 }
 
 declare var RTCRtpScriptTransformer: {
@@ -7480,6 +7618,7 @@ interface RTCTransformEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCTransformEvent/transformer)
      */
     readonly transformer: RTCRtpScriptTransformer;
+    readonly [Symbol.toStringTag]: "RTCTransformEvent";
 }
 
 declare var RTCTransformEvent: {
@@ -7523,6 +7662,7 @@ interface ReadableByteStreamController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableByteStreamController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "ReadableByteStreamController";
 }
 
 declare var ReadableByteStreamController: {
@@ -7574,6 +7714,7 @@ interface ReadableStream<R = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStream/tee)
      */
     tee(): [ReadableStream<R>, ReadableStream<R>];
+    readonly [Symbol.toStringTag]: "ReadableStream";
 }
 
 declare var ReadableStream: {
@@ -7601,6 +7742,7 @@ interface ReadableStreamBYOBReader extends ReadableStreamGenericReader {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/releaseLock)
      */
     releaseLock(): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamBYOBReader";
 }
 
 declare var ReadableStreamBYOBReader: {
@@ -7632,6 +7774,7 @@ interface ReadableStreamBYOBRequest {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBRequest/respondWithNewView)
      */
     respondWithNewView(view: ArrayBufferView<ArrayBuffer>): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamBYOBRequest";
 }
 
 declare var ReadableStreamBYOBRequest: {
@@ -7669,6 +7812,7 @@ interface ReadableStreamDefaultController<R = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamDefaultController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamDefaultController";
 }
 
 declare var ReadableStreamDefaultController: {
@@ -7694,6 +7838,7 @@ interface ReadableStreamDefaultReader<R = any> extends ReadableStreamGenericRead
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamDefaultReader/releaseLock)
      */
     releaseLock(): void;
+    readonly [Symbol.toStringTag]: "ReadableStreamDefaultReader";
 }
 
 declare var ReadableStreamDefaultReader: {
@@ -7732,6 +7877,7 @@ interface ReportingObserver {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReportingObserver/takeRecords)
      */
     takeRecords(): ReportList;
+    readonly [Symbol.toStringTag]: "ReportingObserver";
 }
 
 declare var ReportingObserver: {
@@ -7829,6 +7975,7 @@ interface Request extends Body {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Request/clone)
      */
     clone(): Request;
+    readonly [Symbol.toStringTag]: "Request";
 }
 
 declare var Request: {
@@ -7890,6 +8037,7 @@ interface Response extends Body {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Response/clone)
      */
     clone(): Response;
+    readonly [Symbol.toStringTag]: "Response";
 }
 
 declare var Response: {
@@ -7933,6 +8081,7 @@ interface Scheduler {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/Scheduler/yield)
      */
     yield(): Promise<void>;
+    readonly [Symbol.toStringTag]: "Scheduler";
 }
 
 declare var Scheduler: {
@@ -8018,6 +8167,7 @@ interface SecurityPolicyViolationEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SecurityPolicyViolationEvent/violatedDirective)
      */
     readonly violatedDirective: string;
+    readonly [Symbol.toStringTag]: "SecurityPolicyViolationEvent";
 }
 
 declare var SecurityPolicyViolationEvent: {
@@ -8061,6 +8211,7 @@ interface ServiceWorker extends EventTarget, AbstractWorker {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ServiceWorkerEventMap>(type: K, listener: (this: ServiceWorker, ev: ServiceWorkerEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ServiceWorker";
 }
 
 declare var ServiceWorker: {
@@ -8127,6 +8278,7 @@ interface ServiceWorkerContainer extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ServiceWorkerContainerEventMap>(type: K, listener: (this: ServiceWorkerContainer, ev: ServiceWorkerContainerEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ServiceWorkerContainer";
 }
 
 declare var ServiceWorkerContainer: {
@@ -8208,6 +8360,7 @@ interface ServiceWorkerGlobalScope extends WorkerGlobalScope {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ServiceWorkerGlobalScopeEventMap>(type: K, listener: (this: ServiceWorkerGlobalScope, ev: ServiceWorkerGlobalScopeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ServiceWorkerGlobalScope";
 }
 
 declare var ServiceWorkerGlobalScope: {
@@ -8298,6 +8451,7 @@ interface ServiceWorkerRegistration extends EventTarget, PushManagerAttribute {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof ServiceWorkerRegistrationEventMap>(type: K, listener: (this: ServiceWorkerRegistration, ev: ServiceWorkerRegistrationEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "ServiceWorkerRegistration";
 }
 
 declare var ServiceWorkerRegistration: {
@@ -8333,6 +8487,7 @@ interface SharedWorkerGlobalScope extends WorkerGlobalScope {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof SharedWorkerGlobalScopeEventMap>(type: K, listener: (this: SharedWorkerGlobalScope, ev: SharedWorkerGlobalScopeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "SharedWorkerGlobalScope";
 }
 
 declare var SharedWorkerGlobalScope: {
@@ -8365,6 +8520,7 @@ interface StorageManager {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/StorageManager/persisted)
      */
     persisted(): Promise<boolean>;
+    readonly [Symbol.toStringTag]: "StorageManager";
 }
 
 declare var StorageManager: {
@@ -8403,6 +8559,7 @@ interface StylePropertyMapReadOnly {
      */
     has(property: string): boolean;
     forEach(callbackfn: (value: CSSStyleValue[], key: string, parent: StylePropertyMapReadOnly) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "StylePropertyMapReadOnly";
 }
 
 declare var StylePropertyMapReadOnly: {
@@ -8495,6 +8652,7 @@ interface SubtleCrypto {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/SubtleCrypto/wrapKey)
      */
     wrapKey(format: KeyFormat, key: CryptoKey, wrappingKey: CryptoKey, wrapAlgorithm: AlgorithmIdentifier | RsaOaepParams | AesCtrParams | AesCbcParams | AesGcmParams): Promise<ArrayBuffer>;
+    readonly [Symbol.toStringTag]: "SubtleCrypto";
 }
 
 declare var SubtleCrypto: {
@@ -8514,6 +8672,7 @@ interface TaskController extends AbortController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TaskController/setPriority)
      */
     setPriority(priority: TaskPriority): void;
+    readonly [Symbol.toStringTag]: "TaskController";
 }
 
 declare var TaskController: {
@@ -8533,6 +8692,7 @@ interface TaskPriorityChangeEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TaskPriorityChangeEvent/previousPriority)
      */
     readonly previousPriority: TaskPriority;
+    readonly [Symbol.toStringTag]: "TaskPriorityChangeEvent";
 }
 
 declare var TaskPriorityChangeEvent: {
@@ -8562,6 +8722,7 @@ interface TaskSignal extends AbortSignal {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof TaskSignalEventMap>(type: K, listener: (this: TaskSignal, ev: TaskSignalEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "TaskSignal";
 }
 
 declare var TaskSignal: {
@@ -8587,6 +8748,7 @@ interface TextDecoder extends TextDecoderCommon {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextDecoder/decode)
      */
     decode(input?: AllowSharedBufferSource, options?: TextDecodeOptions): string;
+    readonly [Symbol.toStringTag]: "TextDecoder";
 }
 
 declare var TextDecoder: {
@@ -8623,6 +8785,7 @@ interface TextDecoderCommon {
 interface TextDecoderStream extends GenericTransformStream, TextDecoderCommon {
     readonly readable: ReadableStream<string>;
     readonly writable: WritableStream<BufferSource>;
+    readonly [Symbol.toStringTag]: "TextDecoderStream";
 }
 
 declare var TextDecoderStream: {
@@ -8648,6 +8811,7 @@ interface TextEncoder extends TextEncoderCommon {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextEncoder/encodeInto)
      */
     encodeInto(source: string, destination: Uint8Array<ArrayBufferLike>): TextEncoderEncodeIntoResult;
+    readonly [Symbol.toStringTag]: "TextEncoder";
 }
 
 declare var TextEncoder: {
@@ -8672,6 +8836,7 @@ interface TextEncoderCommon {
 interface TextEncoderStream extends GenericTransformStream, TextEncoderCommon {
     readonly readable: ReadableStream<Uint8Array<ArrayBuffer>>;
     readonly writable: WritableStream<string>;
+    readonly [Symbol.toStringTag]: "TextEncoderStream";
 }
 
 declare var TextEncoderStream: {
@@ -8757,6 +8922,7 @@ interface TextMetrics {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TextMetrics/width)
      */
     readonly width: number;
+    readonly [Symbol.toStringTag]: "TextMetrics";
 }
 
 declare var TextMetrics: {
@@ -8782,6 +8948,7 @@ interface TransformStream<I = any, O = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TransformStream/writable)
      */
     readonly writable: WritableStream<I>;
+    readonly [Symbol.toStringTag]: "TransformStream";
 }
 
 declare var TransformStream: {
@@ -8819,6 +8986,7 @@ interface TransformStreamDefaultController<O = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/TransformStreamDefaultController/terminate)
      */
     terminate(): void;
+    readonly [Symbol.toStringTag]: "TransformStreamDefaultController";
 }
 
 declare var TransformStreamDefaultController: {
@@ -8911,6 +9079,7 @@ interface URL {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/URL/toJSON)
      */
     toJSON(): string;
+    readonly [Symbol.toStringTag]: "URL";
 }
 
 declare var URL: {
@@ -9014,6 +9183,7 @@ interface URLPattern {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/URLPattern/test)
      */
     test(input?: URLPatternInput, baseURL?: string | URL): boolean;
+    readonly [Symbol.toStringTag]: "URLPattern";
 }
 
 declare var URLPattern: {
@@ -9078,6 +9248,7 @@ interface URLSearchParams {
     sort(): void;
     toString(): string;
     forEach(callbackfn: (value: string, key: string, parent: URLSearchParams) => void, thisArg?: any): void;
+    readonly [Symbol.toStringTag]: "URLSearchParams";
 }
 
 declare var URLSearchParams: {
@@ -9121,6 +9292,7 @@ interface VideoColorSpace {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/VideoColorSpace/toJSON)
      */
     toJSON(): VideoColorSpaceInit;
+    readonly [Symbol.toStringTag]: "VideoColorSpace";
 }
 
 declare var VideoColorSpace: {
@@ -9187,6 +9359,7 @@ interface VideoDecoder extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof VideoDecoderEventMap>(type: K, listener: (this: VideoDecoder, ev: VideoDecoderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "VideoDecoder";
 }
 
 declare var VideoDecoder: {
@@ -9259,6 +9432,7 @@ interface VideoEncoder extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof VideoEncoderEventMap>(type: K, listener: (this: VideoEncoder, ev: VideoEncoderEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "VideoEncoder";
 }
 
 declare var VideoEncoder: {
@@ -9362,6 +9536,7 @@ interface VideoFrame {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/VideoFrame/copyTo)
      */
     copyTo(destination: AllowSharedBufferSource, options?: VideoFrameCopyToOptions): Promise<PlaneLayout[]>;
+    readonly [Symbol.toStringTag]: "VideoFrame";
 }
 
 declare var VideoFrame: {
@@ -9625,6 +9800,7 @@ interface WEBGL_multi_draw {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext)
  */
 interface WebGL2RenderingContext extends WebGL2RenderingContextBase, WebGL2RenderingContextOverloads, WebGLRenderingContextBase {
+    readonly [Symbol.toStringTag]: "WebGL2RenderingContext";
 }
 
 declare var WebGL2RenderingContext: {
@@ -10717,6 +10893,7 @@ interface WebGLActiveInfo {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLActiveInfo/type)
      */
     readonly type: GLenum;
+    readonly [Symbol.toStringTag]: "WebGLActiveInfo";
 }
 
 declare var WebGLActiveInfo: {
@@ -10730,6 +10907,7 @@ declare var WebGLActiveInfo: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLBuffer)
  */
 interface WebGLBuffer {
+    readonly [Symbol.toStringTag]: "WebGLBuffer";
 }
 
 declare var WebGLBuffer: {
@@ -10749,6 +10927,7 @@ interface WebGLContextEvent extends Event {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLContextEvent/statusMessage)
      */
     readonly statusMessage: string;
+    readonly [Symbol.toStringTag]: "WebGLContextEvent";
 }
 
 declare var WebGLContextEvent: {
@@ -10762,6 +10941,7 @@ declare var WebGLContextEvent: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLFramebuffer)
  */
 interface WebGLFramebuffer {
+    readonly [Symbol.toStringTag]: "WebGLFramebuffer";
 }
 
 declare var WebGLFramebuffer: {
@@ -10775,6 +10955,7 @@ declare var WebGLFramebuffer: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLProgram)
  */
 interface WebGLProgram {
+    readonly [Symbol.toStringTag]: "WebGLProgram";
 }
 
 declare var WebGLProgram: {
@@ -10788,6 +10969,7 @@ declare var WebGLProgram: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLQuery)
  */
 interface WebGLQuery {
+    readonly [Symbol.toStringTag]: "WebGLQuery";
 }
 
 declare var WebGLQuery: {
@@ -10801,6 +10983,7 @@ declare var WebGLQuery: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderbuffer)
  */
 interface WebGLRenderbuffer {
+    readonly [Symbol.toStringTag]: "WebGLRenderbuffer";
 }
 
 declare var WebGLRenderbuffer: {
@@ -10814,6 +10997,7 @@ declare var WebGLRenderbuffer: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext)
  */
 interface WebGLRenderingContext extends WebGLRenderingContextBase, WebGLRenderingContextOverloads {
+    readonly [Symbol.toStringTag]: "WebGLRenderingContext";
 }
 
 declare var WebGLRenderingContext: {
@@ -11744,6 +11928,7 @@ interface WebGLRenderingContextOverloads {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLSampler)
  */
 interface WebGLSampler {
+    readonly [Symbol.toStringTag]: "WebGLSampler";
 }
 
 declare var WebGLSampler: {
@@ -11757,6 +11942,7 @@ declare var WebGLSampler: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLShader)
  */
 interface WebGLShader {
+    readonly [Symbol.toStringTag]: "WebGLShader";
 }
 
 declare var WebGLShader: {
@@ -11788,6 +11974,7 @@ interface WebGLShaderPrecisionFormat {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLShaderPrecisionFormat/rangeMin)
      */
     readonly rangeMin: GLint;
+    readonly [Symbol.toStringTag]: "WebGLShaderPrecisionFormat";
 }
 
 declare var WebGLShaderPrecisionFormat: {
@@ -11801,6 +11988,7 @@ declare var WebGLShaderPrecisionFormat: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLSync)
  */
 interface WebGLSync {
+    readonly [Symbol.toStringTag]: "WebGLSync";
 }
 
 declare var WebGLSync: {
@@ -11814,6 +12002,7 @@ declare var WebGLSync: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLTexture)
  */
 interface WebGLTexture {
+    readonly [Symbol.toStringTag]: "WebGLTexture";
 }
 
 declare var WebGLTexture: {
@@ -11827,6 +12016,7 @@ declare var WebGLTexture: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLTransformFeedback)
  */
 interface WebGLTransformFeedback {
+    readonly [Symbol.toStringTag]: "WebGLTransformFeedback";
 }
 
 declare var WebGLTransformFeedback: {
@@ -11840,6 +12030,7 @@ declare var WebGLTransformFeedback: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLUniformLocation)
  */
 interface WebGLUniformLocation {
+    readonly [Symbol.toStringTag]: "WebGLUniformLocation";
 }
 
 declare var WebGLUniformLocation: {
@@ -11853,6 +12044,7 @@ declare var WebGLUniformLocation: {
  * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLVertexArrayObject)
  */
 interface WebGLVertexArrayObject {
+    readonly [Symbol.toStringTag]: "WebGLVertexArrayObject";
 }
 
 declare var WebGLVertexArrayObject: {
@@ -11941,6 +12133,7 @@ interface WebSocket extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof WebSocketEventMap>(type: K, listener: (this: WebSocket, ev: WebSocketEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "WebSocket";
 }
 
 declare var WebSocket: {
@@ -12007,6 +12200,7 @@ interface WebTransport {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransport/createUnidirectionalStream)
      */
     createUnidirectionalStream(options?: WebTransportSendStreamOptions): Promise<WritableStream>;
+    readonly [Symbol.toStringTag]: "WebTransport";
 }
 
 declare var WebTransport: {
@@ -12033,6 +12227,7 @@ interface WebTransportBidirectionalStream {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransportBidirectionalStream/writable)
      */
     readonly writable: WritableStream;
+    readonly [Symbol.toStringTag]: "WebTransportBidirectionalStream";
 }
 
 declare var WebTransportBidirectionalStream: {
@@ -12085,6 +12280,7 @@ interface WebTransportDatagramDuplexStream {
     readonly readable: ReadableStream;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransportDatagramDuplexStream/writable) */
     readonly writable: WritableStream;
+    readonly [Symbol.toStringTag]: "WebTransportDatagramDuplexStream";
 }
 
 declare var WebTransportDatagramDuplexStream: {
@@ -12111,6 +12307,7 @@ interface WebTransportError extends DOMException {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebTransportError/streamErrorCode)
      */
     readonly streamErrorCode: number | null;
+    readonly [Symbol.toStringTag]: "WebTransportError";
 }
 
 declare var WebTransportError: {
@@ -12148,6 +12345,7 @@ interface WindowClient extends Client {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WindowClient/navigate)
      */
     navigate(url: string | URL): Promise<WindowClient | null>;
+    readonly [Symbol.toStringTag]: "WindowClient";
 }
 
 declare var WindowClient: {
@@ -12227,6 +12425,7 @@ interface Worker extends EventTarget, AbstractWorker, MessageEventTarget<Worker>
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof WorkerEventMap>(type: K, listener: (this: Worker, ev: WorkerEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "Worker";
 }
 
 declare var Worker: {
@@ -12289,6 +12488,7 @@ interface WorkerGlobalScope extends EventTarget, FontFaceSource, WindowOrWorkerG
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof WorkerGlobalScopeEventMap>(type: K, listener: (this: WorkerGlobalScope, ev: WorkerGlobalScopeEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var WorkerGlobalScope: {
@@ -12357,6 +12557,7 @@ interface WorkerLocation {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WorkerLocation/search)
      */
     readonly search: string;
+    readonly [Symbol.toStringTag]: "WorkerLocation";
 }
 
 declare var WorkerLocation: {
@@ -12389,6 +12590,7 @@ interface WorkerNavigator extends NavigatorBadge, NavigatorConcurrentHardware, N
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WorkerNavigator/serviceWorker)
      */
     readonly serviceWorker: ServiceWorkerContainer;
+    readonly [Symbol.toStringTag]: "WorkerNavigator";
 }
 
 declare var WorkerNavigator: {
@@ -12426,6 +12628,7 @@ interface WritableStream<W = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStream/getWriter)
      */
     getWriter(): WritableStreamDefaultWriter<W>;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var WritableStream: {
@@ -12451,6 +12654,7 @@ interface WritableStreamDefaultController {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStreamDefaultController/error)
      */
     error(e?: any): void;
+    readonly [Symbol.toStringTag]: "WritableStreamDefaultController";
 }
 
 declare var WritableStreamDefaultController: {
@@ -12506,6 +12710,7 @@ interface WritableStreamDefaultWriter<W = any> {
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/WritableStreamDefaultWriter/write)
      */
     write(chunk?: W): Promise<void>;
+    readonly [Symbol.toStringTag]: "WritableStreamDefaultWriter";
 }
 
 declare var WritableStreamDefaultWriter: {
@@ -12637,6 +12842,7 @@ interface XMLHttpRequest extends XMLHttpRequestEventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof XMLHttpRequestEventMap>(type: K, listener: (this: XMLHttpRequest, ev: XMLHttpRequestEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "XMLHttpRequest";
 }
 
 declare var XMLHttpRequest: {
@@ -12676,6 +12882,7 @@ interface XMLHttpRequestEventTarget extends EventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof XMLHttpRequestEventTargetEventMap>(type: K, listener: (this: XMLHttpRequestEventTarget, ev: XMLHttpRequestEventTargetEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: string;
 }
 
 declare var XMLHttpRequestEventTarget: {
@@ -12693,6 +12900,7 @@ interface XMLHttpRequestUpload extends XMLHttpRequestEventTarget {
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof XMLHttpRequestEventTargetEventMap>(type: K, listener: (this: XMLHttpRequestUpload, ev: XMLHttpRequestEventTargetEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
     removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
+    readonly [Symbol.toStringTag]: "XMLHttpRequestUpload";
 }
 
 declare var XMLHttpRequestUpload: {
@@ -12702,6 +12910,7 @@ declare var XMLHttpRequestUpload: {
 
 declare namespace WebAssembly {
     interface CompileError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.CompileError";
     }
 
     var CompileError: {
@@ -12734,6 +12943,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Exception/is)
          */
         is(exceptionTag: Tag): boolean;
+        readonly [Symbol.toStringTag]: "WebAssembly.Exception";
     }
 
     var Exception: {
@@ -12749,6 +12959,7 @@ declare namespace WebAssembly {
     interface Global<T extends ValueType = ValueType> {
         value: ValueTypeMap[T];
         valueOf(): ValueTypeMap[T];
+        readonly [Symbol.toStringTag]: "WebAssembly.Global";
     }
 
     var Global: {
@@ -12768,6 +12979,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Instance/exports)
          */
         readonly exports: Exports;
+        readonly [Symbol.toStringTag]: "WebAssembly.Instance";
     }
 
     var Instance: {
@@ -12776,6 +12988,7 @@ declare namespace WebAssembly {
     };
 
     interface LinkError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.LinkError";
     }
 
     var LinkError: {
@@ -12802,6 +13015,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Memory/grow)
          */
         grow(delta: AddressValue): AddressValue;
+        readonly [Symbol.toStringTag]: "WebAssembly.Memory";
     }
 
     var Memory: {
@@ -12815,6 +13029,7 @@ declare namespace WebAssembly {
      * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Module)
      */
     interface Module {
+        readonly [Symbol.toStringTag]: "WebAssembly.Module";
     }
 
     var Module: {
@@ -12841,6 +13056,7 @@ declare namespace WebAssembly {
     };
 
     interface RuntimeError extends Error {
+        readonly [Symbol.toStringTag]: "WebAssembly.RuntimeError";
     }
 
     var RuntimeError: {
@@ -12879,6 +13095,7 @@ declare namespace WebAssembly {
          * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Table/set)
          */
         set(index: AddressValue, value?: any): void;
+        readonly [Symbol.toStringTag]: "WebAssembly.Table";
     }
 
     var Table: {
@@ -12892,6 +13109,7 @@ declare namespace WebAssembly {
      * [MDN Reference](https://developer.mozilla.org/docs/WebAssembly/Reference/JavaScript_interface/Tag)
      */
     interface Tag {
+        readonly [Symbol.toStringTag]: "WebAssembly.Tag";
     }
 
     var Tag: {
@@ -13541,6 +13759,7 @@ interface FontFaceSet extends Set<FontFace> {
 
 interface FormDataIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): FormDataIterator<T>;
+    readonly [Symbol.toStringTag]: "FormData Iterator";
 }
 
 interface FormData {
@@ -13555,6 +13774,7 @@ interface FormData {
 
 interface HeadersIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): HeadersIterator<T>;
+    readonly [Symbol.toStringTag]: "Headers Iterator";
 }
 
 interface Headers {
@@ -13596,6 +13816,7 @@ interface MessageEvent<T = any> {
 
 interface StylePropertyMapReadOnlyIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): StylePropertyMapReadOnlyIterator<T>;
+    readonly [Symbol.toStringTag]: "StylePropertyMapReadOnly Iterator";
 }
 
 interface StylePropertyMapReadOnly {
@@ -13638,6 +13859,7 @@ interface SubtleCrypto {
 
 interface URLSearchParamsIterator<T> extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.iterator](): URLSearchParamsIterator<T>;
+    readonly [Symbol.toStringTag]: "URLSearchParams Iterator";
 }
 
 interface URLSearchParams {
@@ -13799,6 +14021,7 @@ interface WebGLRenderingContextOverloads {
 
 interface FileSystemDirectoryHandleAsyncIterator<T> extends AsyncIteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.asyncIterator](): FileSystemDirectoryHandleAsyncIterator<T>;
+    readonly [Symbol.toStringTag]: "FileSystemDirectoryHandle AsyncIterator";
 }
 
 interface FileSystemDirectoryHandle {
@@ -13810,6 +14033,7 @@ interface FileSystemDirectoryHandle {
 
 interface ReadableStreamAsyncIterator<T> extends AsyncIteratorObject<T, BuiltinIteratorReturn, unknown> {
     [Symbol.asyncIterator](): ReadableStreamAsyncIterator<T>;
+    readonly [Symbol.toStringTag]: "ReadableStream AsyncIterator";
 }
 
 interface ReadableStream<R = any> {
diff --git a/src/build.ts b/src/build.ts
index f22b8fe82..ed91084bc 100644
--- a/src/build.ts
+++ b/src/build.ts
@@ -285,6 +285,7 @@ async function emitDom() {
         allowUnrelatedSetterType: true,
         useGenericTypedArrays: true,
         includeIterable: true,
+        emitToStringTags: true,
       },
     },
     // ts5.7 (and later)
diff --git a/src/build/emitter.ts b/src/build/emitter.ts
index 000a4fe7f..3ad3675ef 100644
--- a/src/build/emitter.ts
+++ b/src/build/emitter.ts
@@ -138,6 +138,7 @@ export interface CompilerBehavior {
   allowUnrelatedSetterType?: boolean;
   useGenericTypedArrays?: boolean;
   includeIterable?: boolean;
+  emitToStringTags?: boolean;
 }
 
 export function emitWebIdl(
@@ -196,6 +197,22 @@ export function emitWebIdl(
     (i) => getExtendList(i.name).concat(getImplementList(i.name)),
   );
 
+  /// Interface name mapped to whether that interface is an inheritance target
+  const iNameIsInheritanceTarget = allNonCallbackInterfaces.reduce(
+    (result, i): Record<string, boolean> => {
+      result[i.name] ??= false;
+      if (i.forwardExtends) {
+        result[i.forwardExtends] = true;
+      }
+      iNameToIDependList[i.name].forEach((name) => {
+        name = name.replace(/<.*>$/, "");
+        result[name] = true;
+      });
+      return result;
+    },
+    {},
+  );
+
   /// Distinct event type list, used in the "createEvent" function
   const distinctETypeList = distinct(
     allNonCallbackInterfaces
@@ -1498,6 +1515,10 @@ export function emitWebIdl(
     emitEventHandlers(/*prefix*/ "", i);
     emitIndexers(EmitScope.InstanceOnly, i);
 
+    if (compilerBehavior.emitToStringTags) {
+      emitInterfaceToStringTag(i);
+    }
+
     printer.decreaseIndent();
     printer.printLine("}");
     printer.printLine("");
@@ -1507,6 +1528,7 @@ export function emitWebIdl(
         name: i.name,
         extends: i.forwardExtends,
         constructor: undefined,
+        noToStringTag: true,
       });
     }
 
@@ -1537,7 +1559,7 @@ export function emitWebIdl(
 
     if (namespacesAsInterfaces.includes(namespace.name)) {
       const name = namespace.name[0].toUpperCase() + namespace.name.slice(1);
-      emitInterface({ ...namespace, name });
+      emitInterface({ ...namespace, name, noToStringTag: true });
       printer.printLine(`declare var ${namespace.name}: ${name};`);
       printer.printLine("");
       return;
@@ -1625,6 +1647,21 @@ export function emitWebIdl(
     }
   }
 
+  function getQualifiedInterfaceName(i: Browser.Interface) {
+    return (i.legacyNamespace ? `${i.legacyNamespace}.` : "") + i.name;
+  }
+
+  function emitInterfaceToStringTag(i: Browser.Interface) {
+    if (i.noInterfaceObject || i.noToStringTag) {
+      return;
+    }
+    // Only emit as string literal if interface is not an inheritance target of other interfaces
+    const type = iNameIsInheritanceTarget[i.name]
+      ? "string"
+      : `"${getQualifiedInterfaceName(i)}"`;
+    printer.printLine(`readonly [Symbol.toStringTag]: ${type};`);
+  }
+
   function compareName(c1: { name: string }, c2: { name: string }) {
     return c1.name < c2.name ? -1 : c1.name > c2.name ? 1 : 0;
   }
@@ -1706,6 +1743,9 @@ export function emitWebIdl(
     );
     printer.increaseIndent();
     printer.printLine(`[${iteratorSymbol}](): ${iteratorType}<T>;`);
+    if (compilerBehavior.emitToStringTags) {
+      emitIteratorToStringTag(i, async);
+    }
     printer.decreaseIndent();
     printer.printLine("}");
   }
@@ -1777,6 +1817,15 @@ export function emitWebIdl(
     }
   }
 
+  function emitIteratorToStringTag(i: Browser.Interface, async: boolean) {
+    if (i.noToStringTag) {
+      return;
+    }
+    printer.printLine(
+      `readonly [Symbol.toStringTag]: "${i.name} ${async ? "Async" : ""}Iterator";`,
+    );
+  }
+
   function emitIterator(i: Browser.Interface) {
     // https://webidl.spec.whatwg.org/#dfn-indexed-property-getter
     const isIndexedPropertyGetter = (m: Browser.AnonymousMethod) =>
diff --git a/src/build/patches.ts b/src/build/patches.ts
index c9b2683dc..4d63b01e0 100644
--- a/src/build/patches.ts
+++ b/src/build/patches.ts
@@ -177,6 +177,11 @@ function handleMixinandInterfaces(
       "boolean",
       node.properties?.noInterfaceObject,
     ),
+    ...optionalMember(
+      "noToStringTag",
+      "boolean",
+      node.properties?.noToStringTag,
+    ),
   };
   return {
     name,
diff --git a/src/build/types.ts b/src/build/types.ts
index 69d5933db..ed5f29f0c 100644
--- a/src/build/types.ts
+++ b/src/build/types.ts
@@ -190,6 +190,7 @@ export interface Interface {
   "implicit-this"?: 1;
   overrideThis?: string;
   noInterfaceObject?: boolean;
+  noToStringTag?: boolean;
   global?: string;
   typeParameters?: TypeParameter[];
   overrideIndexSignatures?: string[];