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Attention! This repository is archived and the library has been moved to tinkoff/ng-web-apis monorepository

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Web Workers API for Angular

Part of Web APIs for Angular

This is a library for comfortable use of Web Workers API with Angular.

Install

If you do not have @ng-web-apis/common:

npm i @ng-web-apis/common

Now install the package:

npm i @ng-web-apis/workers

How it use

Create a worker and use it in a template with AsyncPipe:

import {WebWorker} from '@ng-web-apis/workers';

function compute(data: number): number {
    return data ** 2;
}

@Component({
    template: `
        Computed Result:
        <ng-container *ngIf="worker | async as event">{{ event.data }}</ng-container>
        <form (ngSubmit)="worker.postMessage(input.value)">
            <input #input />
            <button type="submit">Send to worker</button>
        </form>
    `,
})
class SomeComponent {
    readonly worker = WebWorker.fromFunction<number, number>(compute);
}

To get data from the worker event, use the toData operator

import {toData, WebWorker} from '@ng-web-apis/workers';

function compute(data: number): number {
    return data ** 2;
}

@Component({
    template: `
        Computed Result: {{ workerData$ | async }}
        <form (ngSubmit)="worker.postMessage(input.value)">
            <input #input />
            <button type="submit">Send to worker</button>
        </form>
    `,
})
class SomeComponent {
    readonly worker = WebWorker.fromFunction<number, number>(compute);
    readonly workerData$ = this.worker.pipe(toData());
}

It's the same with WorkerPipe only:

import {WorkerModule} from '@ng-web-apis/workers';
import {NgModule} from '@angular/core';

@NgModule({
    imports: [WorkerModule],
    declarations: [SomeComponent],
})
class SomeModule {}

import {WorkerExecutor, WebWorker} from '@ng-web-apis/workers';
import {FormControl} from '@angular/forms';

@Component({
    template: `
        Computed Result: {{ value | waWorker: changeData | async }}

        <input [(ngModel)]="value" />
    `,
})
class SomeComponent {
    value: string;

    changeData(data: string): string {
        return `${data} (changed)`;
    }
}

See also

Other Web APIs for Angular by @ng-web-apis

Open-source

Do you also want to open-source something, but hate the collateral work? Check out this Angular Open-source Library Starter we’ve created for our projects. It got you covered on continuous integration, pre-commit checks, linting, versioning + changelog, code coverage and all that jazz.