Rebase.

Author: Viatorus

config/karma.config.js

@@ -61,6 +61,9 @@ module.exports = function (config) {
             test: /\.ts$/
           }
         ]
+      },
+      externals: {
+        fs: "fs"
       }
     },
     webpackMiddleware: {

packages/full-text-search/src/inverted_index.ts

@@ -32,7 +32,7 @@ export class InvertedIndex {
   public docCount: number = 0;
   public docStore: Map<InvertedIndex.DocumentIndex, InvertedIndex.DocStore> = new Map();
   public totalFieldLength: number = 0;
-  public root: InvertedIndex.Index = new Map();
+  public root: InvertedIndex.Index = new Map() as InvertedIndex.Index;
 
   private _store: boolean;
   private _optimizeChanges: boolean;
@@ -286,7 +286,7 @@ export class InvertedIndex {
   }
 
   private static _deserializeIndex(serialized: Serialization.FullTextSearch.Index): InvertedIndex.Index {
-    const idx: InvertedIndex.Index = new Map();
+    const idx: InvertedIndex.Index = new Map() as InvertedIndex.Index;
 
     if (serialized.k !== undefined) {
       for (let i = 0; i < serialized.k.length; i++) {

packages/loki/src/serialization/v2_0.ts

@@ -222,12 +222,14 @@ export namespace V2_0 {
   }
 
   export namespace FullTextSearch {
+    export type DocumentIndex = number | string;
+
     export type InvertedIndex = SpareSerialized | FullSerialized;
 
     export interface Index {
       d?: {
         df: number;
-        dc: [number, number][]
+        dc: [DocumentIndex, number][]
       };
       k?: number[];
       v?: Index[];
@@ -242,7 +244,7 @@ export namespace V2_0 {
       store: true;
       optimizeChanges: boolean;
       docCount: number;
-      docStore: [number, DocStore][];
+      docStore: [DocumentIndex, DocStore][];
       totalFieldLength: number;
       root: Index;
     };