настройка webpack

node_modules/source-list-map/lib/MappingsContext.js

@@ -0,0 +1,45 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+class MappingsContext {
+	constructor() {
+		this.sourcesIndices = new Map();
+		this.sourcesContent = new Map();
+		this.hasSourceContent = false;
+		this.currentOriginalLine = 1;
+		this.currentSource = 0;
+		this.unfinishedGeneratedLine = false;
+	}
+
+	ensureSource(source, originalSource) {
+		let idx = this.sourcesIndices.get(source);
+		if(typeof idx === "number") {
+			return idx;
+		}
+		idx = this.sourcesIndices.size;
+		this.sourcesIndices.set(source, idx);
+		this.sourcesContent.set(source, originalSource)
+		if(typeof originalSource === "string")
+			this.hasSourceContent = true;
+		return idx;
+	}
+
+	getArrays() {
+		const sources = [];
+		const sourcesContent = [];
+
+		for(const pair of this.sourcesContent) {
+			sources.push(pair[0]);
+			sourcesContent.push(pair[1]);
+		}
+
+		return {
+			sources,
+			sourcesContent
+		};
+	}
+}
+module.exports = MappingsContext;