Updated the files.

my-app/node_modules/webpack-sources/lib/RawSource.js

@@ -0,0 +1,81 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const streamChunksOfRawSource = require("./helpers/streamChunksOfRawSource");
+const Source = require("./Source");
+
+class RawSource extends Source {
+	constructor(value, convertToString = false) {
+		super();
+		const isBuffer = Buffer.isBuffer(value);
+		if (!isBuffer && typeof value !== "string") {
+			throw new TypeError("argument 'value' must be either string of Buffer");
+		}
+		this._valueIsBuffer = !convertToString && isBuffer;
+		this._value = convertToString && isBuffer ? undefined : value;
+		this._valueAsBuffer = isBuffer ? value : undefined;
+		this._valueAsString = isBuffer ? undefined : value;
+	}
+
+	isBuffer() {
+		return this._valueIsBuffer;
+	}
+
+	source() {
+		if (this._value === undefined) {
+			this._value = this._valueAsBuffer.toString("utf-8");
+		}
+		return this._value;
+	}
+
+	buffer() {
+		if (this._valueAsBuffer === undefined) {
+			this._valueAsBuffer = Buffer.from(this._value, "utf-8");
+		}
+		return this._valueAsBuffer;
+	}
+
+	map(options) {
+		return null;
+	}
+
+	/**
+	 * @param {object} options options
+	 * @param {function(string, number, number, number, number, number, number): void} onChunk called for each chunk of code
+	 * @param {function(number, string, string)} onSource called for each source
+	 * @param {function(number, string)} onName called for each name
+	 * @returns {void}
+	 */
+	streamChunks(options, onChunk, onSource, onName) {
+		if (this._value === undefined) {
+			this._value = Buffer.from(this._valueAsBuffer, "utf-8");
+		}
+		if (this._valueAsString === undefined) {
+			this._valueAsString =
+				typeof this._value === "string"
+					? this._value
+					: this._value.toString("utf-8");
+		}
+		return streamChunksOfRawSource(
+			this._valueAsString,
+			onChunk,
+			onSource,
+			onName,
+			!!(options && options.finalSource)
+		);
+	}
+
+	updateHash(hash) {
+		if (this._valueAsBuffer === undefined) {
+			this._valueAsBuffer = Buffer.from(this._value, "utf-8");
+		}
+		hash.update("RawSource");
+		hash.update(this._valueAsBuffer);
+	}
+}
+
+module.exports = RawSource;