Updated the files.

my-app/node_modules/webpack/lib/dependencies/HarmonyExportInitFragment.js

@@ -0,0 +1,169 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const InitFragment = require("../InitFragment");
+const RuntimeGlobals = require("../RuntimeGlobals");
+const { first } = require("../util/SetHelpers");
+const { propertyName } = require("../util/propertyName");
+
+/** @typedef {import("webpack-sources").Source} Source */
+/** @typedef {import("../Generator").GenerateContext} GenerateContext */
+
+const joinIterableWithComma = iterable => {
+	// This is more performant than Array.from().join(", ")
+	// as it doesn't create an array
+	let str = "";
+	let first = true;
+	for (const item of iterable) {
+		if (first) {
+			first = false;
+		} else {
+			str += ", ";
+		}
+		str += item;
+	}
+	return str;
+};
+
+const EMPTY_MAP = new Map();
+const EMPTY_SET = new Set();
+
+/**
+ * @typedef {GenerateContext} Context
+ */
+class HarmonyExportInitFragment extends InitFragment {
+	/**
+	 * @param {string} exportsArgument the exports identifier
+	 * @param {Map<string, string>} exportMap mapping from used name to exposed variable name
+	 * @param {Set<string>} unusedExports list of unused export names
+	 */
+	constructor(
+		exportsArgument,
+		exportMap = EMPTY_MAP,
+		unusedExports = EMPTY_SET
+	) {
+		super(undefined, InitFragment.STAGE_HARMONY_EXPORTS, 1, "harmony-exports");
+		this.exportsArgument = exportsArgument;
+		this.exportMap = exportMap;
+		this.unusedExports = unusedExports;
+	}
+
+	/**
+	 * @param {HarmonyExportInitFragment[]} fragments all fragments to merge
+	 * @returns {HarmonyExportInitFragment} merged fragment
+	 */
+	mergeAll(fragments) {
+		let exportMap;
+		let exportMapOwned = false;
+		let unusedExports;
+		let unusedExportsOwned = false;
+
+		for (const fragment of fragments) {
+			if (fragment.exportMap.size !== 0) {
+				if (exportMap === undefined) {
+					exportMap = fragment.exportMap;
+					exportMapOwned = false;
+				} else {
+					if (!exportMapOwned) {
+						exportMap = new Map(exportMap);
+						exportMapOwned = true;
+					}
+					for (const [key, value] of fragment.exportMap) {
+						if (!exportMap.has(key)) exportMap.set(key, value);
+					}
+				}
+			}
+			if (fragment.unusedExports.size !== 0) {
+				if (unusedExports === undefined) {
+					unusedExports = fragment.unusedExports;
+					unusedExportsOwned = false;
+				} else {
+					if (!unusedExportsOwned) {
+						unusedExports = new Set(unusedExports);
+						unusedExportsOwned = true;
+					}
+					for (const value of fragment.unusedExports) {
+						unusedExports.add(value);
+					}
+				}
+			}
+		}
+		return new HarmonyExportInitFragment(
+			this.exportsArgument,
+			exportMap,
+			unusedExports
+		);
+	}
+
+	merge(other) {
+		let exportMap;
+		if (this.exportMap.size === 0) {
+			exportMap = other.exportMap;
+		} else if (other.exportMap.size === 0) {
+			exportMap = this.exportMap;
+		} else {
+			exportMap = new Map(other.exportMap);
+			for (const [key, value] of this.exportMap) {
+				if (!exportMap.has(key)) exportMap.set(key, value);
+			}
+		}
+		let unusedExports;
+		if (this.unusedExports.size === 0) {
+			unusedExports = other.unusedExports;
+		} else if (other.unusedExports.size === 0) {
+			unusedExports = this.unusedExports;
+		} else {
+			unusedExports = new Set(other.unusedExports);
+			for (const value of this.unusedExports) {
+				unusedExports.add(value);
+			}
+		}
+		return new HarmonyExportInitFragment(
+			this.exportsArgument,
+			exportMap,
+			unusedExports
+		);
+	}
+
+	/**
+	 * @param {Context} context context
+	 * @returns {string|Source} the source code that will be included as initialization code
+	 */
+	getContent({ runtimeTemplate, runtimeRequirements }) {
+		runtimeRequirements.add(RuntimeGlobals.exports);
+		runtimeRequirements.add(RuntimeGlobals.definePropertyGetters);
+
+		const unusedPart =
+			this.unusedExports.size > 1
+				? `/* unused harmony exports ${joinIterableWithComma(
+						this.unusedExports
+				  )} */\n`
+				: this.unusedExports.size > 0
+				? `/* unused harmony export ${first(this.unusedExports)} */\n`
+				: "";
+		const definitions = [];
+		const orderedExportMap = Array.from(this.exportMap).sort(([a], [b]) =>
+			a < b ? -1 : 1
+		);
+		for (const [key, value] of orderedExportMap) {
+			definitions.push(
+				`\n/* harmony export */   ${propertyName(
+					key
+				)}: ${runtimeTemplate.returningFunction(value)}`
+			);
+		}
+		const definePart =
+			this.exportMap.size > 0
+				? `/* harmony export */ ${RuntimeGlobals.definePropertyGetters}(${
+						this.exportsArgument
+				  }, {${definitions.join(",")}\n/* harmony export */ });\n`
+				: "";
+		return `${definePart}${unusedPart}`;
+	}
+}
+
+module.exports = HarmonyExportInitFragment;