1 files changed, 132 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/javascript/StartupHelpers.js b/node_modules/webpack/lib/javascript/StartupHelpers.js
new file mode 100644
index 00000000..d1f3b660
--- /dev/null
+++ b/node_modules/webpack/lib/javascript/StartupHelpers.js
@@ -0,0 +1,132 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const RuntimeGlobals = require("../RuntimeGlobals");
+const Template = require("../Template");
+const { isSubset } = require("../util/SetHelpers");
+const { getAllChunks } = require("./ChunkHelpers");
+
+/** @typedef {import("../util/Hash")} Hash */
+/** @typedef {import("../Chunk")} Chunk */
+/** @typedef {import("../Compilation")} Compilation */
+/** @typedef {import("../ChunkGraph")} ChunkGraph */
+/** @typedef {import("../ChunkGraph").EntryModuleWithChunkGroup} EntryModuleWithChunkGroup */
+/** @typedef {import("../ChunkGroup")} ChunkGroup */
+/** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */
+/** @typedef {(string|number)[]} EntryItem */
+
+const EXPORT_PREFIX = `var ${RuntimeGlobals.exports} = `;
+
+/**
+ * @param {ChunkGraph} chunkGraph chunkGraph
+ * @param {RuntimeTemplate} runtimeTemplate runtimeTemplate
+ * @param {EntryModuleWithChunkGroup[]} entries entries
+ * @param {Chunk} chunk chunk
+ * @param {boolean} passive true: passive startup with on chunks loaded
+ * @returns {string} runtime code
+ */
+exports.generateEntryStartup = (
+	chunkGraph,
+	runtimeTemplate,
+	entries,
+	chunk,
+	passive
+) => {
+	/** @type {string[]} */
+	const runtime = [
+		`var __webpack_exec__ = ${runtimeTemplate.returningFunction(
+			`${RuntimeGlobals.require}(${RuntimeGlobals.entryModuleId} = moduleId)`,
+			"moduleId"
+		)}`
+	];
+
+	const runModule = id => {
+		return `__webpack_exec__(${JSON.stringify(id)})`;
+	};
+	const outputCombination = (chunks, moduleIds, final) => {
+		if (chunks.size === 0) {
+			runtime.push(
+				`${final ? EXPORT_PREFIX : ""}(${moduleIds.map(runModule).join(", ")});`
+			);
+		} else {
+			const fn = runtimeTemplate.returningFunction(
+				moduleIds.map(runModule).join(", ")
+			);
+			runtime.push(
+				`${final && !passive ? EXPORT_PREFIX : ""}${
+					passive
+						? RuntimeGlobals.onChunksLoaded
+						: RuntimeGlobals.startupEntrypoint
+				}(0, ${JSON.stringify(Array.from(chunks, c => c.id))}, ${fn});`
+			);
+			if (final && passive) {
+				runtime.push(`${EXPORT_PREFIX}${RuntimeGlobals.onChunksLoaded}();`);
+			}
+		}
+	};
+
+	let currentChunks = undefined;
+	let currentModuleIds = undefined;
+
+	for (const [module, entrypoint] of entries) {
+		const runtimeChunk = entrypoint.getRuntimeChunk();
+		const moduleId = chunkGraph.getModuleId(module);
+		const chunks = getAllChunks(entrypoint, chunk, runtimeChunk);
+		if (
+			currentChunks &&
+			currentChunks.size === chunks.size &&
+			isSubset(currentChunks, chunks)
+		) {
+			currentModuleIds.push(moduleId);
+		} else {
+			if (currentChunks) {
+				outputCombination(currentChunks, currentModuleIds);
+			}
+			currentChunks = chunks;
+			currentModuleIds = [moduleId];
+		}
+	}
+
+	// output current modules with export prefix
+	if (currentChunks) {
+		outputCombination(currentChunks, currentModuleIds, true);
+	}
+	runtime.push("");
+	return Template.asString(runtime);
+};
+
+/**
+ * @param {Hash} hash the hash to update
+ * @param {ChunkGraph} chunkGraph chunkGraph
+ * @param {EntryModuleWithChunkGroup[]} entries entries
+ * @param {Chunk} chunk chunk
+ * @returns {void}
+ */
+exports.updateHashForEntryStartup = (hash, chunkGraph, entries, chunk) => {
+	for (const [module, entrypoint] of entries) {
+		const runtimeChunk = entrypoint.getRuntimeChunk();
+		const moduleId = chunkGraph.getModuleId(module);
+		hash.update(`${moduleId}`);
+		for (const c of getAllChunks(entrypoint, chunk, runtimeChunk))
+			hash.update(`${c.id}`);
+	}
+};
+
+/**
+ * @param {Chunk} chunk the chunk
+ * @param {ChunkGraph} chunkGraph the chunk graph
+ * @param {function(Chunk, ChunkGraph): boolean} filterFn filter function
+ * @returns {Set<number | string>} initially fulfilled chunk ids
+ */
+exports.getInitialChunkIds = (chunk, chunkGraph, filterFn) => {
+	const initialChunkIds = new Set(chunk.ids);
+	for (const c of chunk.getAllInitialChunks()) {
+		if (c === chunk || filterFn(c, chunkGraph)) continue;
+		for (const id of c.ids) initialChunkIds.add(id);
+	}
+	return initialChunkIds;
+};