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node_modules/webpack/lib/ManifestPlugin.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Haijie Xie @hai-x
+*/
+
+"use strict";
+
+const { RawSource } = require("webpack-sources");
+const Compilation = require("./Compilation");
+const HotUpdateChunk = require("./HotUpdateChunk");
+const createSchemaValidation = require("./util/create-schema-validation");
+
+/** @typedef {import("./Compiler")} Compiler */
+/** @typedef {import("./Chunk")} Chunk */
+/** @typedef {import("./Chunk").ChunkName} ChunkName */
+/** @typedef {import("./Chunk").ChunkId} ChunkId */
+/** @typedef {import("./Compilation").Asset} Asset */
+/** @typedef {import("./Compilation").AssetInfo} AssetInfo */
+
+/** @typedef {import("../declarations/plugins/ManifestPlugin").ManifestPluginOptions} ManifestPluginOptions */
+/** @typedef {import("../declarations/plugins/ManifestPlugin").ManifestObject} ManifestObject */
+/** @typedef {import("../declarations/plugins/ManifestPlugin").ManifestEntrypoint} ManifestEntrypoint */
+/** @typedef {import("../declarations/plugins/ManifestPlugin").ManifestItem} ManifestItem */
+
+/** @typedef {(item: ManifestItem) => boolean} Filter */
+/** @typedef {(manifest: ManifestObject) => ManifestObject} Generate */
+/** @typedef {(manifest: ManifestObject) => string} Serialize */
+
+const PLUGIN_NAME = "ManifestPlugin";
+
+const validate = createSchemaValidation(
+	require("../schemas/plugins/ManifestPlugin.check"),
+	() => require("../schemas/plugins/ManifestPlugin.json"),
+	{
+		name: "ManifestPlugin",
+		baseDataPath: "options"
+	}
+);
+
+/**
+ * @param {string} filename filename
+ * @returns {string} extname
+ */
+const extname = (filename) => {
+	const replaced = filename.replace(/\?.*/, "");
+	const split = replaced.split(".");
+	const last = split.pop();
+	if (!last) return "";
+	return last && /^(?:gz|br|map)$/i.test(last)
+		? `${split.pop()}.${last}`
+		: last;
+};
+
+class ManifestPlugin {
+	/**
+	 * @param {ManifestPluginOptions} options options
+	 */
+	constructor(options) {
+		validate(options);
+
+		/** @type {ManifestPluginOptions & Required<Omit<ManifestPluginOptions, "filter" | "generate">>} */
+		this.options = {
+			filename: "manifest.json",
+			prefix: "[publicpath]",
+			entrypoints: true,
+			serialize: (manifest) => JSON.stringify(manifest, null, 2),
+			...options
+		};
+	}
+
+	/**
+	 * Apply the plugin
+	 * @param {Compiler} compiler the compiler instance
+	 * @returns {void}
+	 */
+	apply(compiler) {
+		compiler.hooks.thisCompilation.tap(PLUGIN_NAME, (compilation) => {
+			compilation.hooks.processAssets.tap(
+				{
+					name: PLUGIN_NAME,
+					stage: Compilation.PROCESS_ASSETS_STAGE_SUMMARIZE
+				},
+				() => {
+					const hashDigestLength = compilation.outputOptions.hashDigestLength;
+					const publicPath = compilation.getPath(
+						compilation.outputOptions.publicPath
+					);
+
+					/**
+					 * @param {string | string[]} value value
+					 * @returns {RegExp} regexp to remove hash
+					 */
+					const createHashRegExp = (value) =>
+						new RegExp(
+							`(?:\\.${Array.isArray(value) ? `(${value.join("|")})` : value})(?=\\.)`,
+							"gi"
+						);
+
+					/**
+					 * @param {string} name name
+					 * @param {AssetInfo | null} info asset info
+					 * @returns {string} hash removed name
+					 */
+					const removeHash = (name, info) => {
+						// Handles hashes that match configured `hashDigestLength`
+						// i.e. index.XXXX.html -> index.html (html-webpack-plugin)
+						if (hashDigestLength <= 0) return name;
+						const reg = createHashRegExp(`[a-f0-9]{${hashDigestLength},32}`);
+						return name.replace(reg, "");
+					};
+
+					/**
+					 * @param {Chunk} chunk chunk
+					 * @returns {ChunkName | ChunkId} chunk name or chunk id
+					 */
+					const getName = (chunk) => {
+						if (chunk.name) return chunk.name;
+
+						return chunk.id;
+					};
+
+					/** @type {ManifestObject} */
+					let manifest = {};
+
+					if (this.options.entrypoints) {
+						/** @type {ManifestObject["entrypoints"]} */
+						const entrypoints = {};
+
+						for (const [name, entrypoint] of compilation.entrypoints) {
+							/** @type {string[]} */
+							const imports = [];
+
+							for (const chunk of entrypoint.chunks) {
+								for (const file of chunk.files) {
+									const name = getName(chunk);
+
+									imports.push(name ? `${name}.${extname(file)}` : file);
+								}
+							}
+
+							/** @type {ManifestEntrypoint} */
+							const item = { imports };
+							const parents = entrypoint
+								.getParents()
+								.map((item) => /** @type {string} */ (item.name));
+
+							if (parents.length > 0) {
+								item.parents = parents;
+							}
+
+							entrypoints[name] = item;
+						}
+
+						manifest.entrypoints = entrypoints;
+					}
+
+					/** @type {ManifestObject["assets"]} */
+					const assets = {};
+
+					/** @type {Set<string>} */
+					const added = new Set();
+
+					/**
+					 * @param {string} file file
+					 * @param {string=} usedName usedName
+					 * @returns {void}
+					 */
+					const handleFile = (file, usedName) => {
+						if (added.has(file)) return;
+						added.add(file);
+
+						const asset = compilation.getAsset(file);
+						if (!asset) return;
+						const sourceFilename = asset.info.sourceFilename;
+						const name =
+							usedName ||
+							sourceFilename ||
+							// Fallback for unofficial plugins, just remove hash from filename
+							removeHash(file, asset.info);
+
+						const prefix = this.options.prefix.replace(
+							/\[publicpath\]/gi,
+							() => (publicPath === "auto" ? "/" : publicPath)
+						);
+						/** @type {ManifestItem} */
+						const item = { file: prefix + file };
+
+						if (sourceFilename) {
+							item.src = sourceFilename;
+						}
+
+						if (this.options.filter) {
+							const needKeep = this.options.filter(item);
+
+							if (!needKeep) {
+								return;
+							}
+						}
+
+						assets[name] = item;
+					};
+
+					for (const chunk of compilation.chunks) {
+						if (chunk instanceof HotUpdateChunk) continue;
+
+						for (const auxiliaryFile of chunk.auxiliaryFiles) {
+							handleFile(auxiliaryFile);
+						}
+
+						const name = getName(chunk);
+
+						for (const file of chunk.files) {
+							handleFile(file, name ? `${name}.${extname(file)}` : file);
+						}
+					}
+
+					for (const asset of compilation.getAssets()) {
+						if (asset.info.hotModuleReplacement) {
+							continue;
+						}
+
+						handleFile(asset.name);
+					}
+
+					manifest.assets = assets;
+
+					if (this.options.generate) {
+						manifest = this.options.generate(manifest);
+					}
+
+					compilation.emitAsset(
+						this.options.filename,
+						new RawSource(this.options.serialize(manifest)),
+						{ manifest: true }
+					);
+				}
+			);
+		});
+	}
+}
+
+module.exports = ManifestPlugin;