Merge pull request #11956 from webpack/feature/asset-processing

allow to process assets that are added during processAssets

lib/Compilation.js

@@ -289,10 +289,122 @@ class Compilation {
 	 */
 	constructor(compiler) {
 		const getNormalModuleLoader = () => deprecatedNormalModuleLoaderHook(this);
-		/** @type {AsyncSeriesHook<[CompilationAssets]>} */
+		/** @typedef {{ additionalAssets?: true | Function }} ProcessAssetsAdditionalOptions */
+		/** @type {AsyncSeriesHook<[CompilationAssets], ProcessAssetsAdditionalOptions>} */
 		const processAssetsHook = new AsyncSeriesHook(["assets"]);
+
+		let savedAssets = new Set();
+		const popNewAssets = assets => {
+			let newAssets = undefined;
+			for (const file of Object.keys(assets)) {
+				if (savedAssets.has(file)) continue;
+				if (newAssets === undefined) {
+					newAssets = Object.create(null);
+				}
+				newAssets[file] = assets[file];
+				savedAssets.add(file);
+			}
+			return newAssets;
+		};
+		processAssetsHook.intercept({
+			name: "Compilation",
+			call: () => {
+				savedAssets.clear();
+			},
+			register: tap => {
+				const { type, name } = tap;
+				const { fn, additionalAssets, ...remainingTap } = tap;
+				const additionalAssetsFn =
+					additionalAssets === true ? fn : additionalAssets;
+				let processedAssets = undefined;
+				switch (type) {
+					case "sync":
+						if (additionalAssetsFn) {
+							this.hooks.processAdditionalAssets.tap(name, assets => {
+								if (processedAssets === this.assets) additionalAssetsFn(assets);
+							});
+						}
+						return {
+							...remainingTap,
+							type: "async",
+							fn: (assets, callback) => {
+								try {
+									fn(assets);
+								} catch (e) {
+									return callback(e);
+								}
+								processedAssets = this.assets;
+								const newAssets = popNewAssets(assets);
+								if (newAssets !== undefined) {
+									this.hooks.processAdditionalAssets.callAsync(
+										newAssets,
+										callback
+									);
+									return;
+								}
+								callback();
+							}
+						};
+					case "async":
+						if (additionalAssetsFn) {
+							this.hooks.processAdditionalAssets.tapAsync(
+								name,
+								(assets, callback) => {
+									if (processedAssets === this.assets)
+										return additionalAssetsFn(assets, callback);
+									callback();
+								}
+							);
+						}
+						return {
+							...remainingTap,
+							fn: (assets, callback) => {
+								fn(assets, err => {
+									if (err) return callback(err);
+									processedAssets = this.assets;
+									const newAssets = popNewAssets(assets);
+									if (newAssets !== undefined) {
+										this.hooks.processAdditionalAssets.callAsync(
+											newAssets,
+											callback
+										);
+										return;
+									}
+									callback();
+								});
+							}
+						};
+					case "promise":
+						if (additionalAssetsFn) {
+							this.hooks.processAdditionalAssets.tapPromise(name, assets => {
+								if (processedAssets === this.assets)
+									return additionalAssetsFn(assets);
+								return Promise.resolve();
+							});
+						}
+						return {
+							...remainingTap,
+							fn: assets => {
+								const p = fn(assets);
+								if (!p || !p.then) return p;
+								return p.then(() => {
+									processedAssets = this.assets;
+									const newAssets = popNewAssets(assets);
+									if (newAssets !== undefined) {
+										return this.hooks.processAdditionalAssets.promise(
+											newAssets
+										);
+									}
+								});
+							}
+						};
+				}
+			}
+		});
+
 		/** @type {SyncHook<[CompilationAssets]>} */
 		const afterProcessAssetsHook = new SyncHook(["assets"]);
+
 		/**
 		 * @template T
 		 * @param {string} name name of the hook
@@ -544,6 +656,8 @@ BREAKING CHANGE: Asset processing hooks in Compilation has been merged into a si
 
 			processAssets: processAssetsHook,
 			afterProcessAssets: afterProcessAssetsHook,
+			/** @type {AsyncSeriesHook<[CompilationAssets]>} */
+			processAdditionalAssets: new AsyncSeriesHook(["assets"]),
 
 			/** @type {SyncBailHook<[], boolean>} */
 			needAdditionalSeal: new SyncBailHook([]),
@@ -3439,6 +3553,8 @@ Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE = 100;
 
 /**
  * Optimize the count of existing assets, e. g. by merging them.
+ * Only assets of the same type should be merged.
+ * For assets of different types see PROCESS_ASSETS_STAGE_OPTIMIZE_INLINE.
  */
 Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE_COUNT = 200;
 
@@ -3453,17 +3569,23 @@ Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE_COMPATIBILITY = 300;
 Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE_SIZE = 400;
 
 /**
- * Summarize the list of existing assets.
+ * Add development tooling to assets, e. g. by extracting a SourceMap.
- * When creating new assets from this they should be fully optimized.
+ */
+Compilation.PROCESS_ASSETS_STAGE_DEV_TOOLING = 500;
+
+/**
+ * Optimize the count of existing assets, e. g. by inlining assets of into other assets.
+ * Only assets of different types should be inlined.
+ * For assets of the same type see PROCESS_ASSETS_STAGE_OPTIMIZE_COUNT.
+ */
+Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE_INLINE = 700;
+
+/**
+ * Summarize the list of existing assets
  * e. g. creating an assets manifest of Service Workers.
  */
 Compilation.PROCESS_ASSETS_STAGE_SUMMARIZE = 1000;
 
-/**
- * Add development tooling to assets, e. g. by extracting a SourceMap.
- */
-Compilation.PROCESS_ASSETS_STAGE_DEV_TOOLING = 2000;
-
 /**
  * Optimize the hashes of the assets, e. g. by generating real hashes of the asset content.
  */

lib/Compiler.js

@@ -152,9 +152,9 @@ class Compiler {
 			beforeCompile: new AsyncSeriesHook(["params"]),
 			/** @type {SyncHook<[CompilationParams]>} */
 			compile: new SyncHook(["params"]),
-			/** @type {AsyncParallelHook<[Compilation], Module>} */
+			/** @type {AsyncParallelHook<[Compilation]>} */
 			make: new AsyncParallelHook(["compilation"]),
-			/** @type {AsyncParallelHook<[Compilation], Module>} */
+			/** @type {AsyncParallelHook<[Compilation]>} */
 			finishMake: new AsyncSeriesHook(["compilation"]),
 			/** @type {AsyncSeriesHook<[Compilation]>} */
 			afterCompile: new AsyncSeriesHook(["compilation"]),

lib/SourceMapDevToolPlugin.js

@@ -162,7 +162,8 @@ class SourceMapDevToolPlugin {
 			compilation.hooks.processAssets.tapAsync(
 				{
 					name: "SourceMapDevToolPlugin",
-					stage: Compilation.PROCESS_ASSETS_STAGE_DEV_TOOLING
+					stage: Compilation.PROCESS_ASSETS_STAGE_DEV_TOOLING,
+					additionalAssets: true
 				},
 				(assets, callback) => {
 					const chunkGraph = compilation.chunkGraph;

lib/index.js

@@ -355,6 +355,9 @@ module.exports = mergeExports(fn, {
 		get ModuleConcatenationPlugin() {
 			return require("./optimize/ModuleConcatenationPlugin");
 		},
+		get RealContentHashPlugin() {
+			return require("./optimize/RealContentHashPlugin");
+		},
 		get RuntimeChunkPlugin() {
 			return require("./optimize/RuntimeChunkPlugin");
 		},

lib/optimize/RealContentHashPlugin.js

@@ -5,12 +5,15 @@
 
 "use strict";
 
+const { SyncBailHook } = require("tapable");
 const { RawSource, CachedSource, CompatSource } = require("webpack-sources");
 const Compilation = require("../Compilation");
 const WebpackError = require("../WebpackError");
 const { compareSelect, compareStrings } = require("../util/comparators");
 const createHash = require("../util/createHash");
 
+/** @typedef {import("webpack-sources").Source} Source */
+/** @typedef {import("../Compilation").AssetInfo} AssetInfo */
 /** @typedef {import("../Compiler")} Compiler */
 
 const EMPTY_SET = new Set();
@@ -47,7 +50,50 @@ const toCachedSource = source => {
 	return newSource;
 };
 
+/**
+ * @typedef {Object} AssetInfoForRealContentHash
+ * @property {string} name
+ * @property {AssetInfo} info
+ * @property {Source} source
+ * @property {RawSource | undefined} newSource
+ * @property {RawSource | undefined} newSourceWithoutOwn
+ * @property {string} content
+ * @property {Set<string>} ownHashes
+ * @property {Promise} contentComputePromise
+ * @property {Promise} contentComputeWithoutOwnPromise
+ * @property {Set<string>} referencedHashes
+ * @property {Set<string>} hashes
+ */
+
+/**
+ * @typedef {Object} CompilationHooks
+ * @property {SyncBailHook<[Buffer[], string], string>} updateHash
+ */
+
+/** @type {WeakMap<Compilation, CompilationHooks>} */
+const compilationHooksMap = new WeakMap();
+
 class RealContentHashPlugin {
+	/**
+	 * @param {Compilation} compilation the compilation
+	 * @returns {CompilationHooks} the attached hooks
+	 */
+	static getCompilationHooks(compilation) {
+		if (!(compilation instanceof Compilation)) {
+			throw new TypeError(
+				"The 'compilation' argument must be an instance of Compilation"
+			);
+		}
+		let hooks = compilationHooksMap.get(compilation);
+		if (hooks === undefined) {
+			hooks = {
+				updateHash: new SyncBailHook(["content", "oldHash"])
+			};
+			compilationHooksMap.set(compilation, hooks);
+		}
+		return hooks;
+	}
+
 	constructor({ hashFunction, hashDigest }) {
 		this._hashFunction = hashFunction;
 		this._hashDigest = hashDigest;
@@ -66,6 +112,7 @@ class RealContentHashPlugin {
 			const cacheGenerate = compilation.getCache(
 				"RealContentHashPlugin|generate"
 			);
+			const hooks = RealContentHashPlugin.getCompilationHooks(compilation);
 			compilation.hooks.processAssets.tapPromise(
 				{
 					name: "RealContentHashPlugin",
@@ -73,6 +120,7 @@ class RealContentHashPlugin {
 				},
 				async () => {
 					const assets = compilation.getAssets();
+					/** @type {AssetInfoForRealContentHash[]} */
 					const assetsWithInfo = [];
 					const hashToAssets = new Map();
 					for (const { source, info, name } of assets) {
@@ -87,9 +135,13 @@ class RealContentHashPlugin {
 							source: cachedSource,
 							/** @type {RawSource | undefined} */
 							newSource: undefined,
+							/** @type {RawSource | undefined} */
+							newSourceWithoutOwn: undefined,
 							content,
-							hasOwnHash: false,
+							/** @type {Set<string>} */
-							contentComputePromise: false,
+							ownHashes: undefined,
+							contentComputePromise: undefined,
+							contentComputeWithoutOwnPromise: undefined,
 							/** @type {Set<string>} */
 							referencedHashes: undefined,
 							hashes
@@ -114,6 +166,7 @@ class RealContentHashPlugin {
 							const { name, source, content, hashes } = asset;
 							if (Buffer.isBuffer(content)) {
 								asset.referencedHashes = EMPTY_SET;
+								asset.ownHashes = EMPTY_SET;
 								return;
 							}
 							const etag = cacheAnalyse.mergeEtags(
@@ -122,21 +175,21 @@ class RealContentHashPlugin {
 							);
 							[
 								asset.referencedHashes,
-								asset.hasOwnHash
+								asset.ownHashes
 							] = await cacheAnalyse.providePromise(name, etag, () => {
 								const referencedHashes = new Set();
-								let hasOwnHash = false;
+								let ownHashes = new Set();
 								const inContent = content.match(hashRegExp);
 								if (inContent) {
 									for (const hash of inContent) {
 										if (hashes.has(hash)) {
-											hasOwnHash = true;
+											ownHashes.add(hash);
 											continue;
 										}
 										referencedHashes.add(hash);
 									}
 								}
-								return [referencedHashes, hasOwnHash];
+								return [referencedHashes, ownHashes];
 							});
 						})
 					);
@@ -163,7 +216,12 @@ ${referencingAssets
 							return undefined;
 						}
 						const hashes = new Set();
-						for (const { referencedHashes } of assets) {
+						for (const { referencedHashes, ownHashes } of assets) {
+							if (!ownHashes.has(hash)) {
+								for (const hash of ownHashes) {
+									hashes.add(hash);
+								}
+							}
 							for (const hash of referencedHashes) {
 								hashes.add(hash);
 							}
@@ -199,32 +257,57 @@ ${referencingAssets
 						add(hash, new Set());
 					}
 					const hashToNewHash = new Map();
-					const computeNewContent = (asset, includeOwn) => {
+					const getEtag = asset =>
+						cacheGenerate.mergeEtags(
+							cacheGenerate.getLazyHashedEtag(asset.source),
+							Array.from(asset.referencedHashes, hash =>
+								hashToNewHash.get(hash)
+							).join("|")
+						);
+					const computeNewContent = asset => {
 						if (asset.contentComputePromise) return asset.contentComputePromise;
 						return (asset.contentComputePromise = (async () => {
 							if (
-								asset.hasOwnHash ||
+								asset.ownHashes.size > 0 ||
 								Array.from(asset.referencedHashes).some(
 									hash => hashToNewHash.get(hash) !== hash
 								)
 							) {
-								const identifier =
+								const identifier = asset.name;
-									asset.name +
+								const etag = getEtag(asset);
-									(includeOwn && asset.hasOwnHash ? "|with-own" : "");
-								const etag = cacheGenerate.mergeEtags(
-									cacheGenerate.getLazyHashedEtag(asset.source),
-									Array.from(asset.referencedHashes, hash =>
-										hashToNewHash.get(hash)
-									).join("|")
-								);
 								asset.newSource = await cacheGenerate.providePromise(
+									identifier,
+									etag,
+									() => {
+										const newContent = asset.content.replace(hashRegExp, hash =>
+											hashToNewHash.get(hash)
+										);
+										return new RawSource(newContent);
+									}
+								);
+							}
+						})());
+					};
+					const computeNewContentWithoutOwn = asset => {
+						if (asset.contentComputeWithoutOwnPromise)
+							return asset.contentComputeWithoutOwnPromise;
+						return (asset.contentComputeWithoutOwnPromise = (async () => {
+							if (
+								asset.ownHashes.size > 0 ||
+								Array.from(asset.referencedHashes).some(
+									hash => hashToNewHash.get(hash) !== hash
+								)
+							) {
+								const identifier = asset.name + "|without-own";
+								const etag = getEtag(asset);
+								asset.newSourceWithoutOwn = await cacheGenerate.providePromise(
 									identifier,
 									etag,
 									() => {
 										const newContent = asset.content.replace(
 											hashRegExp,
 											hash => {
-												if (!includeOwn && asset.hashes.has(hash)) {
+												if (asset.ownHashes.has(hash)) {
 													return "";
 												}
 												return hashToNewHash.get(hash);
@@ -241,25 +324,37 @@ ${referencingAssets
 						const assets = hashToAssets.get(oldHash);
 						assets.sort(comparator);
 						const hash = createHash(this._hashFunction);
-						await Promise.all(assets.map(computeNewContent));
+						await Promise.all(
-						for (const asset of assets) {
+							assets.map(asset =>
-							hash.update(
+								asset.ownHashes.has(oldHash)
-								asset.newSource
+									? computeNewContentWithoutOwn(asset)
+									: computeNewContent(asset)
+							)
+						);
+						const assetsContent = assets.map(asset => {
+							if (asset.ownHashes.has(oldHash)) {
+								return asset.newSourceWithoutOwn
+									? asset.newSourceWithoutOwn.buffer()
+									: asset.source.buffer();
+							} else {
+								return asset.newSource
 									? asset.newSource.buffer()
-									: asset.source.buffer()
+									: asset.source.buffer();
-							);
+							}
+						});
+						let newHash = hooks.updateHash.call(assetsContent, oldHash);
+						if (!newHash) {
+							for (const content of assetsContent) {
+								hash.update(content);
+							}
+							const digest = hash.digest(this._hashDigest);
+							newHash = /** @type {string} */ (digest.slice(0, oldHash.length));
 						}
-						const digest = hash.digest(this._hashDigest);
-						const newHash = digest.slice(0, oldHash.length);
 						hashToNewHash.set(oldHash, newHash);
 					}
 					await Promise.all(
 						assetsWithInfo.map(async asset => {
-							// recomputed content with it's own hash
+							await computeNewContent(asset);
-							if (asset.hasOwnHash) {
-								asset.contentComputePromise = undefined;
-							}
-							await computeNewContent(asset, true);
 							const newName = asset.name.replace(hashRegExp, hash =>
 								hashToNewHash.get(hash)
 							);

package.json

@@ -25,7 +25,7 @@
     "neo-async": "^2.6.2",
     "pkg-dir": "^4.2.0",
     "schema-utils": "^3.0.0",
-    "tapable": "^2.0.0",
+    "tapable": "^2.1.1",
     "terser-webpack-plugin": "^5.0.3",
     "watchpack": "^2.0.0",
     "webpack-sources": "^2.1.1"

test/configCases/process-assets/html-plugin/index.js

@@ -0,0 +1,28 @@
+const crypto = require("crypto");
+const fs = require("fs");
+const path = require("path");
+
+it("should result in the correct HTML", () => {
+	const content = fs.readFileSync(
+		path.resolve(__dirname, "index.html"),
+		"utf-8"
+	);
+
+	// check minimized
+	expect(content).toMatch(/<\/script> <script/);
+
+	// check inlined js is minimized
+	expect(content).toMatch(/For license information please see inline-/);
+
+	// contains references to normal-[contenthash].js
+	expect(content).toMatch(/normal-.{20}\.js/);
+
+	const [filename] = /normal-.{20}\.js/.exec(content);
+	const normalJs = fs.readFileSync(path.resolve(__dirname, filename));
+	const hash = crypto.createHash("sha512");
+	hash.update(normalJs);
+	const digest = hash.digest("base64");
+
+	// SRI has been updated and matched content
+	expect(content).toContain(digest);
+});

test/configCases/process-assets/html-plugin/inline.js

@@ -0,0 +1 @@
+console.log("inline");

test/configCases/process-assets/html-plugin/normal.js

@@ -0,0 +1 @@
+console.log("normal");

test/configCases/process-assets/html-plugin/test.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+	findBundle: function () {
+		return "./test.js";
+	}
+};

test/configCases/process-assets/html-plugin/webpack.config.js

@@ -0,0 +1,189 @@
+const {
+	sources: { RawSource, OriginalSource, ReplaceSource },
+	Compilation,
+	util: { createHash },
+	optimize: { RealContentHashPlugin }
+} = require("../../../../");
+
+class HtmlPlugin {
+	constructor(entrypoints) {
+		this.entrypoints = entrypoints;
+	}
+
+	apply(compiler) {
+		compiler.hooks.compilation.tap("html-plugin", compilation => {
+			compilation.hooks.processAssets.tap(
+				{
+					name: "html-plugin",
+					stage: Compilation.PROCESS_ASSETS_STAGE_ADDITIONAL
+				},
+				() => {
+					const publicPath = compilation.outputOptions.publicPath;
+					const files = [];
+					for (const name of this.entrypoints) {
+						for (const file of compilation.entrypoints.get(name).getFiles())
+							files.push(file);
+					}
+					const toScriptTag = (file, extra) => {
+						const asset = compilation.getAsset(file);
+						const hash = createHash("sha512");
+						hash.update(asset.source.source());
+						const integrity = `sha512-${hash.digest("base64")}`;
+						compilation.updateAsset(
+							file,
+							x => x,
+							assetInfo => ({
+								...assetInfo,
+								contenthash: Array.isArray(assetInfo.contenthash)
+									? [...new Set([...assetInfo.contenthash, integrity])]
+									: assetInfo.contenthash
+									? [assetInfo.contenthash, integrity]
+									: integrity
+							})
+						);
+						return `<script src="${
+							publicPath === "auto" ? "" : publicPath
+						}${file}" integrity="${integrity}"></script>`;
+					};
+					compilation.emitAsset(
+						"index.html",
+						new OriginalSource(
+							`<html>
+	<body>
+${files.map(file => `		${toScriptTag(file)}`).join("\n")}
+	</body>
+</html>`,
+							"index.html"
+						)
+					);
+				}
+			);
+		});
+	}
+}
+
+class HtmlInlinePlugin {
+	constructor(inline) {
+		this.inline = inline;
+	}
+
+	apply(compiler) {
+		compiler.hooks.compilation.tap("html-inline-plugin", compilation => {
+			compilation.hooks.processAssets.tap(
+				{
+					name: "html-inline-plugin",
+					stage: Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE_INLINE,
+					additionalAssets: true
+				},
+				assets => {
+					const publicPath = compilation.outputOptions.publicPath;
+					for (const name of Object.keys(assets)) {
+						if (/\.html$/.test(name)) {
+							const asset = compilation.getAsset(name);
+							const content = asset.source.source();
+							const matches = [];
+							const regExp = /<script\s+src\s*=\s*"([^"]+)"(?:\s+[^"=\s]+(?:\s*=\s*(?:"[^"]*"|[^\s]+))?)*\s*><\/script>/g;
+							let match = regExp.exec(content);
+							while (match) {
+								let url = match[1];
+								if (url.startsWith(publicPath))
+									url = url.slice(publicPath.length);
+								if (this.inline.test(url)) {
+									const asset = compilation.getAsset(url);
+									matches.push({
+										start: match.index,
+										length: match[0].length,
+										asset
+									});
+								}
+								match = regExp.exec(content);
+							}
+							if (matches.length > 0) {
+								const newSource = new ReplaceSource(asset.source, name);
+								for (const { start, length, asset } of matches) {
+									newSource.replace(
+										start,
+										start + length - 1,
+										`<script>${asset.source.source()}</script>`
+									);
+								}
+								compilation.updateAsset(name, newSource);
+							}
+						}
+					}
+				}
+			);
+		});
+	}
+}
+
+class SriHashSupportPlugin {
+	apply(compiler) {
+		compiler.hooks.compilation.tap("sri-hash-support-plugin", compilation => {
+			RealContentHashPlugin.getCompilationHooks(compilation).updateHash.tap(
+				"sri-hash-support-plugin",
+				(input, oldHash) => {
+					if (/^sha512-.{88}$/.test(oldHash) && input.length === 1) {
+						const hash = createHash("sha512");
+						hash.update(input[0]);
+						return `sha512-${hash.digest("base64")}`;
+					}
+				}
+			);
+		});
+	}
+}
+
+class HtmlMinimizePlugin {
+	apply(compiler) {
+		compiler.hooks.compilation.tap("html-minimize-plugin", compilation => {
+			compilation.hooks.processAssets.tap(
+				{
+					name: "html-minimize-plugin",
+					stage: Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE_SIZE,
+					additionalAssets: true
+				},
+				assets => {
+					for (const name of Object.keys(assets)) {
+						if (/\.html$/.test(name)) {
+							compilation.updateAsset(
+								name,
+								source => new RawSource(source.source().replace(/\s+/g, " ")),
+								assetInfo => ({
+									...assetInfo,
+									minimized: true
+								})
+							);
+						}
+					}
+				}
+			);
+		});
+	}
+}
+
+/** @type {import("../../../../").Configuration} */
+module.exports = {
+	mode: "production",
+	entry: {
+		test: { import: "./index.js", filename: "test.js" },
+		inline: "./inline.js",
+		normal: "./normal.js"
+	},
+	output: {
+		filename: "[name]-[contenthash].js"
+	},
+	optimization: {
+		minimize: true,
+		minimizer: ["...", new HtmlMinimizePlugin()]
+	},
+	node: {
+		__dirname: false,
+		__filename: false
+	},
+	plugins: [
+		new HtmlPlugin(["inline", "normal"]),
+		new HtmlInlinePlugin(/inline/),
+		new SriHashSupportPlugin()
+	]
+};

types.d.ts

@@ -1229,10 +1229,17 @@ declare class Compilation {
 			"tap" | "tapAsync" | "tapPromise" | "name"
 		> &
 			FakeHookMarker;
-		optimizeAssets: AsyncSeriesHook<[Record<string, Source>]>;
+		optimizeAssets: AsyncSeriesHook<
+			[Record<string, Source>],
+			{ additionalAssets?: true | Function }
+		>;
 		afterOptimizeAssets: SyncHook<[Record<string, Source>]>;
-		processAssets: AsyncSeriesHook<[Record<string, Source>]>;
+		processAssets: AsyncSeriesHook<
+			[Record<string, Source>],
+			{ additionalAssets?: true | Function }
+		>;
 		afterProcessAssets: SyncHook<[Record<string, Source>]>;
+		processAdditionalAssets: AsyncSeriesHook<[Record<string, Source>]>;
 		needAdditionalSeal: SyncBailHook<[], boolean>;
 		afterSeal: AsyncSeriesHook<[]>;
 		renderManifest: SyncWaterfallHook<
@@ -1536,6 +1543,8 @@ declare class Compilation {
 
 	/**
 	 * Optimize the count of existing assets, e. g. by merging them.
+	 * Only assets of the same type should be merged.
+	 * For assets of different types see PROCESS_ASSETS_STAGE_OPTIMIZE_INLINE.
 	 */
 	static PROCESS_ASSETS_STAGE_OPTIMIZE_COUNT: number;
 
@@ -1549,18 +1558,24 @@ declare class Compilation {
 	 */
 	static PROCESS_ASSETS_STAGE_OPTIMIZE_SIZE: number;
 
-	/**
-	 * Summarize the list of existing assets.
-	 * When creating new assets from this they should be fully optimized.
-	 * e. g. creating an assets manifest of Service Workers.
-	 */
-	static PROCESS_ASSETS_STAGE_SUMMARIZE: number;
-
 	/**
 	 * Add development tooling to assets, e. g. by extracting a SourceMap.
 	 */
 	static PROCESS_ASSETS_STAGE_DEV_TOOLING: number;
 
+	/**
+	 * Optimize the count of existing assets, e. g. by inlining assets of into other assets.
+	 * Only assets of different types should be inlined.
+	 * For assets of the same type see PROCESS_ASSETS_STAGE_OPTIMIZE_COUNT.
+	 */
+	static PROCESS_ASSETS_STAGE_OPTIMIZE_INLINE: number;
+
+	/**
+	 * Summarize the list of existing assets
+	 * e. g. creating an assets manifest of Service Workers.
+	 */
+	static PROCESS_ASSETS_STAGE_SUMMARIZE: number;
+
 	/**
 	 * Optimize the hashes of the assets, e. g. by generating real hashes of the asset content.
 	 */
@@ -1597,6 +1612,9 @@ declare interface CompilationHooksJavascriptModulesPlugin {
 	chunkHash: SyncHook<[Chunk, Hash, ChunkHashContext]>;
 	useSourceMap: SyncBailHook<[Chunk, RenderContextObject], boolean>;
 }
+declare interface CompilationHooksRealContentHashPlugin {
+	updateHash: SyncBailHook<[Buffer[], string], string>;
+}
 declare interface CompilationParams {
 	normalModuleFactory: NormalModuleFactory;
 	contextModuleFactory: ContextModuleFactory;
@@ -5665,7 +5683,7 @@ declare abstract class NormalModuleFactory extends ModuleFactory {
 		beforeResolve: AsyncSeriesBailHook<[ResolveData], any>;
 		afterResolve: AsyncSeriesBailHook<[ResolveData], any>;
 		createModule: AsyncSeriesBailHook<[any, ResolveData], any>;
-		module: SyncWaterfallHook<[Module, any, ResolveData]>;
+		module: SyncWaterfallHook<[Module, any, ResolveData], any>;
 		createParser: HookMap<SyncBailHook<any, any>>;
 		parser: HookMap<SyncHook<any>>;
 		createGenerator: HookMap<SyncBailHook<any, any>>;
@@ -6888,6 +6906,17 @@ declare class ReadFileCompileWasmPlugin {
 	 */
 	apply(compiler: Compiler): void;
 }
+declare class RealContentHashPlugin {
+	constructor(__0: { hashFunction: any; hashDigest: any });
+
+	/**
+	 * Apply the plugin
+	 */
+	apply(compiler: Compiler): void;
+	static getCompilationHooks(
+		compilation: Compilation
+	): CompilationHooksRealContentHashPlugin;
+}
 declare interface RealDependencyLocation {
 	start: SourcePosition;
 	end?: SourcePosition;
@@ -10220,6 +10249,7 @@ declare namespace exports {
 			LimitChunkCountPlugin,
 			MinChunkSizePlugin,
 			ModuleConcatenationPlugin,
+			RealContentHashPlugin,
 			RuntimeChunkPlugin,
 			SideEffectsFlagPlugin,
 			SplitChunksPlugin

yarn.lock

@@ -6221,10 +6221,10 @@ tapable@^1.0.0:
   resolved "https://registry.yarnpkg.com/tapable/-/tapable-1.1.3.tgz#a1fccc06b58db61fd7a45da2da44f5f3a3e67ba2"
   integrity sha512-4WK/bYZmj8xLr+HUCODHGF1ZFzsYffasLUgEiMBY4fgtltdO6B4WJtlSbPaDTLpYTcGVwM2qLnFTICEcNxs3kA==
 
-tapable@^2.0.0:
+tapable@^2.0.0, tapable@^2.1.1:
-  version "2.0.0"
+  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/tapable/-/tapable-2.0.0.tgz#a49c3d6a8a2bb606e7db372b82904c970d537a08"
+  resolved "https://registry.yarnpkg.com/tapable/-/tapable-2.1.1.tgz#b01cc1902d42a7bb30514e320ce21c456f72fd3f"
-  integrity sha512-bjzn0C0RWoffnNdTzNi7rNDhs1Zlwk2tRXgk8EiHKAOX1Mag3d6T0Y5zNa7l9CJ+EoUne/0UHdwS8tMbkh9zDg==
+  integrity sha512-Wib1S8m2wdpLbmQz0RBEVosIyvb/ykfKXf3ZIDqvWoMg/zTNm6G/tDSuUM61J1kNCDXWJrLHGSFeMhAG+gAGpQ==
 
 temp-dir@^1.0.0:
   version "1.0.0"