mirror of https://github.com/webpack/webpack.git
76 lines
2.2 KiB
JavaScript
76 lines
2.2 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const { validate } = require("schema-utils");
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const schema = require("../../schemas/plugins/HashedModuleIdsPlugin.json");
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const {
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compareModulesByPreOrderIndexOrIdentifier
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} = require("../util/comparators");
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const createHash = require("../util/createHash");
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const { getUsedModuleIds, getFullModuleName } = require("./IdHelpers");
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/** @typedef {import("../../declarations/plugins/HashedModuleIdsPlugin").HashedModuleIdsPluginOptions} HashedModuleIdsPluginOptions */
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class HashedModuleIdsPlugin {
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/**
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* @param {HashedModuleIdsPluginOptions=} options options object
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*/
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constructor(options = {}) {
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validate(schema, options, {
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name: "Hashed Module Ids Plugin",
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baseDataPath: "options"
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});
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/** @type {HashedModuleIdsPluginOptions} */
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this.options = {
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context: null,
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hashFunction: "md4",
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hashDigest: "base64",
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hashDigestLength: 4,
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...options
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};
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}
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apply(compiler) {
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const options = this.options;
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compiler.hooks.compilation.tap("HashedModuleIdsPlugin", compilation => {
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compilation.hooks.moduleIds.tap("HashedModuleIdsPlugin", modules => {
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const chunkGraph = compilation.chunkGraph;
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const context = this.options.context
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? this.options.context
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: compiler.context;
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const usedIds = getUsedModuleIds(compilation);
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const modulesInNaturalOrder = Array.from(modules)
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.filter(m => {
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if (!m.needId) return false;
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if (chunkGraph.getNumberOfModuleChunks(m) === 0) return false;
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return chunkGraph.getModuleId(module) === null;
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})
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.sort(
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compareModulesByPreOrderIndexOrIdentifier(compilation.moduleGraph)
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);
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for (const module of modulesInNaturalOrder) {
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const ident = getFullModuleName(module, context, compiler.root);
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const hash = createHash(options.hashFunction);
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hash.update(ident || "");
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const hashId = /** @type {string} */ (hash.digest(
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options.hashDigest
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));
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let len = options.hashDigestLength;
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while (usedIds.has(hashId.substr(0, len))) len++;
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const moduleId = hashId.substr(0, len);
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chunkGraph.setModuleId(module, moduleId);
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usedIds.add(moduleId);
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}
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});
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});
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}
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}
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module.exports = HashedModuleIdsPlugin;
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