青岛推送

WXL

3 天以前 9bce51f651aad297ef9eb6df832bfdaf1de05d84

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/*
    MIT License http://www.opensource.org/licenses/mit-license.php
    Author Tobias Koppers @sokra
*/
 
"use strict";
 
const { DEFAULTS } = require("../config/defaults");
const {
    compareModulesByPreOrderIndexOrIdentifier
} = require("../util/comparators");
const createHash = require("../util/createHash");
const {
    getFullModuleName,
    getUsedModuleIdsAndModules
} = require("./IdHelpers");
 
/** @typedef {import("../../declarations/plugins/ids/HashedModuleIdsPlugin").HashedModuleIdsPluginOptions} HashedModuleIdsPluginOptions */
/** @typedef {import("../Compiler")} Compiler */
 
const PLUGIN_NAME = "HashedModuleIdsPlugin";
 
class HashedModuleIdsPlugin {
    /**
     * Creates an instance of HashedModuleIdsPlugin.
     * @param {HashedModuleIdsPluginOptions=} options options object
     */
    constructor(options = {}) {
        /** @type {HashedModuleIdsPluginOptions} */
        this.options = options;
    }
 
    /**
     * Applies the plugin by registering its hooks on the compiler.
     * @param {Compiler} compiler the compiler instance
     * @returns {void}
     */
    apply(compiler) {
        compiler.hooks.validate.tap(PLUGIN_NAME, () => {
            compiler.validate(
                () => require("../../schemas/plugins/ids/HashedModuleIdsPlugin.json"),
                this.options,
                {
                    name: "Hashed Module Ids Plugin",
                    baseDataPath: "options"
                },
                (options) =>
                    require("../../schemas/plugins/ids/HashedModuleIdsPlugin.check")(
                        options
                    )
            );
        });
        compiler.hooks.compilation.tap(PLUGIN_NAME, (compilation) => {
            compilation.hooks.moduleIds.tap(PLUGIN_NAME, () => {
                const chunkGraph = compilation.chunkGraph;
                const context = this.options.context
                    ? this.options.context
                    : compiler.context;
 
                const [usedIds, modules] = getUsedModuleIdsAndModules(compilation);
                const modulesInNaturalOrder = modules.sort(
                    compareModulesByPreOrderIndexOrIdentifier(compilation.moduleGraph)
                );
                for (const module of modulesInNaturalOrder) {
                    const ident = getFullModuleName(module, context, compiler.root);
                    const hash = createHash(
                        this.options.hashFunction || DEFAULTS.HASH_FUNCTION
                    );
                    hash.update(ident || "");
                    const hashId = hash.digest(this.options.hashDigest || "base64");
                    let len = this.options.hashDigestLength || 4;
                    while (usedIds.has(hashId.slice(0, len))) {
                        /** @type {number} */ (len)++;
                    }
                    const moduleId = hashId.slice(0, len);
                    chunkGraph.setModuleId(module, moduleId);
                    usedIds.add(moduleId);
                }
            });
        });
    }
}
 
module.exports = HashedModuleIdsPlugin;