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