64 lines
1.7 KiB
JavaScript
64 lines
1.7 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
"use strict";
|
|
const createHash = require("./util/createHash");
|
|
|
|
const validateOptions = require("schema-utils");
|
|
const schema = require("../schemas/plugins/HashedModuleIdsPlugin.json");
|
|
|
|
/** @typedef {import("../declarations/plugins/HashedModuleIdsPlugin").HashedModuleIdsPluginOptions} HashedModuleIdsPluginOptions */
|
|
|
|
class HashedModuleIdsPlugin {
|
|
/**
|
|
* @param {HashedModuleIdsPluginOptions=} options options object
|
|
*/
|
|
constructor(options) {
|
|
if (!options) 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 => {
|
|
for (const module of modules) {
|
|
if (module.id === null && module.libIdent) {
|
|
const id = module.libIdent({
|
|
context: this.options.context || compiler.options.context
|
|
});
|
|
const hash = createHash(options.hashFunction);
|
|
hash.update(id);
|
|
const hashId = /** @type {string} */ (hash.digest(
|
|
options.hashDigest
|
|
));
|
|
let len = options.hashDigestLength;
|
|
while (usedIds.has(hashId.substr(0, len))) len++;
|
|
module.id = hashId.substr(0, len);
|
|
usedIds.add(module.id);
|
|
}
|
|
}
|
|
}
|
|
);
|
|
});
|
|
}
|
|
}
|
|
|
|
module.exports = HashedModuleIdsPlugin;
|