mirror of https://github.com/webpack/webpack.git
49 lines
1.3 KiB
JavaScript
49 lines
1.3 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");
|
|
|
|
class HashedModuleIdsPlugin {
|
|
constructor(options) {
|
|
validateOptions(schema, options || {}, "Hashed Module Ids Plugin");
|
|
|
|
this.options = Object.assign({
|
|
context: null,
|
|
hashFunction: "md5",
|
|
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 = 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;
|