webpack/lib/HashedModuleIdsPlugin.js at master · codeinvain/webpack · GitHub

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MIT License http://www.opensource.org/licenses/mit-license.php

Author Tobias Koppers @sokra

function HashedModuleIdsPlugin(options) {

this.options = options || {};

this.options.hashFunction = this.options.hashFunction || "md5";

this.options.hashDigest = this.options.hashDigest || "base64";

this.options.hashDigestLength = this.options.hashDigestLength || 4;

}

module.exports = HashedModuleIdsPlugin;

HashedModuleIdsPlugin.prototype.apply = function(compiler) {

var options = this.options;

compiler.plugin("compilation", function(compilation) {

var usedIds = {};

compilation.plugin("before-module-ids", function(modules) {

modules.forEach(function(module) {

if(module.id === null && module.libIdent) {

var id = module.libIdent({

context: this.options.context || compiler.options.context

});

var hash = require("crypto").createHash(options.hashFunction);

hash.update(id);

id = hash.digest(options.hashDigest);

var len = options.hashDigestLength;

while(usedIds[id.substr(0, len)])

len++;

module.id = id.substr(0, len);

usedIds[module.id] = true;

}

}, this);

}.bind(this));

};