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use HashedModuleIdsPlugin to keep module ids consistent #406

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use HashedModuleIdsPlugin to keep module ids consistent #406

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35 changes: 35 additions & 0 deletions template/build/HashedModuleIdsPlugin.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,35 @@
// from https://github.com/webpack/webpack/blob/master/lib/HashedModuleIdsPlugin.js
/*
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));
}.bind(this));
};
3 changes: 2 additions & 1 deletion template/build/webpack.prod.conf.js
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Expand Up @@ -6,6 +6,7 @@ var merge = require('webpack-merge')
var baseWebpackConfig = require('./webpack.base.conf')
var ExtractTextPlugin = require('extract-text-webpack-plugin')
var HtmlWebpackPlugin = require('html-webpack-plugin')
var HashedModuleIdsPlugin = require('./HashedModuleIdsPlugin')
var env = {{#if_or unit e2e}}process.env.NODE_ENV === 'testing'
? require('../config/test.env')
: {{/if_or}}config.build.env
Expand Down Expand Up @@ -36,7 +37,7 @@ var webpackConfig = merge(baseWebpackConfig, {
warnings: false
}
}),
new webpack.optimize.OccurrenceOrderPlugin(),
new HashedModuleIdsPlugin(),
// extract css into its own file
new ExtractTextPlugin(utils.assetsPath('css/[name].[contenthash].css')),
// generate dist index.html with correct asset hash for caching.
Expand Down