From da6cbe212aec8bcd2f55f4b0d9c4c92792266786 Mon Sep 17 00:00:00 2001
From: lmk123 <me@limingkai.cn>
Date: Mon, 12 Dec 2016 03:07:12 +0800
Subject: [PATCH] use HashedModuleIdsPlugin to keep module ids consistent

---
 template/build/HashedModuleIdsPlugin.js | 35 +++++++++++++++++++++++++
 template/build/webpack.prod.conf.js     |  3 ++-
 2 files changed, 37 insertions(+), 1 deletion(-)
 create mode 100644 template/build/HashedModuleIdsPlugin.js

diff --git a/template/build/HashedModuleIdsPlugin.js b/template/build/HashedModuleIdsPlugin.js
new file mode 100644
index 0000000000..5e82971818
--- /dev/null
+++ b/template/build/HashedModuleIdsPlugin.js
@@ -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));
+};
diff --git a/template/build/webpack.prod.conf.js b/template/build/webpack.prod.conf.js
index c0f9d7ecbb..cc87bc7232 100644
--- a/template/build/webpack.prod.conf.js
+++ b/template/build/webpack.prod.conf.js
@@ -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
@@ -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.