feat: 增加tree shaking特性.

Author: cpselvis

lib/builder.js

@@ -88,7 +88,7 @@ class Builder extends BuilderCore {
         // 设置NODE_ENV 为 development
         devPlugins.push(this.setDefinePlugin('development'));
         // 多实例构建
-        devPlugins.push(this.setHappyPack(options.jsLoader));
+        devPlugins.push(this.setHappyPack(options.jsLoader, options.useTreeShaking));
         // 增加热更新组件
         devPlugins.push(new webpack.HotModuleReplacementPlugin());
         // 抽离公共js
@@ -191,7 +191,7 @@ class Builder extends BuilderCore {
         // 设置NODE_ENV 为 production
         prodPlugins.push(this.setDefinePlugin('production'));
         // 多实例构建
-        prodPlugins.push(this.setHappyPack(options.jsLoader));
+        prodPlugins.push(this.setHappyPack(options.jsLoader, options.useTreeShaking));
         // 抽离公共js
         //prodPlugins.push(this.setCommonsChunkPlugin());
         // 支持Fis3的 inline 语法糖 多页面打包, 默认压缩html

package.json

@@ -1,6 +1,6 @@
 {
   "name": "builder-webpack3",
-  "version": "0.4.3",
+  "version": "0.4.4",
   "description": "webpack项目构建器.",
   "main": "lib/index.js",
   "scripts": {