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node_modules/@dcloudio/uni-mp-weixin/lib/createIndependentPlugin.js

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+const AddShareAbilityToRuntimePlugin = require('./independent-plugins/add-share-ability-to-runtime-plugin')
+const GenerateIndepndentEntryPlugin = require('./independent-plugins/generate-indepndent-entry-plugin')
+const InjectEntryJsToIndependentPlugin = require('./independent-plugins/inject-entry-to-independent-plugin')
+const InjectMainCssToIndependentCssPlugin = require('./independent-plugins/inject-main-css-to-independent-plugin')
+const RunDefaultAppPlugin = require('./independent-plugins/run-default-app-plugin')
+const SplitIndependentChunksPlugin = require('./independent-plugins/split-independent-chunks-plugin')
+const ModifyUniAppWebpackConfigPlugin = require('./independent-plugins/modify-uniapp-webpack-config-Plugin')
+const AddWxMpRuntimePlugin = require('./independent-plugins/add-weixin-mp-runtime-plugin')
+const AppInterceptorPlugin = require('./independent-plugins/app-interceptor-plugin')
+
+module.exports = function createIndependentPlugins () {
+  const manifestConfig = process.UNI_MANIFEST
+  const weixinConfig = manifestConfig['mp-weixin'] || {}
+  const independentSwitch = !!weixinConfig.independent
+  if (!independentSwitch) return []
+
+  // 支持构造微信小程序的独立分包
+  const independentPlugins = [
+    new SplitIndependentChunksPlugin(),
+    new ModifyUniAppWebpackConfigPlugin(), // 修改 webpack配置
+    new AddShareAbilityToRuntimePlugin(), // 保证独立分包和主包使用的相同的runtime.js
+    new GenerateIndepndentEntryPlugin(), // 生成独立分包执行入口文件（代替app.js
+    new InjectEntryJsToIndependentPlugin(), // 为独立分包注入执行入口
+    new RunDefaultAppPlugin(), // 确保app.js中的App()被执行一次
+    // 独立分包中 App,getApp 调用拦截
+    new AddWxMpRuntimePlugin(),
+    new AppInterceptorPlugin()
+  ]
+
+  const insertAppCssToIndependentSwitch = !!weixinConfig.insertAppCssToIndependent
+  if (insertAppCssToIndependentSwitch) {
+    // 需要在 cacheSet 后面
+    independentPlugins.push(new InjectMainCssToIndependentCssPlugin()) // 目前只对页面注入了，组件未注入
+  }
+
+  return independentPlugins
+}