feat: enable tree-shaking (#3350)

* feat: enable tree-shaking

* bump umi's version to disable netlify's cache

config/config.js

@@ -20,6 +20,7 @@ const plugins = [
       },
       dynamicImport: {
         loadingComponent: './components/PageLoading/index',
+        webpackChunkName: true,
       },
       pwa: {
         workboxPluginMode: 'InjectManifest',
@@ -57,6 +58,7 @@ export default {
   define: {
     APP_TYPE: process.env.APP_TYPE || '',
   },
+  treeShaking: true,
   targets: {
     ie: 11,
   },

package.json

@@ -95,9 +95,9 @@
     "tslint": "^5.10.0",
     "tslint-config-prettier": "^1.10.0",
     "tslint-react": "^3.6.0",
-    "umi": "^2.3.1",
+    "umi": "^2.3.5",
     "umi-plugin-ga": "^1.1.3",
-    "umi-plugin-react": "^1.2.0"
+    "umi-plugin-react": "^1.3.4"
   },
   "optionalDependencies": {
     "puppeteer": "^1.10.0"