feat: expose useBuiltIns options in @vue/babel-preset-app

close #812

Author: yyx990803

packages/@vue/babel-preset-app/README.md

@@ -31,15 +31,21 @@ This is the default Babel preset used in all Vue CLI projects.
   - `false` when building with webpack
   - `'commonjs'` when running tests in Jest.
 
-  Explicitly set `modules` option for `babel-preset-env`.
+  Explicitly set `modules` option for `babel-preset-env`. See [babel-preset-env docs](https://github.com/babel/babel/tree/master/packages/babel-preset-env#modules) for more details.
 
 - **targets**
 
   Default:
   - determined from `browserslist` field in `package.json` when building for browsers
   - set to `{ node: 'current' }` when running unit tests in Node.js
 
-  Explicitly set `targets` option for `babel-preset-env`.
+  Explicitly set `targets` option for `babel-preset-env`. See [babel-preset-env docs](https://github.com/babel/babel/tree/master/packages/babel-preset-env#targets) for more details.
+
+- **useBuiltIns**
+
+  Default: `'usage'`
+
+  Explicitly set `useBuiltIns` option for `babel-preset-env`. See [babel-preset-env docs](https://github.com/babel/babel/tree/master/packages/babel-preset-env#usebuiltins) for more details.
 
 - **jsx**
 

packages/@vue/babel-preset-app/index.js

@@ -17,7 +17,7 @@ module.exports = (context, options = {}) => {
   const envOptions = {
     modules: options.modules || false,
     targets: options.targets,
-    useBuiltIns: 'usage'
+    useBuiltIns: options.useBuiltIns || 'usage'
   }
   delete envOptions.jsx
   // target running node version (this is set by unit testing plugins)