fix(babel preset): allow setting useBuiltIns to be false. (#843)

zigomir · yyx990803 · commit a9ac1a9a9eb3 · 2018-02-16T04:02:47.000+01:00
diff --git a/packages/@vue/babel-preset-app/index.js b/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: options.useBuiltIns || 'usage'
+    useBuiltIns: typeof options.useBuiltIns === 'undefined' ? 'usage' : options.useBuiltIns
   }
   delete envOptions.jsx
   // target running node version (this is set by unit testing plugins)

Original file line number	Diff line number	Diff line change
`@@ -17,7 +17,7 @@ module.exports = (context, options = {}) => {`
`17`	`17`	`const envOptions = {`
`18`	`18`	`modules: options.modules \|\| false,`
`19`	`19`	`targets: options.targets,`
`20`		`- useBuiltIns: options.useBuiltIns \|\| 'usage'`
	`20`	`+ useBuiltIns: typeof options.useBuiltIns === 'undefined' ? 'usage' : options.useBuiltIns`
`21`	`21`	`}`
`22`	`22`	`delete envOptions.jsx`
`23`	`23`	`// target running node version (this is set by unit testing plugins)`