Babel 7 (twbs#23966)

* use .babelrc.js, compile bundled/non-bundled with loose mode * add back helper, exclude typeof transform
Shehab2121 · Sep 17, 2017 · f17b165 · f17b165
1 parent 5cec8e0
commit f17b165
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Showing 5 changed files with 1,746 additions and 743 deletions.
diff --git a/.babelrc b/.babelrc
diff --git a/.babelrc.js b/.babelrc.js
@@ -0,0 +1,16 @@
+module.exports = {
+  presets: [
+    [
+      'env',
+      {
+        loose: true,
+        modules: false,
+        exclude: ['transform-es2015-typeof-symbol']
+      }
+    ]
+  ],
+  plugins: [
+    process.env.ROLLUP && 'external-helpers',
+    process.env.PLUGINS && 'transform-es2015-modules-strip',
+  ].filter(Boolean)
+};
diff --git a/build/rollup.config.js b/build/rollup.config.js
@@ -11,11 +11,9 @@ const plugins = [
   babel({
     exclude: 'node_modules/**', // only transpile our source code
     externalHelpersWhitelist: [ // include only required helpers
-      'typeof',
-      'classCallCheck',
+      'defineProperties',
       'createClass',
-      'inherits',
-      'possibleConstructorReturn'
+      'inheritsLoose'
     ]
   })
 ]