Restored default use of the Babel polyfill in Karma config

insin · May 27, 2016 · d52a857 · d52a857
1 parent 47edc83
commit d52a857
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diff --git a/CHANGES.md b/CHANGES.md
@@ -1,3 +1,7 @@
+**Changed:**
+
+- Restored default use of the Babel polyfill in Karma config so tests can assume a more-or-less ES2015 environment.
+
 # 0.10.0 / 2016-05-16
 
 **Breaking Changes:**

diff --git a/src/createKarmaConfig.js b/src/createKarmaConfig.js
@@ -129,6 +129,7 @@ export default function({codeCoverage, singleRun}, userConfig) {
   let {plugins, frameworks, reporters, extraLoaders} = getKarmaConfig({codeCoverage}, userConfig)
   let testFiles = path.resolve(userKarma.tests || DEFAULT_TESTS)
   let preprocessors = {
+    [require.resolve('babel-core/lib/polyfill')]: ['webpack'],
     [testFiles]: ['webpack', 'sourcemap']
   }
 
@@ -159,7 +160,10 @@ export default function({codeCoverage, singleRun}, userConfig) {
         {type: 'lcovonly', subdir: '.'}
       ]
     },
-    files: [testFiles],
+    files: [
+      require.resolve('babel-core/lib/polyfill'),
+      testFiles
+    ],
     frameworks,
     mochaReporter: {
       showDiff: true