[eslint config] [base] [fix] Prevent trailing commas in the legacy config.

ljharb · ljharb · commit b352ec6a4a8f · 2016-07-11T23:37:51.000-07:00
Fixes airbnb#950.
diff --git a/packages/eslint-config-airbnb-base/legacy.js b/packages/eslint-config-airbnb-base/legacy.js
@@ -15,5 +15,7 @@ module.exports = {
   },
   ecmaFeatures: {},
   globals: {},
-  rules: {}
+  rules: {
+    'comma-dangle': [2, 'never']
+  }
 };
