resolve .ts files as well as .js files

Author: koddsson

lib/configs/es6.js

@@ -40,5 +40,12 @@ module.exports = {
     'prefer-spread': 'error',
     'prefer-template': 'error'
   },
+  settings: {
+    'import/resolver': {
+      node: {
+        extensions: ['.js', '.ts']
+      }
+    }
+  },
   extends: [require.resolve('./recommended')]
 }