Restore #292

Author: KyleAMathews

lib/utils/babel-config.js

@@ -3,6 +3,7 @@ import fs from 'fs'
 import path from 'path'
 import json5 from 'json5'
 import startsWith from 'lodash/startsWith'
+import isArray from 'lodash/isArray'
 import objectAssign from 'object-assign'
 import invariant from 'invariant'
 
@@ -63,7 +64,15 @@ function normalizeConfig (config, directory) {
 
   const plugins = config.plugins || []
   plugins.forEach(plugin => {
-    normalizedConfig.plugins.push(resolvePlugin(plugin, directory, 'plugin'))
+    let normalizedPlugin
+
+    if (isArray(plugin)) {
+      normalizedPlugin = [resolvePlugin(plugin[0], directory, 'plugin'), plugin[1]]
+    } else {
+      normalizedPlugin = resolvePlugin(plugin, directory, 'plugin')
+    }
+
+    normalizedConfig.plugins.push(normalizedPlugin)
   })
 
   return objectAssign({}, config, normalizedConfig)