diff --git a/packages/env/index.js b/packages/env/index.js
index 78d344f6e..13f92d2ad 100644
--- a/packages/env/index.js
+++ b/packages/env/index.js
@@ -1,5 +1,20 @@
 const { EnvironmentPlugin } = require('webpack');
 
-module.exports = ({ config }, envs = []) => config
-  .plugin('env')
-  .use(EnvironmentPlugin, ['NODE_ENV', ...envs]);
+module.exports = ({ config }, envs = []) => {
+  let pluginOptions;
+
+  if (Array.isArray(envs)) {
+    pluginOptions = ['NODE_ENV', ...envs];
+  }
+  else {
+    pluginOptions = [
+      Object.assign({
+        NODE_ENV: 'development'
+      }, envs)
+    ];
+  }
+
+  config
+    .plugin('env')
+    .use(EnvironmentPlugin, pluginOptions);
+};