fix(webpack): fix derivation of __DEV__ from NODE_ENV (#99)

Author: lbland94

src/webpack.ts

@@ -75,7 +75,7 @@ const webpackFinal = async (config: any, options: Options) => {
       'process.env.NODE_ENV': JSON.stringify(
         process.env.NODE_ENV || 'development',
       ),
-      __DEV__: process.env.NODE_ENV !== 'production' || true,
+      __DEV__: process.env.NODE_ENV !== 'production',
     }),
   );