Simplify rollup config

rollup.config.js

@@ -4,44 +4,45 @@ import commonjs from 'rollup-plugin-commonjs';
 import {uglify} from 'rollup-plugin-uglify';
 import babel from 'rollup-plugin-babel';
 
-function createConfig(file, opts = {}) {
-  const options = Object.assign({
-    production: false,
-    uglify: false
-  }, opts);
+function stripEnvVariables(env) {
+  return {
+    __DEV__: env === 'production' ? 'false' : 'true',
+    'process.env.NODE_ENV': `'${env}'`,
+  };
+}
 
-  const config = {
+export default [
+  {
     input: 'index.js',
     output: {
-      file: file,
+      file: 'prop-types.js',
       format: 'umd',
       name: 'PropTypes'
     },
     plugins: [
       babel({
         exclude: 'node_modules/**'
       }),
-      replace(stripEnvVariables(options.production)),
+      replace(stripEnvVariables('development')),
       nodeResolve(),
       commonjs()
     ]
-  };
-
-  if (options.uglify) {
-    config.plugins.push(uglify())
+  },
+  {
+    input: 'index.js',
+    output: {
+      file: 'prop-types.min.js',
+      format: 'umd',
+      name: 'PropTypes'
+    },
+    plugins: [
+      babel({
+        exclude: 'node_modules/**'
+      }),
+      replace(stripEnvVariables('production')),
+      nodeResolve(),
+      commonjs(),
+      uglify()
+    ]
   }
-
-  return config;
-}
-
-function stripEnvVariables(production) {
-  return {
-    __DEV__: production ? 'false' : 'true',
-    'process.env.NODE_ENV': production ? "'production'" : "'development'",
-  };
-}
-
-export default [
-  createConfig('prop-types.js'),
-  createConfig('prop-types.min.js', {uglify: true, production: true})
 ];