Rollup configuration for development

rollup.dev.js

import babel from "rollup-plugin-babel";
import cjs from "rollup-plugin-commonjs";
import globals from "rollup-plugin-node-globals";
import replace from "rollup-plugin-replace";
import resolve from "rollup-plugin-node-resolve";
import serve from "rollup-plugin-serve";
import postcss from "rollup-plugin-postcss";

export default {
	input: "examples/src/app.js",
	output: {
		file: "examples/public/js/app.js",
		format: "iife",
		sourcemap: true
	},
	plugins: [
		postcss({
			modules: false,
			extract: "dist/polaris.css",
			inject: false,
			extensions: [".css"],
			sourceMap: "inline"
		}),
		babel({
			babelrc: false,
			exclude: "node_modules/**",
			presets: [ [ "es2015", { modules: false } ], "stage-0", "react" ],
			plugins: [ "external-helpers" ]
		}),
		cjs({
			exclude: "node_modules/process-es6/**",
			include: [
				"node_modules/create-react-class/**",
				"node_modules/fbjs/**",
				"node_modules/object-assign/**",
				"node_modules/react/**",
				"node_modules/react-dom/**",
				"node_modules/prop-types/**"
			]
		}),
		globals(),
		replace({ "process.env.NODE_ENV": JSON.stringify("development") }),
		resolve({
			browser: true,
			main: true
		}),
		serve({
			contentBase: "examples/public",
			port: 9000,
			open: true
		}),
	]
};