rollup.config.js

import pkg from './package.json';
import babel from 'rollup-plugin-babel';
import resolve from 'rollup-plugin-node-resolve';
import { uglify } from 'rollup-plugin-uglify';
import { minify } from 'uglify-es';

const prod = process.env.BUILD === 'prod';
const format = process.env.FORMAT || 'umd';

const input = `src/index.js`;
const suffix = prod ? `.min` : '';
const suffixFormat = format !== 'umd' ? `.${format}` : '';
const file = `bin/pixi-tween${suffixFormat}${suffix}.js`;

const plugins = [
	resolve(),
	babel({
		exclude: 'node_modules/**',
	})
];

if (prod) {
	plugins.push(uglify({
		mangle: true,
		compress: true,
	}, minify));
}

const compiled = (new Date()).toUTCString().replace(/GMT/g, 'UTC');

const banner = `/*!
 * ${pkg.name} - v${pkg.version}
 * Compiled ${compiled}
 *
 * pixi-tween is licensed under the MIT License.
 * http://www.opensource.org/licenses/mit-license
 */\n`;

export default {
	input,
	output: {
		name: '__pixiTween',
		file,
		format,
		banner,
		globals: `PIXI`,
		intro: `if (typeof PIXI === 'undefined') { throw 'PixiJS is required'; }`,
		sourcemap: false,
	},
	plugins
};