rollup.config.object.js

import resolve 		from 'rollup-plugin-node-resolve';
import commonjs 	from 'rollup-plugin-commonjs';
import typescript 	from 'rollup-plugin-typescript2';
import babel 		from 'rollup-plugin-babel';
import {uglify} 	from 'rollup-plugin-uglify';
import {terser} 	from 'rollup-plugin-terser';
import config 		from './package.json';

const 	projectName 		= config.projectName,
		context 			= config.projectContext;// top-level context
const 	input 				= './src/index.ts',
		outFile 			= './dist/object/index',
		name 				= projectName,// module name
		format 				= 'iife',
		sourcemap 			= true,
		isProd 				= process.env.IS_DEV === 'false',
		typescriptConfig 	= (declaration = false) =>
		{
			return {
				tsconfigDefaults:
				{
					compilerOptions:
					{
						target: 'ESNext',
						sourceMap: true,
						declaration,
					},
					exclude: ['node_modules'],
				}
			}
		},
		babelConfig 		=
		{
			sourceMaps: true,
			exclude: 'node_modules/**',
			extensions: ['.ts'],
			presets:
			[
				[
					'@babel/env',
					{
						modules: false,
						useBuiltIns: 'usage',
						corejs: 3,
					}
				],
			],
		},
		plugins = [resolve(), commonjs()];

export default
[
	// ESNext
	{
		input,
		context,
		output: {format, sourcemap, name, file: `${outFile}.next.js`},
		plugins:
		[
			...plugins,
			typescript(typescriptConfig(true)),
		],
	},
	// ESNext minified
	isProd && {
		input,
		context,
		output: {format, sourcemap, name, file: `${outFile}.next.min.js`},
		plugins:
		[
			...plugins,
			typescript(typescriptConfig()),
			terser(),
		],
	},
	// ES5
	isProd && {
		input,
		context,
		output: {format, sourcemap, name, file: `${outFile}.js`},
		plugins:
		[
			...plugins,
			typescript(typescriptConfig()),
			babel(babelConfig),
		],
	},
	// ES5 minified
	isProd && {
		input,
		context,
		output: {format, sourcemap, name, file: `${outFile}.min.js`},
		plugins:
		[
			...plugins,
			typescript(typescriptConfig()),
			babel(babelConfig),
			uglify(),
		],
	},
	// As AMD or CommonJS module
	isProd && {
		input,
		context,
		output:
		{
			name,
			format: 'umd',
			file: `${outFile}.umd.js`,
		},
		plugins:
		[
			...plugins,
			typescript(typescriptConfig()),
		],
	},
].filter(o => o);