Rollup example for @slorber

gistfile1.txt

import nodeResolve from 'rollup-plugin-node-resolve'
import babel from 'rollup-plugin-babel'
import pkg from './package.json'

const mergeAll = objs => Object.assign({}, ...objs)

const commonPlugins = [
	babel({
		plugins: ['external-helpers'],
	}),
]

const externals = [
	...Object.keys(pkg.dependencies || {}),
	...Object.keys(pkg.peerDependencies || {})
]

const externalPattern = new RegExp(`^(${externals.join('|')})($|/)`)

const configBase = {
	input: 'src/index.js',
	external: externals.length === 0
		? () => false
		: id => externalPattern.test(id),
	plugins: commonPlugins,
}

const webConfig = mergeAll([
	configBase,
	{ output: [{ file: pkg.module, format: 'es' }, { file: pkg.main, format: 'cjs' }] },
])

const rnConfig = mergeAll([
	configBase,
	{
		output: { file: pkg['react-native'], format: 'cjs' },
		plugins: commonPlugins.concat([
			nodeResolve({ extensions: ['.native.js', '.js'] })
		]),
	},
])

export default [webConfig, rnConfig]