leanwebclub/structure-and-scale/seven-seas-service-worker/rollup.config.js

let files = ['index.js', 'treasure.js', 'dice.js', 'sw.js'];

export default files.map( function (file) {
    return {
	input: `src/${file}`,
	output: {
	    file: file,
	    format: 'iife'
	}
    }
});