Rollup keeps making an empty bundle/

I'm using ` rollup-plugin-multi-entry`This is my rollup configimport multiEntry from "rollup-plugin-multi-entry"; export default { input: "library/select.js", plugins: [multiEntry()], output: { file:'script.js', format:"umd" } }; But all I get when running 'rollup -c' islibrary/select.js → script.js... (!) Generated an empty bundle created script.js in 18ms

Submitted April 15, 2018 at 10:43PM by OzziePeck