rollup/test/function/throws-not-found-module/_config.js

var assert = require( 'assert' );
var path = require( 'path' );

module.exports = {
	description: 'throws error if module is not found',
	error: {
		code: 'UNRESOLVED_IMPORT',
		message: `Could not resolve './mod' from main.js`
	}
};