'use strict'; module.exports = (string, separator) => { if (!(typeof string === 'string' && typeof separator === 'string')) { throw new TypeError('Expected the arguments to be of type `string`'); } if (separator === '') { return [string]; } const separatorIndex = string.indexOf(separator); if (separatorIndex === -1) { return [string]; } return [ string.slice(0, separatorIndex), string.slice(separatorIndex + separator.length) ]; };