devi utilizzare i templete literals per formattare la stringa multilinea in js.
codice:
const js = `wdaada012@33èd##
dsdssxwedwedaxsxcsdcsadc
sdspecific you and tu

sascfewdasxsx
dcdcredwwccsadc
asxwdwdweasxsacecweddwdw`;

const strCount =  js.split('\n').length;

console.log(strCount);