1/**
2 * @param {string[]} emails
3 * @return {number}
4 */
5var numUniqueEmails = function(emails) {
6 const arr = emails.map(val =>
7 (val.split('@')[0].replace(/./g, '') + '@' + val.split('@')[1])
8 .replace(/+.*(?=@)/, '')
9 );
10
11 return [...new Set(arr)].length;
12};