// tired brain
var numUniqueEmails = function(emails) {
    let uniqueEmails = [];

    for(email of emails){
        let filtered = '';
        let atIndex = email.indexOf("@");
        let plusIndex = email.indexOf("+");
        let name = email.substring(email[0], atIndex);
        let domain = email.substring(atIndex, email.length);

        if(plusIndex > -1){
            name = name.substring(0, plusIndex)
        }

        name = (name.replace(/\./g, ''));
        filtered = name.concat(domain)

        if(!uniqueEmails.includes(filtered)) {
            uniqueEmails.push(filtered)
        }
    }
    return uniqueEmails.length
};