Validation of email address in script

/**
     * function to validate the email list.
     *
     * @param {string} emailList - Comma-separated list of email addresses
     *
     * @returns {boolean} - Return true if the email list is valid
     */
    function isValidEmailList(emailList) {
        if (!emailList) return 0; // Allow empty value


        let emails = emailList.split(',');
        let emailRegex = /^[^s@]+@[^s@]+.[^s@]+$/;


        /* Checking if there are more than 10 email addresses since maximum no.of receipients that can be inluded in NetSuite will be 10 */
        if (emails.length > 10) {
            return 2; // More than 10 emails
        }


        // Validate each email address
        for (let i = 0; i < emails.length; i++) {
            let email = emails[i].trim();
            if (!emailRegex.test(email)) {
                return 1; // Invalid email found
            }
        }


        return 0;
    }