RocketChat/Rocket.Chat

export const validateEmail = (email: string, options: { style: string } = { style: 'basic' }): boolean => {
    const basicEmailRegex = /^[^@]+@[^@]+$/;
    const rfcEmailRegex =
        /^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/;

    switch (options.style) {
        case 'rfc':
            return rfcEmailRegex.test(email);
        case 'basic':
        default:
            return basicEmailRegex.test(email);
    }
};