Validar email

validations.ts

export const isValidEmail = (email: string): boolean => {
  
  const match = String(email)
      .toLowerCase()
      .match(
        /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
      );

    return !!match;
};

export const isEmail = (email: string): string | undefined => {
  return isValidEmail(email) 
    ? undefined
    : 'El correo no parece ser válido';
}

Gracias