Javascript Validate Email

validate.js

const validateEmail = (str) => {
  var emailRe = /^(([^<>()\[\]\\.,;:\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,}))$/;
  var arr = emailRe.exec(str)
  if(arr && arr.length) {
    return arr[0]
  }
  else return false
}