I have a regular expression to verify email and I want separate this in mini regular expression to check each

/^(([^<>()\[\]\\.,;:\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]{2,24}))$/ 

each expression should be checked like this

const reg = [
        {
           'reg' : /\s/,
           'msg' : 'the mail cannot contain blank spaces'
        },



for (const key in reg) {
    if(reg[key].reg.test(mail)){
      (this as any).errorMessage = reg[key].msg
      return false
    }
  }

This allows you to get a different error message

How can I separate the regular expression?