/Javascript/React/How to accept only. proper email from an input field react with functional component

How to accept only. proper email from an input field react with functional component

if (typeof input["email"] !== "undefined") {
   var pattern = new RegExp(/^(("[\w-\s]+")|([\w-]+(?:\.[\w-]+)*)|("[\w-\s]+")([\w-]+(?:\.[\w-]+)*))(@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$)|(@\[?((25[0-5]\.|2[0-4][0-9]\.|1[0-9]{2}\.|[0-9]{1,2}\.))((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\.){2}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\]?$)/i);
   if (!pattern.test(input["email"])) {
      isValid = false;
      errors["email"] = "Please enter valid email address.";
   }
}

Source: pretagteam.com

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