react-email-mask/dist/index.modern.js

A react module that masks email addresses from any input string

import 'react';

var maskEmail = function maskEmail(stringValue) {
  var oldStringValue = stringValue;
  var re = /([a-zA-Z0-9._-]+@[a-zA-Z0-9._-]+\.[a-zA-Z0-9._-]+)/gi;
  var foundEmails = [];
  var match;

  while (match = stringValue.match(re)) {
    foundEmails.push(match[0]);
    stringValue = stringValue.replace(match[0], "");
  }

  var maskedEmails = [];

  for (var i = 0; i < foundEmails.length; i++) {
    var strArr = foundEmails[i].split('@');
    var left = strArr[0].length <= 1 ? '*' : strArr[0].length <= 2 ? '**' : strArr[0].slice(0, 1) + '*'.repeat(strArr[0].length - 2) + strArr[0].slice(strArr[0].length - 1, strArr[0].length);
    var domain = strArr[1].split('.')[0];
    var right = domain.length <= 1 ? '*' : domain.length <= 2 ? '**' : domain.slice(0, 1) + '*'.repeat(domain.length - 2) + domain.slice(domain.length - 1, domain.length);
    maskedEmails.push(left + '@' + right + '.' + strArr[1].split('.')[1]);
  }

  stringValue = oldStringValue;

  for (var i = 0; i < foundEmails.length; i++) {
    stringValue = replaceAll(stringValue, foundEmails[i], maskedEmails[i]);
  }

  return stringValue;
};

function replaceAll(str, find, replace) {
  return str.replace(new RegExp(escapeRegExp(find), 'g'), replace);
}

function escapeRegExp(string) {
  return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
}

export { maskEmail };
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