@dmartss/validate-email/lib/index.js

Email validation function

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
var re = /^[a-zA-Z0-9.!#$%&’*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$/;

/**
 * @function validate Function to validate a users email address they input
 * @param {String} theirEmail The email the users provides
 * @param {String} invalidEmail The invalid email to check
 */

function validate(theirEmail) {
  var invalidEmail = theirEmail.split(',').map(function (theirEmail) {
    return theirEmail.trim();
  }).filter(function (theirEmail) {
    return re.test(theirEmail) === false;
  });

  if (invalidEmail.length) return 'Please provide a valid email address';
  return;
}

exports.default = validate;