ismail/dist/index.js

validity checks of the most commonly used services

"use strict";
module.exports = function ismail(data) {
    if (typeof data !== "string") {
        data = data.toString();
    }
    data = data.toLowerCase();
    var valid, simplify;
    var da = data.substring(0, data.indexOf('@'));
    var ta = data.replace(/.*@/, "");
    if (data.indexOf('+') >= 0) {
        da = da.substring(0, da.indexOf('+'));
        data = da + "@" + ta;
    }
    var domain = ta.substring(0, ta.indexOf('.'));
    var domains = ["gmail", "googlemail", "live", "hotmail", "outlook", "windowslive", "msn", "yandex"];
    if (!domains.includes(domain)) {
        var universalRule = /^[-!#$%&'*+\/0-9=?A-Z^_a-z{|}~](\.?[-!#$%&'*+\/0-9=?A-Z^_a-z`{|}~])*@[a-zA-Z0-9](-*\.?[a-zA-Z0-9])*\.[a-zA-Z](-?[a-zA-Z0-9])+$/;
        if (!universalRule.test(data)) {
            valid = false;
        }
        else {
            valid = true;
        }
    }
    else {
        var rules = [
            /(^[a-z0-9](\.?[a-z0-9]){5,29})@(gmail|googlemail)\.com$/,
            /^[a-z](\.?[a-z0-9\-_]){0,}@(outlook|live|windowslive|hotmail|msn)((\.(([a-z]{2,3}))){1,2})$/,
            /^[a-z]([\.-]?[a-z0-9]){0,}@yandex((\.(([a-z]{2,3}))){1,2})$/
        ];
        if (domain == "googlemail" || domain == "gmail") {
            da = da.split('.').join("");
            data = da + "@" + ta;
            data = data.replace("googlemail", "gmail");
        }
        var control = rules.map(function (regex) {
            return regex.test(data);
        });
        if (control.includes(true)) {
            valid = true;
        }
        else {
            valid = false;
        }
    }
    simplify = data;
    return { "valid": valid, "simplify": simplify };
};
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