livr/lib/rules/special/url.js

Lightweight validator supporting Language Independent Validation Rules Specification

const util = require('../../util');

function url() {
    const urlReStr =
        '^(?:(?:http|https)://)(?:\\S+(?::\\S*)?@)?(?:(?:(?:[1-9]\\d?|1\\d\\d|2[0-1]\\d|22[0-3])(?:\\.(?:1?\\d{1,2}|2[0-4]\\d|25[0-5])){2}(?:\\.(?:[0-9]\\d?|1\\d\\d|2[0-4]\\d|25[0-4]))|(?:(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)(?:\\.(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)*(?:\\.(?:[a-z\\u00a1-\\uffff]{2,})))\\.?|localhost)(?::\\d{2,5})?(?:[/?#]\\S*)?$';
    const urlRe = new RegExp(urlReStr, 'i');

    return value => {
        if (util.isNoValue(value)) return;
        if (!util.isPrimitiveValue(value)) return 'FORMAT_ERROR';

        if (value.length < 2083 && urlRe.test(value)) return;
        return 'WRONG_URL';
    };
}

module.exports = url;