livr/lib/rules/special/url.js

Lightweight validator supporting Language Independent Validation Rules Specification

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

// Pre-compiled regex at module load time (not per-call)
const URL_RE = /^(?:(?: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*)?$/i;

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

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

module.exports = url;