@boomerang-io/carbon-addons-boomerang-react/dist/esm/tools/isUrl.js

Carbon Addons for Boomerang apps

/*
IBM Confidential
694970X, 69497O0
© Copyright IBM Corp. 2022, 2024
*/
/* eslint-disable */
/**
 * https://github.com/segmentio/is-url
 */
/**
 * RegExps.
 * A URL must match #1 and then at least one of #2/#3.
 * Use two levels of REs to avoid REDOS.
 */
const protocolAndDomainRE = /^(?:\w+:)?\/\/(\S+)$/;
const localhostDomainRE = /^localhost[\:?\d]*(?:[^\:?\d]\S*)?$/;
const nonLocalhostDomainRE = /^[^\s\.]+\.\S{2,}$/;
/**
 * Loosely validate a URL `string`.
 *
 * @param {String} string
 * @return {Boolean}
 */
function isUrl(string) {
    if (typeof string !== "string") {
        return false;
    }
    const match = string.match(protocolAndDomainRE);
    if (!match) {
        return false;
    }
    const everythingAfterProtocol = match[1];
    if (!everythingAfterProtocol) {
        return false;
    }
    if (localhostDomainRE.test(everythingAfterProtocol) || nonLocalhostDomainRE.test(everythingAfterProtocol)) {
        return true;
    }
    return false;
}

export { isUrl as default };