/usr/lib/nodejs/isurl/index.js is in node-isurl 1.0.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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const hasToStringTag = require("has-to-string-tag-x");
const isObject = require("is-object");
const toString = Object.prototype.toString;
const urlClass = "[object URL]";
const hash = "hash";
const host = "host";
const hostname = "hostname";
const href = "href";
const password = "password";
const pathname = "pathname";
const port = "port";
const protocol = "protocol";
const search = "search";
const username = "username";
const isURL = (url, supportIncomplete/*=false*/) =>
{
if (!isObject(url)) return false;
// Native implementation in older browsers
if (!hasToStringTag && toString.call(url) === urlClass) return true;
if (!(href in url)) return false;
if (!(protocol in url)) return false;
if (!(username in url)) return false;
if (!(password in url)) return false;
if (!(hostname in url)) return false;
if (!(port in url)) return false;
if (!(host in url)) return false;
if (!(pathname in url)) return false;
if (!(search in url)) return false;
if (!(hash in url)) return false;
if (supportIncomplete !== true)
{
if (!isObject(url.searchParams)) return false;
// TODO :: write a separate isURLSearchParams ?
}
return true;
}
isURL.lenient = url =>
{
return isURL(url, true);
};
module.exports = isURL;
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