node/deps/npm/node_modules/prepend-http/index.js
Rebecca Turner 468ab4519e deps: upgrade npm to 6.1.0
PR-URL: https://github.com/nodejs/node/pull/20190
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
2018-05-24 23:24:45 -07:00

15 lines
288 B
JavaScript

'use strict';
module.exports = function (url) {
if (typeof url !== 'string') {
throw new TypeError('Expected a string, got ' + typeof url);
}
url = url.trim();
if (/^\.*\/|^(?!localhost)\w+:/.test(url)) {
return url;
}
return url.replace(/^(?!(?:\w+:)?\/\/)/, 'http://');
};