Function getProtocol

lib/util/URLAbsoluteSpecifier.js:81–84

* Returns protocol if absolute URL specifier provided. * @param {string} specifier specifier * @returns {string | null | undefined} protocol if absolute URL specifier provided

(specifier)

 * @returns {string | null | undefined} protocol if absolute URL specifier provided
 */
function getProtocol(specifier) {
	const scheme = getScheme(specifier);
	return scheme === undefined ? undefined : `${scheme}:`;
}

module.exports.getProtocol = getProtocol;
module.exports.getScheme = getScheme;