Get the value of a param from a URL

JavaScript version
const getParam = (url, param) => new URLSearchParams(new URL(url).search).get(param);
TypeScript version
const getParam = (url: string, param: string): string | null => new URLSearchParams(new URL(url).search).get(param);
Examples
getParam('http://domain.com?message=hello', 'message'); // 'hello'