hunan-rostomyan

// Given a cookie key `name`, returns the value of
// the cookie or `null`, if the key is not found.
function getCookie(name: string): string {
	const nameLenPlus = (name.length + 1);
	return document.cookie
		.split(';')
		.map(c => c.trim())
		.filter(cookie => {
			return cookie.substring(0, nameLenPlus) === `${name}=`;
		})