Kai Willam katoba86

## vanilla-observable.ts
/**
 * Modified by Russell Dempsey on 2021 DEC 15
 * @see https://stackoverflow.com/a/62002044/592760
 */
type Subscriber<T> = (value: T) => void;
class Observable<T> {
    private subscribers = new Set<Subscriber<T>>();

    constructor(private value: T) {}
	/**
	* Modified by Russell Dempsey on 2021 DEC 15
	* @see https://stackoverflow.com/a/62002044/592760
	*/
	type Subscriber<T> = (value: T) => void;
	class Observable<T> {
	private subscribers = new Set<Subscriber<T>>();

	constructor(private value: T) {}