MarsiBarsi · March 23, 2021 14:50
diff --git a/rxjs-challenge.ts b/rxjs-challenge.ts
 const pageVisibility$ = fromEvent(documentRef, 'visibilitychange').pipe(
    startWith(0),
    map(() => documentRef.visibilityState !== 'hidden'),
    distinctUntilChanged(),
 );
	const pageVisibility$ = fromEvent(documentRef, 'visibilitychange').pipe(
	startWith(0),
	map(() => documentRef.visibilityState !== 'hidden'),
	distinctUntilChanged(),
	);