import { interval, timer } from 'rxjs';
import { debounce } from 'rxjs/operators';
//emit value every 1 second, ex. 0...1...2
const interval$ = interval(1000);
//raise the debounce time by 200ms each second
const debouncedInterval = interval$.pipe(debounce(val => timer(val * 200)));
After 5 seconds, debounce time will be greater than interval time,
all future values will be thrown away
output: 0...1...2...3...4......(debounce time over 1s, no values emitted)
const subscribe = debouncedInterval.subscribe(val =>
console.log(`Example Two: ${val}`)