throttleTime

signature: throttleTime(duration: number, scheduler: Scheduler): Observable

Example 1: Receive latest value every 5 seconds

Example 2: Throttle merged observable

import { merge } from 'rxjs/observable/merge';
import { throttleTime, ignoreElements } from 'rxjs/operators';
const source = merge(
  //emit every .75 seconds
  interval(750),
);
//throttle in middle of emitted values
const example = source.pipe(throttleTime(1200));
//output: 0...1...4...4...8...7

Additional Resources

• Filtering operator: throttle and throttleTime
  - André Staltz