RxJS operator bufferTime

Why does the code

interval(1000)      .pipe(          take(15),          bufferTime(5000)      )      .subscribe(sequence => {          console.log(sequence);      });  

generates

[ 0, 1, 2, 3 ]  [ 4, 5, 6, 7, 8 ]  [ 9, 10, 11, 12, 13 ]  [ 14 ]  

Why the first batch only has 4 items?

https://stackoverflow.com/questions/66947794/rxjs-operator-buffertime April 05, 2021 at 11:05AM