How add all arrays to one in rxjs

user_16850477 0
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how i can add all arrays to one in rxjs for this code?

someObs$ = this.getSomeData$().pipe(
    mergeMap(res => res),
    groupBy(el => el.class),
    mergeMap(group$ => group$.pipe(toArray())),
    // how in this place create something like this: [[{},{}], [{},{}], [{},{}]]
    shareReplay(1)
  )

Thanks for help

rxjs angular
2 Answers

I found solution for this: operator toArray()

user_168504770

RxJS Doc definition of toArray operator:

toArray will wait until the source Observable completes before emitting the array containing all emissions. When the source Observable errors no array will be emitted.

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