Function interleave

packages/effect/test/Stream/interleaving.test.ts:24–60

(
        bools: Chunk.Chunk<boolean>,
        numbers1: Chunk.Chunk<number>,
        numbers2: Chunk.Chunk<number>
      )

  it.effect("interleaveWith", () =>
    Effect.gen(function*() {
      const interleave = (
        bools: Chunk.Chunk<boolean>,
        numbers1: Chunk.Chunk<number>,
        numbers2: Chunk.Chunk<number>
      ): Chunk.Chunk<number> =>
        pipe(
          Chunk.head(bools),
          Option.map((head) => {
            if (head) {
              if (Chunk.isNonEmpty(numbers1)) {
                const head = pipe(numbers1, Chunk.unsafeGet(0))
                const tail = pipe(numbers1, Chunk.drop(1))
                return pipe(
                  interleave(pipe(bools, Chunk.drop(1)), tail, numbers2),
                  Chunk.prepend(head)
                )
              }
              if (Chunk.isNonEmpty(numbers2)) {
                return interleave(pipe(bools, Chunk.drop(1)), Chunk.empty<number>(), numbers2)
              }
              return Chunk.empty<number>()
            }
            if (Chunk.isNonEmpty(numbers2)) {
              const head = pipe(numbers2, Chunk.unsafeGet(0))
              const tail = pipe(numbers2, Chunk.drop(1))
              return pipe(
                interleave(pipe(bools, Chunk.drop(1)), numbers1, tail),
                Chunk.prepend(head)
              )
            }
            if (Chunk.isNonEmpty(numbers1)) {
              return interleave(pipe(bools, Chunk.drop(1)), numbers1, Chunk.empty<number>())
            }
            return Chunk.empty<number>()
          }),
          Option.getOrElse(() => Chunk.empty<number>())
        )
      const boolStream = Stream.make(true, true, false, true, false)
      const stream1 = Stream.make(1, 2, 3, 4, 5)
      const stream2 = Stream.make(4, 5, 6, 7, 8)