Function assertSpan

repos/effect/packages/effect/test/Array.test.ts:167–175

(
        input: Iterable<number>,
        expectedInit: ReadonlyArray<number>,
        expectedRest: ReadonlyArray<number>
      )

      deepStrictEqual(pipe([1, 2, 4], Arr.takeWhile(f)), [])
      deepStrictEqual(pipe([2, 4], Arr.takeWhile(f)), [2, 4])

      deepStrictEqual(pipe(new Set([2, 4, 3, 6]), Arr.takeWhile(f)), [2, 4])
      deepStrictEqual(pipe(new Set<number>(), Arr.takeWhile(f)), [])
      deepStrictEqual(pipe(new Set([1, 2, 4]), Arr.takeWhile(f)), [])
      deepStrictEqual(pipe(new Set([2, 4]), Arr.takeWhile(f)), [2, 4])
    })

    it("takeWhileFilter", () => {
      const f: (n: number, i: number) => Result.Result<number, string> = (n, i) =>
        n + i < 5 ? Result.succeed(n * 10) : Result.fail(`stop: ${n}`)

      deepStrictEqual(Arr.takeWhileFilter([], f), [])