Function gather

packages/effect/test/Cron.test.ts:163–177

(
      generator: IterableIterator<Date>,
      lower: Date,
      upper: Date,
      direction: "forward" | "reverse"
    )

    ] as const

    const gather = (
      generator: IterableIterator<Date>,
      lower: Date,
      upper: Date,
      direction: "forward" | "reverse"
    ) => {
      const res: Array<Date> = []
      for (const date of generator) {
        if (direction === "forward" ? date >= upper : date <= lower) {
          break
        }
        res.push(date)
      }
      return res
    }

    for (const [expr, lowerStr, upperStr] of cases) {
      const lower = new Date(lowerStr)