Function step

packages/mock-raf/index.js:15–23

({ count = 1, time = 16.667 } = {})

      requests.delete(id)
    },
    step({ count = 1, time = 16.667 } = {}) {
      for (let i = 0; i < count; i++) {
        const current = Array.from(requests.values())
        requests.clear()

        now += time
        current.forEach(callback => callback(now))
      }
    },
    flush() {
      while (requests.size) {
        this.step()