A more accurate timer to replace setInterval

AccurateInterval.js

class AccurateInterval {

  intervalId = null

  constructor(fn, timer) {
    this.fn = fn
    this.timer = timer
  }

  start = () => {
    this.next = new Date().getTime() + this.timer
    this.step()
    return this
  }

  step = () => {
    this.next += this.timer
    this.intervalId = setTimeout(() => {
      this.step()
      this.fn()
    },
    this.next - new Date().getTime())
  }

  stop = () => {
    clearTimeout(this.intervalId)
  }

}