modifiedVariables.js

let previousColor
let previousValue
let timeoutId

const queueUpdate = () => {
  if (
    previousColor === color
    && previousValue === value
  ) {
    return
  }

  $$invalidate('previousColor', previousColor = color)
  $$invalidate('previousValue', previousValue = value)

  clearTimeout(timeoutId)

  $$invalidate('timeoutId', timeoutId = (
    setTimeout(
      () => addToQueue(id),
      getRandomTimeout(),
    )
  ))
}