Method push

lib/dispatcher/fixed-queue.js:115–122

@param {T} data

(data)

  /** @param {T} data */
  push (data) {
    if (this.head.isFull()) {
      // Head is full: Creates a new queue, sets the old queue's `.next` to it,
      // and sets it as the new main queue.
      this.head = this.head.next = new FixedCircularBuffer()
    }
    this.head.push(data)
  }

  /** @returns {T|null} */
  shift () {