Method trimFront

lib/internal/streams/iter/ringbuffer.js:82–93

* Remove `count` items from the head without returning them. * O(count) for GC cleanup.

(count)

   * O(count) for GC cleanup.
   */
  trimFront(count) {
    if (count <= 0) return;
    if (count >= this.#size) {
      this.clear();
      return;
    }
    for (let i = 0; i < count; i++) {
      this.#backing[(this.#head + i) & this.#mask] = undefined;
    }
    this.#head = (this.#head + count) & this.#mask;
    this.#size -= count;
  }

  /**
   * Find the logical index of `item` (reference equality). O(n).