Method removeAt

lib/internal/streams/iter/ringbuffer.js:113–123

* Remove the item at logical `index`, shifting later elements. O(n) worst case. * Used only on rare abort-signal cancellation path.

(index)

   * Used only on rare abort-signal cancellation path.
   */
  removeAt(index) {
    if (index < 0 || index >= this.#size) return;
    for (let i = index; i < this.#size - 1; i++) {
      const from = (this.#head + i + 1) & this.#mask;
      const to = (this.#head + i) & this.#mask;
      this.#backing[to] = this.#backing[from];
    }
    const last = (this.#head + this.#size - 1) & this.#mask;
    this.#backing[last] = undefined;
    this.#size--;
  }

  /**
   * Remove all items. O(n) for GC cleanup.