Method truncate

io/buffer.ts:175–184

* Discards all but the first `n` unread bytes from the buffer but * continues to use the same allocated storage. It throws if `n` is * negative or greater than the length of the buffer. * * @example Usage * ```ts * import { Buffer } from "@std/io/buffer"; * import { assertEquals

(n: number)

   * @param n The number of bytes to keep.
   */
  truncate(n: number) {
    if (n === 0) {
      this.reset();
      return;
    }
    if (n < 0 || n > this.length) {
      throw new Error("Buffer truncation out of range");
    }
    this.#reslice(this.#off + n);
  }

  /**
   * Resets the contents