Method _write

packages/bench/src/io.ts:162–188

(
    chunk: Buffer | string,
    encoding: BufferEncoding,
    callback: (error?: Error | null) => void,
  )

  private readonly writeResolvers: Array<() => void> = [];

  override _write(
    chunk: Buffer | string,
    encoding: BufferEncoding,
    callback: (error?: Error | null) => void,
  ): void {
    this.writeCount++;
    this.totalBytes +=
      typeof chunk === "string" ? Buffer.byteLength(chunk, encoding) : chunk.byteLength;

    const done = (err?: Error | null) => {
      const r = this.writeResolvers.shift();
      if (r) r();
      callback(err ?? null);
    };

    try {
      // Forward to the real TTY.
      const out = process.stdout as unknown as NodeJS.WriteStream;
      if (typeof chunk === "string") {
        out.write(chunk, encoding, done);
      } else {
        out.write(chunk, done);
      }
    } catch (err) {
      done(err instanceof Error ? err : new Error(String(err)));
    }
  }

  waitForWrite(): Promise<void> {
    return new Promise<void>((resolve) => {