Method withLock

src/utils.ts:405–412

* Execute a function while holding the lock

(fn: () => Promise<T> | T)

   * Execute a function while holding the lock
   */
  async withLock<T>(fn: () => Promise<T> | T): Promise<T> {
    const release = await this.acquire();
    try {
      return await fn();
    } finally {
      release();
    }
  }

  /**
   * Check if the lock is currently held