Function request

src/mcp/transport.ts:114–129

* Send a server-initiated request to the client and await its response. * * MCP is bidirectional: the server can ask the client questions too. We use * this for `roots/list` — the spec-blessed way to learn the workspace root * when the client didn't pass one in `initialize` (see issue #1

(method: string, params?: unknown, timeoutMs = 5000)

   * on timeout so callers can fall back rather than hang forever.
   */
  request(method: string, params?: unknown, timeoutMs = 5000): Promise<unknown> {
    const id = `${this.idPrefix()}-${this.nextRequestId++}`;
    return new Promise<unknown>((resolve, reject) => {
      const timer = setTimeout(() => {
        this.pending.delete(id);
        reject(new Error(`Timed out after ${timeoutMs}ms waiting for "${method}" response`));
      }, timeoutMs);
      // Don't let a pending request keep the process alive on shutdown.
      timer.unref?.();
      this.pending.set(id, {
        resolve: (value) => { clearTimeout(timer); resolve(value); },
        reject: (error) => { clearTimeout(timer); reject(error); },
      });
      this.write(JSON.stringify({ jsonrpc: '2.0', id, method, params }));
    });
  }

  send(response: JsonRpcResponse): void {
    this.write(JSON.stringify(response));