Method connectToChildProcessViaStdio

nodejs/src/client.ts:2412–2442

* Connect to child via stdio pipes

()

     * Connect to child via stdio pipes
     */
    private async connectToChildProcessViaStdio(): Promise<void> {
        if (!this.cliProcess) {
            throw new Error("CLI process not started");
        }

        // Keep stdin pipe errors inside the normal JSON-RPC teardown path.
        // Preserve the failure reason via the gated debug log rather than discarding it.
        this.cliProcess.stdin?.on("error", (err) => {
            if (this.forceStopping) {
                return;
            }
            this.state = "error";
            const reason = err instanceof Error ? (err.stack ?? err.message) : String(err);
            this.logDebug(`stdin pipe error: ${reason}`);
            try {
                this.connection?.dispose();
            } catch {
                // The connection may already be closing after the child process exited.
            }
        });

        // Create JSON-RPC connection over stdin/stdout
        this.messageWriter = new TeardownResilientStreamMessageWriter(this.cliProcess.stdin!);
        this.connection = createMessageConnection(
            new StreamMessageReader(this.cliProcess.stdout!),
            this.messageWriter
        );

        this.attachConnectionHandlers();
        this.connection.listen();
    }

    /**
     * Connect to parent via stdio pipes