Class Subprocess

Example

    const Subprocess = await import('LensStudio:Subprocess');

    // --- Async spawn via Subprocess.create ---
    // Subprocess.create(command, args, options) returns a Subprocess instance.
    // Call .start() to begin execution. Connect signals for events.
    const proc = Subprocess.Subprocess.create('echo', ['async hello'], {} as any);

    this.connections.push(
      proc.onStart.connect(() => {
        console.log(`Subprocess started: ${proc.command}`);
      })
    );

    this.connections.push(
      proc.stdout.connect((data: Editor.Buffer) => {
        console.log(`stdout received: ${data.toString().length} bytes`);
      })
    );

    this.connections.push(
      proc.stderr.connect((data: Editor.Buffer) => {
        console.log(`stderr received: ${data.toString().length} bytes`);
      })
    );

    this.connections.push(
      proc.onExit.connect((exitCode: number, exitStatus: number) => {
        console.log(`Subprocess exited: code=${exitCode}, status=${exitStatus}`);
      })
    );

    this.connections.push(
      proc.onError.connect((errorCode: number) => {
        console.log(`Subprocess error: ${errorCode}`);
      })
    );

    this.connections.push(
      proc.onStateChange.connect((state: number) => {
        // 0=NotRunning, 1=Starting, 2=Running
        console.log(`Subprocess state changed: ${state}`);
      })
    );

    proc.start();

    // --- Synchronous spawn ---
    const syncResult = Subprocess.spawnSync('echo', ['sync hello'], {} as any);
    console.log(`spawnSync exitCode: ${syncResult.exitCode}`);

    // --- stdin (Writable) ---
    // proc.stdin is a Writable; use proc.stdin.write(data) to send input.
    console.log(`stdin available: ${proc.stdin !== undefined}`);
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