Class SubprocessProgram

src/targets/node/program.ts:55–79

 * Program created from a subprocess.
 */
export class SubprocessProgram implements IProgram {
  public readonly stopped: Promise<IStopMetadata>;
  private killed = false;

  constructor(
    private readonly child: ChildProcess,
    private readonly logger: ILogger,
    private readonly killBehavior: KillBehavior,
  ) {
    this.stopped = new Promise((resolve, reject) => {
      child.once('exit', code => resolve({ killed: this.killed, code: code || 0 }));
      child.once('error', error => reject({ killed: this.killed, code: 1, error }));
    });
  }

  public gotTelemetery() {
    // no-op
  }

  public stop(): Promise<IStopMetadata> {
    this.killed = true;
    killTree(this.child.pid as number, this.logger, this.killBehavior);
    return this.stopped;
  }
}

/**
 * A no-op program that never stops until stop() is called. Currently, we use