Method spawn

adev/shared-docs/testing/testing-helper.ts:75–83

(
    command: unknown,
    args?: unknown,
    options?: unknown,
  )

  }

  override async spawn(
    command: unknown,
    args?: unknown,
    options?: unknown,
  ): Promise<FakeWebContainerProcess> {
    if (this.fakeSpawn) return this.fakeSpawn;

    return new FakeWebContainerProcess();
  }

  override on(event: unknown, listener: unknown): Unsubscribe {
    return () => {};