Method unsubscribe

packages/inquirer/src/utils/observable.ts:145–154

()

        return closed;
      },
      unsubscribe() {
        if (closed) {
          return;
        }

        closed = true;
        if (teardownReady) {
          runTeardown(teardown);
        }
      },
    };

    const safeObserver: Observer<T> = {