Function isSuspenseInstancePending

docs/external/js/react-dom.development.js:7776–7778

(instance)

    return instance;
  }
  function isSuspenseInstancePending(instance) {
    return instance.data === SUSPENSE_PENDING_START_DATA;
  }
  function isSuspenseInstanceFallback(instance) {
    return instance.data === SUSPENSE_FALLBACK_START_DATA;
  }