Function useCollection

firestore/useCollection.ts:29–59

(
  query?: Query<T> | null,
  options?: Options
)

} from './types';

export const useCollection = <T = DocumentData>(
  query?: Query<T> | null,
  options?: Options
): CollectionHook<T> => {
  const { error, loading, reset, setError, setValue, value } = useLoadingValue<
    QuerySnapshot<T>,
    FirestoreError
  >();
  const ref = useIsFirestoreQueryEqual<Query<T>>(query, reset);

  useEffect(() => {
    if (!ref.current) {
      setValue(undefined);
      return;
    }
    const unsubscribe = options?.snapshotListenOptions
      ? onSnapshot(
          ref.current,
          options.snapshotListenOptions,
          setValue,
          setError
        )
      : onSnapshot(ref.current, setValue, setError);

    return () => {
      unsubscribe();
    };
  }, [ref.current]);

  return [value as QuerySnapshot<T>, loading, error];
};

export const useCollectionOnce = <T = DocumentData>(
  query?: Query<T> | null,