FirebaseExtended / FirebaseExtended/reactfire

useFirestoreCollection triggers a double render

Abierto
#484 4 comentarios 2 reacciones 0 asignados Ver en GitHub
v5
Lenguaje dominante
TypeScript
Estrellas
3.6k
Forks
403
Merge medio
14 h 53 min
PR fusionados (30 d)
5

Descripción

Hi,

Seems like `useFirestoreCollection` always triggers unnecessary render when fetching data (suspense is **on**). Similar behavior is also the case for `useUser`.
There's a chance I'm simply using the API wrong, so please advise if so :)

### Version info

**React:** 17.0.2

**Firebase:** 9.1.3

**ReactFire:** 4.2.0

### Test case

```javascript
const q = /* whatever query */;
const queryResults = useFirestoreCollection(q);
console.log(queryResults);

```

### Expected behavior

`console.log` is called once.

### Actual behavior

`console.log` is called twice.

Ultimately, what I'm trying to achieve is a code similar to the one below

```javascript
const queryResults = useFirestoreCollection(query);
return queryResults.data.docs.map((d) => /* render */);
```

that renders only once when the data is fetched (and then only when there're changes in the collection).

Guía de contribución

Abrir la guía de contribución

Evaluación

Este issue todavía no se ha evaluado.

Recibe los nuevos issues en tu correo

Un resumen breve de issues de GitHub para principiantes.