getQueryKey

We provide a getQueryKey helper that accepts a router or procedure so that you can easily provide the native function the correct query key.

// Queries
function getQueryKey(
  procedure: AnyQueryProcedure,
  input?: DeepPartial<TInput>,
  type?: QueryType; /** @default 'any' */
): TRPCQueryKey;

// Routers
function getQueryKey(
  router: AnyRouter,
): TRPCQueryKey;

// Mutations
function getQueryKey(
  procedure: AnyMutationProcedure,
): TRPCQueryKey;

type QueryType = "query" | "infinite" | "any";
// for useQuery ──┘         │            │
// for useInfiniteQuery ────┘            │
// will match all ───────────────────────┘

note

The query type any will match all queries in the cache only if the svelte query method where it's used uses fuzzy matching. See TanStack/query#5111 (comment) for more context.

src/lib/MyComponent.svelte

<script lang="ts">
  import { useIsFetching, useQueryClient } from '@tanstack/svelte-query';
  import { getQueryKey } from '@bevm0/trpc-svelte-query';
  import { trpc } from '$lib/utils/trpc';

  const queryClient = useQueryClient();

  const posts = trpc.post.list.useQuery();

  // See if a query is fetching
  const postListKey = getQueryKey(trpc.post.list, undefined, 'query');
  const isFetching = useIsFetching(postListKey);

  // Set some query defaults for an entire router
  const postKey = getQueryKey(trpc.post);
  queryClient.setQueryDefaults(postKey, { staleTime: 30 * 60 * 1000 });
</script>

<h1>Is Fetching</h1>
<p>{$isFetching}</p>

{...}