v3.9.0-alpha.5

Minor Changes

• #11345 1759066a8 Thanks @phryneas! - QueryManager.inFlightLinkObservables now uses a strong Trie as an internal data structure.

  Warning: requires @apollo/experimental-nextjs-app-support update

  If you are using @apollo/experimental-nextjs-app-support, you will need to update that to at least 0.5.2, as it accesses this internal data structure.

• #11300 a8158733c Thanks @jerelmiller! - Introduces a new useLoadableQuery hook. This hook works similarly to useBackgroundQuery in that it returns a queryRef that can be used to suspend a component via the useReadQuery hook. It provides a more ergonomic way to load the query during a user interaction (for example when wanting to preload some data) that would otherwise be clunky with useBackgroundQuery.

  function App() {
    const [loadQuery, queryRef, { refetch, fetchMore, reset }] =
      useLoadableQuery(query, options);
  
    return (
      <>
        <button onClick={() => loadQuery(variables)}>Load query</button>
        <Suspense fallback={<SuspenseFallback />}>
          {queryRef && <Child queryRef={queryRef} />}
        </Suspense>
      </>
    );
  }
  
  function Child({ queryRef }) {
    const { data } = useReadQuery(queryRef);
  
    // ...
  }

Patch Changes

• #11356 cc4ac7e19 Thanks @phryneas! - Fix a potential memory leak in FragmentRegistry.transform and FragmentRegistry.findFragmentSpreads that would hold on to passed-in DocumentNodes for too long.

• #11370 25e2cb431 Thanks @phryneas! - parse function: improve memory management

  • use LRU WeakCache instead of Map to keep a limited number of parsed results
  • cache is initiated lazily, only when needed
  • expose parse.resetCache() method

• #11389 139acd115 Thanks @phryneas! - documentTransform: use optimism and WeakCache instead of directly storing data on the Trie

• #11358 7d939f80f Thanks @phryneas! - Fixes a potential memory leak in Concast that might have been triggered when Concast was used outside of Apollo Client.

• #11344 bd2667619 Thanks @phryneas! - Add a resetCache method to DocumentTransform and hook InMemoryCache.addTypenameTransform up to InMemoryCache.gc

• #11367 30d17bfeb Thanks @phryneas! - print: use WeakCache instead of WeakMap

• #11385 d9ca4f082 Thanks @phryneas! - ensure defaultContext is also used for mutations and subscriptions

• #11387 4dce8673b Thanks @phryneas! - QueryManager.transformCache: use WeakCache instead of WeakMap

• #11371 ebd8fe2c1 Thanks @phryneas! - Clarify types of EntityStore.makeCacheKey.

• #11355 7d8e18493 Thanks @phryneas! - InMemoryCache.gc now also triggers FragmentRegistry.resetCaches (if there is a FragmentRegistry)