dehydrateNew

[aleksanderd]

Hi!

What about dehydrateNew function? Is there any plans, drafts, etc?

Thank you!

https://tanstack.com/query/latest/docs/framework/react/guides/advanced-ssr

As a future improvement, we might look into creating a dehydrateNew() function (name pending) that only dehydrate queries that are new since the last call to dehydrateNew(). Feel free to get in touch if this sounds interesting and like something you want to help out with!

[aleksanderd]

is it a good solution?

export const getDehydrateNew = cache(() => {
  const doneHashes: string[] = [];

  return (client: QueryClient) =>
    dehydrate(client, {
      shouldDehydrateQuery: ({ queryHash }) => {
        if (doneHashes.includes(queryHash)) {
          return false;
        } else {
          doneHashes.push(queryHash);
          return true;
        }
      },
    });
});

RSC:

...
const dehydrateNew = getDehydrateNew();
const dehydratedState = dehydrateNew(queryClient);
...