fix: Use optimistic search params in app router #718
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franky47
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This was referenced Nov 11, 2024
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When using a combination of
shallow: false,startTransition(fromuseTransition), and slow RSC computation, there can be a race condition where sending two or more updates before the first RSC response arrives, the useSearchParams update with the intermediate value and cause optimistic URL & UI updates (internal state) to sync to incorrect values. When the last RSC payload finished streaming in, the whole UI became eventually consistent, but this caused flickering issues.Fixing this by feeding the nuqs hooks an optimistic version of
useSearchParamsin the app router adapter, and triggering this optimistic update when updating the URL (where we already do this kind of optimistic update with a shallow update before calling the router).See #714.