Reproduce RTK Query TS Perf Issues

See reproduction video here https://cln.sh/bHBsDGGm.

STR:

1. Open ./src/store.ts
2. Start typing store.getState(). and wait for intellisense to show up

Expected:

Immediate results (< 300ms).

Actual:

Results take >2 seconds to show up.

I think I found a possible reason. If you open ./node_modules/@reduxjs/toolkit/dist/query/react/module.d.ts and in line 23, remove HooksWithUniqueNames:

} & HooksWithUniqueNames<Definitions>;

Change to:

}

Then follow the STR above, you'll get instant results.

Tip:

If you want to get accurate timings, open the Command Palette in VSCode and choose "TypeScript: Open TS Server log", it might ask you enable TS logging, approve and then copy the path to the tsserver.log file that just opened (command palette -> "File: Copy Path of Active File"), now start a terminal and run:

tail -f "<path_to_tsserver.log>" | grep "completionInfo: elapsed time"