fix(queryClient): make sure that setQueryData can return undefined from the updater function on type level

[TkDodo]

the only runtime tests we had didn't use the previous value, so the generic defaults to unknown; the TS error becomes apparent when providing a generic to setQueryData

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[codecov]

Codecov Report

Merging #3615 (9d5931a) into beta (0085137) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             beta    #3615   +/-   ##
=======================================
  Coverage   96.93%   96.93%           
=======================================
  Files          48       48           
  Lines        2383     2383           
  Branches      709      709           
=======================================
  Hits         2310     2310           
  Misses         71       71           
  Partials        2        2           

Impacted Files	Coverage Δ
src/core/queryClient.ts	100.00% <ø> (ø)

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[tannerlinsley]

🎉 This PR is included in version 4.0.0-beta.12 🎉

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[vladyslavNiemtsev]

Hi, guys!
I noticed the same problem. but for setQueriesData.

[TkDodo]

@vladyslavNiemtsev good point, it's missing there as well. would you like to contribute it?

[TkDodo]

PR:

• fix(types): make sure queryClient.setQueryData can return undefined from the updater #3657

[vladyslavNiemtsev]

@TkDodo Thanks for this quick PR!

[juunzzi]

hi i'm juunzzi and euijinkk

우리도 이 문제에 직면했는데 이 풀리퀘 수정 사항을 현재 react-query에서는 사용할 수 없더라구 이 함수의 타이핑 자체를 조금 수정해서 사용하려 하고 있어!

우리가 먼저 contributor가 되고 싶었는데 아쉽다...

얼른 베타버젼 배포해줘 (4.0.0에서 사용할 수 있는 줄 몰랐네.. 최신 버전에는 반영되있더라 우리도 업그레이드 하거나 타입을 수정해서 사용하거나 해야겠어)