feat(typing): type response

[CaselIT]

follow up of #2299

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (9f47efb) to head (3b88210).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #2304   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files           63        63           
  Lines         7539      7591   +52     
  Branches      1281      1281           
=========================================
+ Hits          7539      7591   +52     

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[CaselIT]

@vytas7 updated

[CaselIT]

@vytas7 regarding the failure to install rapidjson in pypy, did you already had a fix in a PR?

[vytas7]

@vytas7 regarding the failure to install rapidjson in pypy, did you already had a fix in a PR?

Yes, but that PR still needs work, it is in Draft: https://github.com/falconry/falcon/pull/2324/files#diff-493968368d3cc25459cbc290f4f38ee1444eb298e0c5f840672c3dfce9b9f291R26.

[CaselIT]

will cherry pick b4a6a4d

[CaselIT]

seems to be working. pipeline should now be green

[vytas7]

This looks good for the most of it, thanks!
As discussed, I want to privatize some things related to typing, but we can take a stab at that in a bit more systematic fashion in the cleanup issue.