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Fix nullable refetchedFragmentRef in checkSameIDAfterRefetch - #4945
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KrzysztofKarol wants to merge 3 commits into
Closed
KrzysztofKarol wants to merge 3 commits into
KrzysztofKarol wants to merge 3 commits into
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Contributor
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Could you share more about what this fixes? Would it be possible to add tests demonstrating how this changes behavior? |
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Author
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Hey @captbaritone, I updated the description. I hope it is understandable now. If not - let me know and I will try to rephrase it. |
Contributor
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Could you add a test case in relay-hooks/tests/useRefetchableFragmentNode-test.js? That will be helpful to verify the fix and prevent future regressions. |
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@captbaritone has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator. |
Contributor
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I'll import and see if I can write a test. Thanks for the PR! |
Contributor
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@captbaritone merged this pull request in 677c1e3. |
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I call useRefetchableFragment(), e.g. getSomethingById.
The backend may return null ("Something" no longer exists).
Then the queryData is
{node: null}fragmentRefPathInResponse is
['node']so fragmentRef (refetchedFragementRef) is
nulland the
var resultID = refetchedFragmentRef[ID_KEY]throwscannot read properties of null.