react-component / react-component/table

expandedRowRender is called 2 times instead 1 when row is expanded in versions >= 7

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Dominant language
TypeScript
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Description

I noticed that after upgrade from ant.design 3.x to 4.x
I've got flickering effects after expanding row.
The cause was multiple calls to expandedRowRender.
I tracked this new behavior to versions starting with 7 of this project.

I managed to write tests for it
working for version 6.x
https://github.com/KonradKuznicki/table/commit/93ccc85fa9aae66dccadff83071cff737868b20c

and failing for version 7.x
https://github.com/KonradKuznicki/table/commit/d40d6e05d690dfa38c91ac021ac862153a45ed4c

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by comparing the version 6.x and 7.x changes in the two linked commits, then inspect the tests added for expandedRowRender invocation counts. Reproduce the expansion case and confirm that expandedRowRender is called once, with the regression test passing for the affected versions.

Written by the indexing model from the issue text.

Assessment

Tech stack
react, typescript
Domain
frontend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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