Part of ENG-3966
This is a controversial diff, the approach is discussed in comments.
Detailed description and all TODO follow-ups are tracked in ENG-4285. As soon as RN / Flow is upgraded, these should be reverted.
Depends on D8370
Details
Details
This stack is tested altogether, CI will fail at this point due to Flow breaking changes: Some Flow issues are worked around by this diff, remaining ones are fixed in D8373
Actual test plan in the last diff.
Diff Detail
Diff Detail
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- rCOMM Comm
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Event Timeline
| native/input/input-state-container.react.js | ||
|---|---|---|
| 977 | Reducer accepts both blobURI or holder so we can now use the new field here when dispatching update | |
Comment Actions
This is a lot more anys and $FlowFixMes than I expected, and they aren't being immediately cast to a proper type after the any-cast. I'll need to take a closer look and try to type it myself before I can accept this, as I suspect there are better ways to do it. I'm also not sure that every single any-cast and $FlowFixMe is related to the issue that will be solved in the updated version of Flow
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Also it looks like this fails Flow CI
Ah I guess this is intentional? I'm having a hard time following this diff stack...
I suspect it would have been less confusing / complicated to simply appease Flow by destructuring where necessary
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I am behind on a bunch of things and don't have the time to investigate this further right now, but I strongly suspect that we can do better here
A good place to start would be to apply my suggestions in D8370. After that, the main goal would be to significantly reduce the use of any or $FlowFixMe. Like unsafe blocks in Rust, these should be extremely rare, and if you have a strong need for one, you can ideally limit the use of any or $FlowFixMe to one specific place, and immediately cost the result to something else.
@bartek – if you're still stuff following that, let me know and I'll patch this locally and take a look
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I didn't mention this in the test plan, I probably should. This one fixes workarounds some Flow issues, but not all. The remaining ones are fixed by D8373
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Rebased on applied feedback in parent diff, unfortunately no meaningful improvements here.
I was able to limit it to 3 places right now. It's one place if excluded the test file - see inline comment
| lib/reducers/message-reducer.test.js | ||
|---|---|---|
| 69–71 ↗ | (On Diff #28329) | These are still failing with: │ Cannot call `reduceMessageStore` with `updateMultiMediaMessageMediaAction` bound to `action` because property `localMediaSelection` is missing in `Shape` [1] but exists in object literal [2] in property `payload.mediaUpdate`. Flow (incompatible-call) [70, 5] Flow completely cannot understand Shape<Media> properly. When removed the localMediaSelection, it started the same with every other prop.erty. I'm afraid we need Flow 0.203 to fix this (0.202 doesn't work): playground link |
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Thanks for pointing to Shape<Media>. I patched this locally and found we can improve things a little bit after fixing that type.
I got it down from 6 $FlowFixMes and 1 any to just 2 $FlowFixMes using this patch: https://gist.github.com/Ashoat/d83301775bc01c7f71af3350ce440dbb
Note that I was working off a custom branch, since D8374 hasn't been rebased on top of the latest version of this diff. I ran yarn arcpatch D8374 and then tried to apply the changes in the most recent revision of this diff, but it's possible I missed something. Let me know if it doesn't work in your branch.
Comment Actions
Thank you for doing this! Splitting the Shape<Media> into a union of shapes is a clever trick!
Note that I was working off a custom branch, since D8374 hasn't been rebased on top of the latest version of this diff. I ran yarn arcpatch D8374 and then tried to apply the changes in the most recent revision of this diff, but it's possible I missed something. Let me know if it doesn't work in your branch.
Ah, I should have rebased the remaining diffs too.
I'll apply your patch and fix/tweak some comments