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LHN list re-render #36927

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merged 9 commits into from
Mar 12, 2024
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@perunt perunt commented Feb 20, 2024

here I'm trying to address the bug described: #36420 (comment)

discussion: https://expensify.slack.com/archives/C05LX9D6E07/p1708011570713419

Details

Fixed Issues

$ #36420 (comment)
PROPOSAL:

Tests

  • Verify that no errors appear in the JS console

Offline tests

QA Steps

NOTE: This issue occurs only once when you navigate to this screen for the first time.

  1. Log out of the app.
  2. Log back in.
  3. Open the settings screen from the Left-Hand Navigation (LHN).
  4. Check if there is no noticeable delay in the rendering of the settings screen.

Alternate method to reproduce the issue:

  1. Open the chat tab on the LHN.
  2. Restart the Metro bundler.
  3. Switch to the settings screen.
  • Verify that no errors appear in the JS console

PR Author Checklist

  • I linked the correct issue in the ### Fixed Issues section above
  • I wrote clear testing steps that cover the changes made in this PR
    • I added steps for local testing in the Tests section
    • I added steps for the expected offline behavior in the Offline steps section
    • I added steps for Staging and/or Production testing in the QA steps section
    • I added steps to cover failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
    • I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
    • I tested this PR with a High Traffic account against the staging or production API to ensure there are no regressions (e.g. long loading states that impact usability).
  • I included screenshots or videos for tests on all platforms
  • I ran the tests on all platforms & verified they passed on:
    • Android: Native
    • Android: mWeb Chrome
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Screenshots/Videos

Android: Native
Android: mWeb Chrome
iOS: Native
Simulator.Screen.Recording.-.iPhone.15.Pro.-.2024-03-12.at.08.31.32.mp4
iOS: mWeb Safari
Simulator.Screen.Recording.-.iPhone.15.Pro.-.2024-03-12.at.08.33.24.mp4
MacOS: Chrome / Safari
Untitled.mov
MacOS: Desktop
Untitled.mov

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I left some comments, please answer them 🎉

return (
<FreezeWrapper keepVisible={!isSmallScreenWidth}>
<FreezeWrapper>
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Why did you remove this? Is the sidebar still clickable if you e.g. navigate to different reports twice? I think it was handling a case where you have the sidebar visible all the time and navigate deeper in the main stack, but maybe the navigation structure changed in a way that it is not necessary right now?

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FYI I tested this fix locally and the list is still fully clickable on the web, and causes no issues on mobile. It seems plausible that the nav structure changed and this is no loner a case

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keepVisible completely disables freezing for a 'big' screen. I believe the original idea of this chunk was to freeze it directly in such cases. I wonder why we used this approach before. It might be a leftover from the previous navigation structure

@@ -28,8 +27,8 @@ function FreezeWrapper({keepVisible = false, children}: FreezeWrapperProps) {
// if the screen is more than 1 screen away from the current screen, freeze it,
// we don't want to freeze the screen if it's the previous screen because the freeze placeholder
// would be visible at the beginning of the back animation then
if (navigation.getState().index - (screenIndexRef.current ?? 0) > 1) {
InteractionManager.runAfterInteractions(() => setIsScreenBlurred(true));
if (navigation.getState().index - (screenIndexRef.current ?? 0) >= 1) {
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Does the issue with beginning of animation not occur anymore? And did you try to run it in the new arch? I think the case with InteractionManager was needed there only and I think we will want to enable it on web ASAP too.

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I can't pinpoint the any issues with the animations. I haven't tested with new arch though.

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Animation of goBack works ok for me. I haven't tried it with a new arch yet, but it shouldn't be an issue

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FYI I also gave it a spin and wasn't able to experience anything weird related to animations.

@perunt perunt marked this pull request as ready for review February 23, 2024 15:09
@perunt perunt requested a review from a team as a code owner February 23, 2024 15:09
@melvin-bot melvin-bot bot requested review from situchan and removed request for a team February 23, 2024 15:09
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melvin-bot bot commented Feb 23, 2024

@situchan Please copy/paste the Reviewer Checklist from here into a new comment on this PR and complete it. If you have the K2 extension, you can simply click: [this button]

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@perunt, is the purpose of this PR to ensure that the hidden screen freezes when there are two or more screens in the stack navigator?

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perunt commented Feb 23, 2024

I would say the purpose was to freeze the hidden screen once we have two or more screens in the stack. One reliable method to reproduce this issue is to log out and then log in again. It occurs when the stack has two screens. In all other cases, it works as intended.

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okay thank you for the confirmation

@situchan please review the PR when you have time 🙇

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Hey @perunt 👋

Great work ! I was testing out your PR alongside with this PR and It works great. Only thing I want to flag is these two PR appears to go together. For example, only with your PR we still see the slowness between switch but there's no such hang observed. Now, to improve the slowness between switch, the linked PR is important.

I just wanted to flag the above and also below is how these two PRs look together.

Before
before.mp4
After
after.mp4

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perunt commented Feb 26, 2024

hey @hurali97
Just to make sure we're on the same page - are you referring to the initial switching? Could you also compare it with subsequent switchings as well?

If not, have you had a chance to test the switching on the main branch, where the issue with multiple renderItem calls doesn't seem to reproduce? Is the performance still an issue in that scenario?

The key concern here is that on the first switch, we encounter a page that completely freezes for 15-20 seconds, which we need to avoid. If there's an alternative solution, I'd be eager to explore it. The difference might be due to runAfterInteractions. I'll double-check to see if I can manage to execute it in the next frame without disrupting the freeze logic.

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Just to make sure we're on the same page - are you referring to the initial switching? Could you also compare it with subsequent switchings as well?

I am referring to both the initial switch and the subsequent switches. If you notice in the After video, both the initial and subsequent switches are quick which happens because of the PR I linked.

What I am trying to say is your PR for sure fixes the multiple renderItem calls but we still have some slowness in screen rendering after the switch. The switch happens quickly but not the rendering. The PR I linked fixes that and now with both of these PRs we have quick switching, no extra renderItem calls and quick rendering as well.

If not, have you had a chance to test the switching on the main branch, where the issue with multiple renderItem calls doesn't seem to reproduce? Is the performance still an issue in that scenario?

Below you can see how main behaves with your PR changes only. We have no extra renderItem calls and quick switching but delayed rendering.

Main
main_.mp4
Both PRs combined
after.mp4

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What I am trying to say is your PR for sure fixes the multiple renderItem calls but we still have some slowness in screen rendering after the switch.

@hurali97 at least this PR won't cause another performance regression right?

we still have some slowness in screen rendering after the switch

this is already existing bug on main right?

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hurali97 commented Feb 26, 2024

@hurali97 at least this PR won't cause another performance regression right?

From an overview, doesn't look like there will be a regression but we need to test here because in this PR we have some changes to the Freeze wrapper.

this is already existing bug on main right?

That's correct and this is what's addressed in this PR

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perunt commented Feb 26, 2024

Ahh, now I understand—I was concerned my PR might be causing some slowness. Great work on your part! The page loading appears much faster now. I'm confident users will definitely notice the improvemen

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perunt commented Feb 26, 2024

@hurali97 at least this PR won't cause another performance regression right?

Indeed, this PR should not lead to any further performance regression. At least, I haven't observed any such issues so far.

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perunt commented Feb 27, 2024

@situchan, can you please take a look at this?

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yes reviewing today

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situchan commented Feb 28, 2024

Reviewer Checklist

  • I have verified the author checklist is complete (all boxes are checked off).
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Screenshots/Videos

Android: Native
Android: mWeb Chrome
iOS: Native
iOS: mWeb Safari
MacOS: Chrome / Safari
web.mov
MacOS: Desktop

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@perunt can you please add platform screenshots?

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situchan commented Mar 3, 2024

And there's conflict

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perunt commented Mar 4, 2024

@perunt can you please add platform screenshots?

it was a web issue, i have screen records for it in MacOS: Chrome / Safari section

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situchan commented Mar 8, 2024

This also happens on main so out of scope. But is this bug already reported or being fixed elsewhere?

After switching to wrench tab and back, not found page shows

Screen.Recording.2024-03-08.at.7.49.04.PM.mov

if ((navigation.getState()?.index ?? 0) - (screenIndexRef.current ?? 0) > 1) {
InteractionManager.runAfterInteractions(() => setIsScreenBlurred(true));

if ((navigation.getState()?.index ?? 0) - (screenIndexRef.current ?? 0) >= 1) {
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I see that you changed to >= 1 from > 1. Isn't this opposed to this comment?

    // we don't want to freeze the screen if it's the previous screen because the freeze placeholder
    // would be visible at the beginning of the back animation then

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I see that we no longer use the placeholder component. I guess this comment was not changed after the placeholder was removed. I will do it now

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@perunt this actually caused regression.
As this affects all platforms, please test and add remaining platforms, not only web.

this branch:

Screen.Recording.2024-03-11.at.10.54.20.PM.mov

main:

Screen.Recording.2024-03-11.at.10.54.42.PM.mov

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@situchan, thanks for pointing it out.
I retested it, and it looks like a freshly added nullish coalescing operator can let me remove this check, so I assume we can't receive navigation immediately in some cases. I'm adding the rest of the recordings.

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situchan commented Mar 8, 2024

It doesn't make sense to link #35602 in Fixed Issues as this PR isn't supposed to that.

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perunt commented Mar 11, 2024

It doesn't make sense to link #35602 in Fixed Issues as this PR isn't supposed to that.

switched to the correct one #36420 (comment)

@situchan, can I somehow speed up merging this PR?

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@situchan, can I somehow speed up merging this PR?

I am just waiting for #36927 (comment) from @getusha to confirm that it's safe.
Otherwise looks good.

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There's performance lag a bit when opening Search page on both main and this branch. I don't find any difference.
So I'd say this is not regression.

Screen.Recording.2024-03-11.at.10.36.53.PM.mov

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code looks good to me

are there blocking issues or conversations to be resolved before we merge this PR?

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perunt commented Mar 11, 2024

I don't know about such issues, so it's clean from my side

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code looks good to me

are there blocking issues or conversations to be resolved before we merge this PR?

#36927 (comment)

@hayata-suenaga hayata-suenaga self-requested a review March 11, 2024 19:54
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@perunt please check the regression described in this comment.

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perunt commented Mar 12, 2024

@hayata-suenaga I'm resolving this, thanks!

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@situchan could you retest when you have time? 🙇

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testing

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melvin-bot bot commented Mar 12, 2024

🎯 @situchan, thanks for reviewing and testing this PR! 🎉

An E/App issue has been created to issue payment here: #38170.

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The code is now simplified and affects only web platform.
Tests well but still be on the lookout for any regressions we might have missed.

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thank you so much for your work @perunt 😄

@hayata-suenaga hayata-suenaga merged commit 9ad7ca0 into Expensify:main Mar 12, 2024
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✋ This PR was not deployed to staging yet because QA is ongoing. It will be automatically deployed to staging after the next production release.

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🚀 Deployed to staging by https://github.com/hayata-suenaga in version: 1.4.52-0 🚀

platform result
🤖 android 🤖 success ✅
🖥 desktop 🖥 success ✅
🍎 iOS 🍎 success ✅
🕸 web 🕸 success ✅

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🚀 Deployed to production by https://github.com/Beamanator in version: 1.4.52-6 🚀

platform result
🤖 android 🤖 success ✅
🖥 desktop 🖥 success ✅
🍎 iOS 🍎 success ✅
🕸 web 🕸 success ✅

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8 participants