[DevTools] Simplify Context Change Tracking in Profiler #30896
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hoxyq
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Sep 6, 2024
We shouldn't use getElementTypeForFiber for branching. That's more of a description thing - not detecting what type of Fiber it is. That's what tags are for. We also shouldn't pass random objects to getChangedX functions and then try to match the type. We can just use the tag to know if it is Class or a Function that might have Hooks.
We don't need to track old context values for modern context since those values exist on the old Fiber already. At least in all the versions that we're getting the current value. This works the same for classes and functions (or anything else that uses contexts). This technique doesn't work for legacy though but that has long been deprecated and is removed completely in 19.
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sebmarkbage
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Sep 7, 2024
Stacked on #30896. The problem with the `getUpdatersList` function is that it iterates over Fibers and then looks up each of those Fibers in the fiberToFiberInstanceMap which we ideally could get rid of. However, every time an updater comes into play for a commit it must mean that something below the updater itself updated and so the updater will also be cloned which means we'll pass it on the way down when traversing the tree in the commit. When we do this traversal, we can just look if the Fiber is in the updater set and if so add it to the updater list as we go.
This was referenced Sep 9, 2024
gnoff
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Sep 12, 2024
**breaking change for canary users: Bumps peer dependency of React from `19.0.0-rc-7771d3a7-20240827` to `19.0.0-rc-94e652d5-20240912`** [diff facebook/react@7771d3a7...94e652d5](facebook/react@7771d3a...94e652d) <details> <summary>React upstream changes</summary> - facebook/react#30952 - facebook/react#30950 - facebook/react#30946 - facebook/react#30934 - facebook/react#30947 - facebook/react#30945 - facebook/react#30938 - facebook/react#30936 - facebook/react#30879 - facebook/react#30888 - facebook/react#30931 - facebook/react#30930 - facebook/react#30832 - facebook/react#30929 - facebook/react#30926 - facebook/react#30925 - facebook/react#30905 - facebook/react#30900 - facebook/react#30910 - facebook/react#30906 - facebook/react#30899 - facebook/react#30919 - facebook/react#30708 - facebook/react#30907 - facebook/react#30897 - facebook/react#30896 - facebook/react#30895 - facebook/react#30887 - facebook/react#30889 - facebook/react#30893 - facebook/react#30892 - facebook/react#30891 - facebook/react#30882 - facebook/react#30881 - facebook/react#30870 - facebook/react#30849 - facebook/react#30878 - facebook/react#30865 - facebook/react#30869 - facebook/react#30875 - facebook/react#30800 - facebook/react#30762 - facebook/react#30831 - facebook/react#30866 - facebook/react#30853 - facebook/react#30850 - facebook/react#30847 - facebook/react#30842 - facebook/react#30837 - facebook/react#30848 - facebook/react#30844 - facebook/react#30839 - facebook/react#30802 - facebook/react#30841 - facebook/react#30827 - facebook/react#30826 - facebook/react#30825 - facebook/react#30824 - facebook/react#30840 - facebook/react#30838 - facebook/react#30836 - facebook/react#30819 - facebook/react#30816 - facebook/react#30814 - facebook/react#30813 - facebook/react#30812 - facebook/react#30811 </details> --------- Co-authored-by: vercel-release-bot <[email protected]>
This was referenced Sep 25, 2024
hoxyq
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Sep 25, 2024
Full list of changes: * refactor: data source for errors and warnings tracking is now in Store ([hoxyq](https://github.com/hoxyq) in [#31010](#31010)) * fix: consider alternate as a key for componentLogsEntry when inspecting raw fiber instance ([hoxyq](https://github.com/hoxyq) in [#31009](#31009)) * Fix: profiling crashes #30661 #28838 ([EdmondChuiHW](https://github.com/EdmondChuiHW) in [#31024](#31024)) * chore: remove using local storage for persisting console settings on the frontend ([hoxyq](https://github.com/hoxyq) in [#31002](#31002)) * feat: display message if user ended up opening hook script ([hoxyq](https://github.com/hoxyq) in [#31000](#31000)) * feat: expose installHook with settings argument from react-devtools-core/backend ([hoxyq](https://github.com/hoxyq) in [#30987](#30987)) * chore: remove settings manager from react-devtools-core ([hoxyq](https://github.com/hoxyq) in [#30986](#30986)) * feat[react-devtools/extension]: use chrome.storage to persist settings across sessions ([hoxyq](https://github.com/hoxyq) in [#30636](#30636)) * refactor[react-devtools]: propagate settings from global hook object to frontend ([hoxyq](https://github.com/hoxyq) in [#30610](#30610)) * chore[react-devtools]: extract some utils into separate modules to unify implementations ([hoxyq](https://github.com/hoxyq) in [#30597](#30597)) * refactor[react-devtools]: move console patching to global hook ([hoxyq](https://github.com/hoxyq) in [#30596](#30596)) * refactor[react-devtools]: remove browserTheme from ConsolePatchSettings ([hoxyq](https://github.com/hoxyq) in [#30566](#30566)) * feat[react-devtools]: add settings to global hook object ([hoxyq](https://github.com/hoxyq) in [#30564](#30564)) * fix: add Error prefix to Error objects names ([hoxyq](https://github.com/hoxyq) in [#30969](#30969)) * Add enableComponentPerformanceTrack Flag ([sebmarkbage](https://github.com/sebmarkbage) in [#30960](#30960)) * fix[rdt/fiber/renderer.js]: getCurrentFiber can be injected as null ([hoxyq](https://github.com/hoxyq) in [#30968](#30968)) * disable `enableSiblingPrerendering` in experimental channel ([gnoff](https://github.com/gnoff) in [#30952](#30952)) * refactor[react-devtools]: initialize renderer interface early ([hoxyq](https://github.com/hoxyq) in [#30946](#30946)) * Start prerendering Suspense retries immediately ([acdlite](https://github.com/acdlite) in [#30934](#30934)) * refactor[Agent/Store]: Store to send messages only after Agent is initialized ([hoxyq](https://github.com/hoxyq) in [#30945](#30945)) * refactor[RendererInterface]: expose onErrorOrWarning and getComponentStack ([hoxyq](https://github.com/hoxyq) in [#30931](#30931)) * Implement getComponentStack and onErrorOrWarning for replayed Flight logs ([sebmarkbage](https://github.com/sebmarkbage) in [#30930](#30930)) * Use Unicode Atom Symbol instead of Atom Emoji ([sebmarkbage](https://github.com/sebmarkbage) in [#30832](#30832)) * Improve Layering Between Console and Renderer ([sebmarkbage](https://github.com/sebmarkbage) in [#30925](#30925)) * Add Map for Server Component Logs ([sebmarkbage](https://github.com/sebmarkbage) in [#30905](#30905)) * Delete fiberToFiberInstanceMap ([sebmarkbage](https://github.com/sebmarkbage) in [#30900](#30900)) * Add Flight Renderer ([sebmarkbage](https://github.com/sebmarkbage) in [#30906](#30906)) * Refactor Error / Warning Count Tracking ([sebmarkbage](https://github.com/sebmarkbage) in [#30899](#30899)) * [flow] Upgrade Flow to 0.245.2 ([SamChou19815](https://github.com/SamChou19815) in [#30919](#30919)) * Separate RDT Fusebox into single-panel entry points ([huntie](https://github.com/huntie) in [#30708](#30708)) * Build Updater List from the Commit instead of Map ([sebmarkbage](https://github.com/sebmarkbage) in [#30897](#30897)) * Simplify Context Change Tracking in Profiler ([sebmarkbage](https://github.com/sebmarkbage) in [#30896](#30896)) * Remove use of .alternate in root and recordProfilingDurations ([sebmarkbage](https://github.com/sebmarkbage) in [#30895](#30895)) * Handle reordered contexts in Profiler ([sebmarkbage](https://github.com/sebmarkbage) in [#30887](#30887)) * Refactor Forcing Fallback / Error of Suspense / Error Boundaries ([sebmarkbage](https://github.com/sebmarkbage) in [#30870](#30870)) * Avoid getFiberIDUnsafe in debug() Helper ([sebmarkbage](https://github.com/sebmarkbage) in [#30878](#30878)) * Include some Filtered Fiber Instances ([sebmarkbage](https://github.com/sebmarkbage) in [#30865](#30865)) * Track root instances in a root Map ([sebmarkbage](https://github.com/sebmarkbage) in [#30875](#30875)) * Track all public HostInstances in a Map ([sebmarkbage](https://github.com/sebmarkbage) in [#30831](#30831)) * Support VirtualInstances in findAllCurrentHostInstances ([sebmarkbage](https://github.com/sebmarkbage) in [#30853](#30853)) * Add Filtering of Environment Names ([sebmarkbage](https://github.com/sebmarkbage) in [#30850](#30850)) * Support secondary environment name when it changes ([sebmarkbage](https://github.com/sebmarkbage) in [#30842](#30842)) * Increase max payload for websocket in standalone app ([runeb](https://github.com/runeb) in [#30848](#30848)) * Filter Server Components ([sebmarkbage](https://github.com/sebmarkbage) in [#30839](#30839)) * Track virtual instances on the tracked path for selections ([sebmarkbage](https://github.com/sebmarkbage) in [#30802](#30802)) * Remove displayName from inspected data ([sebmarkbage](https://github.com/sebmarkbage) in [#30841](#30841)) * chore[react-devtools/hook]: remove unused native values ([hoxyq](https://github.com/hoxyq) in [#30827](#30827)) * chore[react-devtools/extensions]: remove unused storage permission ([hoxyq](https://github.com/hoxyq) in [#30826](#30826)) * fix[react-devtools/extensions]: fixed tabs API calls and displaying restricted access popup ([hoxyq](https://github.com/hoxyq) in [#30825](#30825)) * feat[react-devtools]: support Manifest v3 for Firefox extension ([hoxyq](https://github.com/hoxyq) in [#30824](#30824)) * Reconcile Fibers Against Previous Children Instances ([sebmarkbage](https://github.com/sebmarkbage) in [#30822](#30822)) * Remove findCurrentFiberUsingSlowPathByFiberInstance ([sebmarkbage](https://github.com/sebmarkbage) in [#30818](#30818)) * Track Tree Base Duration of Virtual Instances ([sebmarkbage](https://github.com/sebmarkbage) in [#30817](#30817)) * Use Owner Stacks to Implement View Source of a Server Component ([sebmarkbage](https://github.com/sebmarkbage) in [#30798](#30798)) * Make function inspection instant ([sebmarkbage](https://github.com/sebmarkbage) in [#30786](#30786)) * Make Functions Clickable to Jump to Definition ([sebmarkbage](https://github.com/sebmarkbage) in [#30769](#30769)) * Support REACT_LEGACY_ELEMENT_TYPE for formatting JSX ([sebmarkbage](https://github.com/sebmarkbage) in [#30779](#30779)) * Find owners from the parent path that matches the Fiber or ReactComponentInfo ([sebmarkbage](https://github.com/sebmarkbage) in [#30717](#30717)) * [Flight/DevTools] Pass the Server Component's "key" as Part of the ReactComponentInfo ([sebmarkbage](https://github.com/sebmarkbage) in [#30703](#30703)) * Hide props section if it is null ([sebmarkbage](https://github.com/sebmarkbage) in [#30696](#30696)) * Support Server Components in Tree ([sebmarkbage](https://github.com/sebmarkbage) in [#30684](#30684)) * fix[react-devtools/InspectedElement]: fixed border stylings when some of the panels are not rendered ([hoxyq](https://github.com/hoxyq) in [#30676](#30676)) * Compute new reordered child set from the instance tree ([sebmarkbage](https://github.com/sebmarkbage) in [#30668](#30668)) * Unmount instance by walking the instance tree instead of the fiber tree ([sebmarkbage](https://github.com/sebmarkbage) in [#30665](#30665)) * Further Refactoring of Unmounts ([sebmarkbage](https://github.com/sebmarkbage) in [#30658](#30658)) * Remove lodash.throttle ([sebmarkbage](https://github.com/sebmarkbage) in [#30657](#30657)) * Unmount by walking previous nodes no longer in the new tree ([sebmarkbage](https://github.com/sebmarkbage) in [#30644](#30644)) * Build up DevTools Instance Shadow Tree ([sebmarkbage](https://github.com/sebmarkbage) in [#30625](#30625)) * chore[packages/react-devtools]: remove unused index.js ([hoxyq](https://github.com/hoxyq) in [#30579](#30579)) * Track DOM nodes to Fiber map for HostHoistable Resources ([sebmarkbage](https://github.com/sebmarkbage) in [#30590](#30590)) * Rename mountFiberRecursively/updateFiberRecursively ([sebmarkbage](https://github.com/sebmarkbage) in [#30586](#30586)) * Allow Highlighting/Inspect HostSingletons/Hoistables and Resources ([sebmarkbage](https://github.com/sebmarkbage) in [#30584](#30584)) * chore[react-devtools]: add global for native and use it to fork backend implementation ([hoxyq](https://github.com/hoxyq) in [#30533](#30533)) * Enable pointEvents while scrolling ([sebmarkbage](https://github.com/sebmarkbage) in [#30560](#30560)) * Make Element Inspection Feel Snappy ([sebmarkbage](https://github.com/sebmarkbage) in [#30555](#30555)) * Track the parent DevToolsInstance while mounting a tree ([sebmarkbage](https://github.com/sebmarkbage) in [#30542](#30542)) * Add DevToolsInstance to Store Stateful Information ([sebmarkbage](https://github.com/sebmarkbage) in [#30517](#30517)) * Implement "best renderer" by taking the inner most matched node ([sebmarkbage](https://github.com/sebmarkbage) in [#30494](#30494)) * Rename NativeElement to HostInstance in the Bridge ([sebmarkbage](https://github.com/sebmarkbage) in [#30491](#30491)) * Rename Fiber to Element in the Bridge Protocol and RendererInterface ([sebmarkbage](https://github.com/sebmarkbage) in [#30490](#30490)) * Stop filtering owner stacks ([sebmarkbage](https://github.com/sebmarkbage) in [#30438](#30438)) * [Fiber] Call life-cycles with a react-stack-bottom-frame stack frame ([sebmarkbage](https://github.com/sebmarkbage) in [#30429](#30429)) * [Flight] Prefix owner stacks added to the console.log with the current stack ([sebmarkbage](https://github.com/sebmarkbage) in [#30427](#30427)) * [BE] switch to hermes parser for prettier ([kassens](https://github.com/kassens) in [#30421](#30421)) * Implement Owner Stacks ([sebmarkbage](https://github.com/sebmarkbage) in [#30417](#30417)) * [BE] upgrade prettier to 3.3.3 ([kassens](https://github.com/kassens) in [#30420](#30420)) * [ci] Add yarn_test_build job to gh actions * [Fizz] Refactor Component Stack Nodes ([sebmarkbage](https://github.com/sebmarkbage) in [#30298](#30298)) * Print component stacks as error objects to get source mapping ([sebmarkbage](https://github.com/sebmarkbage) in [#30289](#30289)) * Upgrade flow to 0.235.0 ([kassens](https://github.com/kassens) in [#30118](#30118)) * fix: path handling in react devtools ([Jack-Works](https://github.com/Jack-Works) in [#29199](#29199))
hoxyq
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Oct 1, 2024
We've dropped the support for detecting changes in legacy Contexts in #30896.
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When Context change tracking was added to support modern Context it relied on the "memoizedValue" to read the current value. This only works in React 18+ when it was added to support Lazy Context Propagation. However, the backend stored the old value the same way it used to work for legacy Context in a global map. This was unnecessary since we also have the old value on the previous Fiber.
This removes all the costly tracking of previous values for every Fiber that uses Contexts slowing down profiling. Instead, we just compare the Contexts from
The downside is that this no longer supports detecting changes due to legacy Context because it doesn't have a similar "previous" value. However, legacy Context has long been deprecated and is completely removed in 19. So I don't think it's worth supporting since you have to be on an old version and actually use legacy Context and trying to profile something that updates it. Which btw, updating legacy contexts only worked at all from 16 something when we made updates work. So it was unusual even in the slight gap where you could and before you had migrated to modern Context introduced in 16.3.