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Remove feature flag enableStrictEffects #25387

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merged 2 commits into from
Oct 19, 2022

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sammy-SC
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@sammy-SC sammy-SC commented Oct 3, 2022

enableStrictEffects has been shipped everywhere except React Native OSS. Let's ship it to get consistent behaviour of StrictMode and remove unnecessary feature flag.

@facebook-github-bot facebook-github-bot added CLA Signed React Core Team Opened by a member of the React Core Team labels Oct 3, 2022
@sammy-SC sammy-SC force-pushed the remove-feature-flag-enableStrictEffects branch from 9f6cf38 to ce6a837 Compare October 3, 2022 14:45
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sizebot commented Oct 3, 2022

Comparing: 2872a26...31e85c2

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name +/- Base Current +/- gzip Base gzip Current gzip
oss-stable/react-dom/cjs/react-dom.production.min.js +0.01% 135.46 kB 135.48 kB +0.02% 43.44 kB 43.45 kB
oss-experimental/react-dom/cjs/react-dom.production.min.js +0.01% 147.96 kB 147.98 kB +0.02% 47.32 kB 47.33 kB
facebook-www/ReactDOM-prod.classic.js +0.03% 491.72 kB 491.87 kB +0.05% 87.50 kB 87.54 kB
facebook-www/ReactDOM-prod.modern.js +0.03% 477.00 kB 477.15 kB +0.05% 85.27 kB 85.31 kB
facebook-www/ReactDOMForked-prod.classic.js +0.03% 491.72 kB 491.87 kB +0.05% 87.50 kB 87.54 kB

Significant size changes

Includes any change greater than 0.2%:

Expand to show
Name +/- Base Current +/- gzip Base gzip Current gzip
oss-stable-semver/react-test-renderer/umd/react-test-renderer.development.js +0.87% 724.15 kB 730.42 kB +0.58% 151.72 kB 152.60 kB
oss-stable/react-test-renderer/umd/react-test-renderer.development.js +0.87% 724.18 kB 730.45 kB +0.58% 151.74 kB 152.62 kB
oss-stable-semver/react-test-renderer/cjs/react-test-renderer.development.js +0.85% 691.40 kB 697.31 kB +0.57% 150.17 kB 151.02 kB
oss-stable/react-test-renderer/cjs/react-test-renderer.development.js +0.85% 691.42 kB 697.33 kB +0.57% 150.19 kB 151.05 kB
oss-experimental/react-test-renderer/umd/react-test-renderer.development.js +0.83% 754.47 kB 760.74 kB +0.57% 157.49 kB 158.38 kB
oss-experimental/react-test-renderer/cjs/react-test-renderer.development.js +0.82% 720.27 kB 726.18 kB +0.55% 155.88 kB 156.74 kB
facebook-react-native/react-test-renderer/cjs/ReactTestRenderer-dev.js +0.81% 734.28 kB 740.20 kB +0.58% 157.37 kB 158.29 kB
react-native/implementations/ReactFabric-dev.js +0.73% 812.48 kB 818.40 kB +0.52% 176.16 kB 177.08 kB
react-native/implementations/ReactNativeRenderer-dev.js +0.72% 822.00 kB 827.92 kB +0.51% 178.73 kB 179.63 kB
facebook-www/ReactDOMTesting-dev.modern.js +0.54% 1,090.45 kB 1,096.36 kB +0.36% 243.30 kB 244.18 kB
oss-experimental/react-dom/cjs/react-dom-unstable_testing.development.js +0.54% 1,093.97 kB 1,099.88 kB +0.35% 244.34 kB 245.20 kB
facebook-www/ReactDOMTesting-dev.classic.js +0.53% 1,119.31 kB 1,125.23 kB +0.35% 249.02 kB 249.90 kB
facebook-www/ReactIs-dev.classic.js = 9.62 kB 9.56 kB = 2.54 kB 2.53 kB
facebook-www/ReactIs-dev.modern.js = 9.62 kB 9.56 kB = 2.54 kB 2.53 kB

Generated by 🚫 dangerJS against 31e85c2

@sammy-SC sammy-SC marked this pull request as ready for review October 5, 2022 13:46
@@ -511,7 +504,7 @@ export function createFiberFromTypeAndProps(
case REACT_STRICT_MODE_TYPE:
fiberTag = Mode;
mode |= StrictLegacyMode;
if (enableStrictEffects && (mode & ConcurrentMode) !== NoMode) {
if ((mode & ConcurrentMode) !== NoMode) {
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Since enableStrictEffects used to be set to __DEV__, does this mean we flip this flag in prod more often (here and in other places where there's no __DEV__ check). Does this matter? It seems good for consistency to always set StrictLegacyMode together with StrictEffectsMode but I want to make sure there's no accidental assumptions about which flags are DEV-only.

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I don't think it matters. StrictMode itself has a check to see if __DEV__ is true or not. So even if this flag gets flipped more often than before, it will not cause StrictMode to be triggered in prod.
I'm trying to reduce complexity around StrictMode, it seems unnecessary to have several flags controlling it, we want to behaviour to be consistent.

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What's the plan for RN OSS?

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The plan for RN OSS, is to resolve last StrictMode violation in React Native's core components and then encourage people to start using it.
What was your strategy with StrictMode on the web? How did you encourage people to use it and how did you explain its benefits?

@sammy-SC sammy-SC merged commit 9872928 into main Oct 19, 2022
@sammy-SC sammy-SC deleted the remove-feature-flag-enableStrictEffects branch October 19, 2022 09:57
facebook-github-bot pushed a commit to facebook/react-native that referenced this pull request Nov 1, 2022
Summary:
This sync includes the following changes:
- **[ab075a232](facebook/react@ab075a232 )**: Do not unmount layout effects on initial Offscreen mount ([#25592](facebook/react#25592)) //<Samuel Susla>//
- **[765805bf8](facebook/react@765805bf8 )**: Fix type check for null ([#25595](facebook/react#25595)) //<Sebastian Markbåge>//
- **[2ac77aab9](facebook/react@2ac77aab9 )**: Clean up vestige of useOpaqueIdentifier ([#25587](facebook/react#25587)) //<Andrew Clark>//
- **[bdd3d0807](facebook/react@bdd3d0807 )**: Extract logic for detecting bad fallback to helper //<Andrew Clark>//
- **[952dfff3f](facebook/react@952dfff3f )**: Split suspended work loop logic into separate functions //<Andrew Clark>//
- **[d2c0ab10d](facebook/react@d2c0ab10d )**: In work loop, add enum of reasons for suspending //<Andrew Clark>//
- **[5450dd409](facebook/react@5450dd409 )**: Strict Mode: Reuse memoized result from first pass ([#25583](facebook/react#25583)) //<Andrew Clark>//
- **[d2a0176a1](facebook/react@d2a0176a1 )**: Detect and warn if use(promise) is wrapped with try/catch block ([#25543](facebook/react#25543)) //<Andrew Clark>//
- **[cf3932be5](facebook/react@cf3932be5 )**: Remove old react-fetch, react-fs and react-pg libraries ([#25577](facebook/react#25577)) //<Sebastian Markbåge>//
- **[28a574ea8](facebook/react@28a574ea8 )**: Try assigning fetch to globalThis if global assignment fails ([#25571](facebook/react#25571)) //<Sebastian Markbåge>//
- **[09def5990](facebook/react@09def5990 )**: [Float] handle noscript context for Resources ([#25559](facebook/react#25559)) //<Josh Story>//
- **[17204056d](facebook/react@17204056d )**: [Float] fix coordination of resource identity and hydration ([#25569](facebook/react#25569)) //<Josh Story>//
- **[d925a8d0b](facebook/react@d925a8d0b )**: Flight client error stack ([#25560](facebook/react#25560)) //<Josh Story>//
- **[996b00b78](facebook/react@996b00b78 )**: [Tiny] Fixed incorrect import in `react-server-dom-webpack` ([#25554](facebook/react#25554)) //<Leo Lamprecht>//
- **[e7c5af45c](facebook/react@e7c5af45c )**: Update cache() and use() to the canary aka next channel ([#25502](facebook/react#25502)) //<Sebastian Markbåge>//
- **[fa77f52e7](facebook/react@fa77f52e7 )**: Unify promise switch statements //<Andrew Clark>//
- **[7572e4931](facebook/react@7572e4931 )**: Track thenable state in work loop //<Andrew Clark>//
- **[7fc3eefd8](facebook/react@7fc3eefd8 )**: Revert yieldy behavior for non-use Suspense (in Flight, too) //<Andrew Clark>//
- **[61f9b5e97](facebook/react@61f9b5e97 )**: [Float] support <base> as Resource ([#25546](facebook/react#25546)) //<Josh Story>//
- **[1d3fc9c9c](facebook/react@1d3fc9c9c )**: Bug fix when resolving cache ([#25545](facebook/react#25545)) //<Sebastian Markbåge>//
- **[cce18e350](facebook/react@cce18e350 )**: [Flight] Use AsyncLocalStorage to extend the scope of the cache to micro tasks ([#25542](facebook/react#25542)) //<Sebastian Markbåge>//
- **[caa84c8da](facebook/react@caa84c8da )**: Revert fetch instrumentation to only RSC ([#25540](facebook/react#25540)) //<Sebastian Markbåge>//
- **[0c11baa6a](facebook/react@0c11baa6a )**: add warnings for non-resources rendered outside body or head ([#25532](facebook/react#25532)) //<Josh Story>//
- **[9236abdb5](facebook/react@9236abdb5 )**: when float is enabled only push title and script as a single unit ([#25536](facebook/react#25536)) //<Josh Story>//
- **[dd5c20825](facebook/react@dd5c20825 )**: Revert yieldy behavior for non-use Suspense ([#25537](facebook/react#25537)) //<Andrew Clark>//
- **[934177598](facebook/react@934177598 )**: fix transposed escape functions ([#25534](facebook/react#25534)) //<Josh Story>//
- **[d1ced9fd5](facebook/react@d1ced9fd5 )**: [Float] support all links as Resources ([#25515](facebook/react#25515)) //<Josh Story>//
- **[973b90bdf](facebook/react@973b90bdf )**: [Float] support meta tags as Resources ([#25514](facebook/react#25514)) //<Josh Story>//
- **[79c582981](facebook/react@79c582981 )**: Let ReactDOM initialize in RSC ([#25503](facebook/react#25503)) //<Sebastian Markbåge>//
- **[1f7a2f577](facebook/react@1f7a2f577 )**: [Float] support title tags as Resources ([#25508](facebook/react#25508)) //<Josh Story>//
- **[c63580787](facebook/react@c63580787 )**: Support `use` in `act` testing API ([#25523](facebook/react#25523)) //<Andrew Clark>//
- **[65e32e58b](facebook/react@65e32e58b )**: Add fetch Instrumentation to Dedupe Fetches ([#25516](facebook/react#25516)) //<Sebastian Markbåge>//
- **[9336e29d9](facebook/react@9336e29d9 )**: [useEvent] Lint for presence of useEvent functions in dependency lists ([#25512](facebook/react#25512)) //<lauren>//
- **[3cc792bfb](facebook/react@3cc792bfb )**: [useEvent] Non-stable function identity ([#25473](facebook/react#25473)) //<lauren>//
- **[987292815](facebook/react@987292815 )**: Remove feature flag enableStrictEffects ([#25387](facebook/react#25387)) //<Samuel Susla>//
- **[8e2bde6f2](facebook/react@8e2bde6f2 )**: Add cache() API ([#25506](facebook/react#25506)) //<Sebastian Markbåge>//
- **[9cdf8a99e](facebook/react@9cdf8a99e )**: [Codemod] Update copyright header to Meta ([#25315](facebook/react#25315)) //<Andrew Clark>//
- **[e54015e26](facebook/react@e54015e26 )**: Refactor: fill in the flow missing type ([#25496](facebook/react#25496)) //<c0dedance>//
- **[3b1fd5767](facebook/react@3b1fd5767 )**: refactor: Flow: typing of Scheduler ([#25485](facebook/react#25485)) //<bubucuo>//
- **[14072ce64](facebook/react@14072ce64 )**: Add detach to Offscreen component ([#25265](facebook/react#25265)) //<Samuel Susla>//
- **[3bb71dfd4](facebook/react@3bb71dfd4 )**: Rename react-server-dom-webpack entry points to /client and /server ([#25504](facebook/react#25504)) //<Sebastian Markbåge>//
- **[71f2c8cf1](facebook/react@71f2c8cf1 )**: move resource acquisition to mutation phase ([#25500](facebook/react#25500)) //<Josh Story>//
- **[500bea532](facebook/react@500bea532 )**: Add option to load Fizz runtime from external file ([#25499](facebook/react#25499)) //<Andrew Clark>//
- **[4494f2a86](facebook/react@4494f2a86 )**: [Float] add support for scripts and other enhancements ([#25480](facebook/react#25480)) //<Josh Story>//
- **[9ecf84ed7](facebook/react@9ecf84ed7 )**: Bugfix: Suspending in shell during discrete update ([#25495](facebook/react#25495)) //<Andrew Clark>//

Changelog:
[General][Changed] - React Native sync for revisions 54f297a...ab075a2

jest_e2e[run_all_tests]

Reviewed By: kassens

Differential Revision: D40897093

fbshipit-source-id: 6a040315834dea5c0ab994ea94d91f5605b9d6b0
OlimpiaZurek pushed a commit to OlimpiaZurek/react-native that referenced this pull request May 22, 2023
Summary:
This sync includes the following changes:
- **[ab075a232](facebook/react@ab075a232 )**: Do not unmount layout effects on initial Offscreen mount ([facebook#25592](facebook/react#25592)) //<Samuel Susla>//
- **[765805bf8](facebook/react@765805bf8 )**: Fix type check for null ([facebook#25595](facebook/react#25595)) //<Sebastian Markbåge>//
- **[2ac77aab9](facebook/react@2ac77aab9 )**: Clean up vestige of useOpaqueIdentifier ([facebook#25587](facebook/react#25587)) //<Andrew Clark>//
- **[bdd3d0807](facebook/react@bdd3d0807 )**: Extract logic for detecting bad fallback to helper //<Andrew Clark>//
- **[952dfff3f](facebook/react@952dfff3f )**: Split suspended work loop logic into separate functions //<Andrew Clark>//
- **[d2c0ab10d](facebook/react@d2c0ab10d )**: In work loop, add enum of reasons for suspending //<Andrew Clark>//
- **[5450dd409](facebook/react@5450dd409 )**: Strict Mode: Reuse memoized result from first pass ([facebook#25583](facebook/react#25583)) //<Andrew Clark>//
- **[d2a0176a1](facebook/react@d2a0176a1 )**: Detect and warn if use(promise) is wrapped with try/catch block ([facebook#25543](facebook/react#25543)) //<Andrew Clark>//
- **[cf3932be5](facebook/react@cf3932be5 )**: Remove old react-fetch, react-fs and react-pg libraries ([facebook#25577](facebook/react#25577)) //<Sebastian Markbåge>//
- **[28a574ea8](facebook/react@28a574ea8 )**: Try assigning fetch to globalThis if global assignment fails ([facebook#25571](facebook/react#25571)) //<Sebastian Markbåge>//
- **[09def5990](facebook/react@09def5990 )**: [Float] handle noscript context for Resources ([facebook#25559](facebook/react#25559)) //<Josh Story>//
- **[17204056d](facebook/react@17204056d )**: [Float] fix coordination of resource identity and hydration ([facebook#25569](facebook/react#25569)) //<Josh Story>//
- **[d925a8d0b](facebook/react@d925a8d0b )**: Flight client error stack ([facebook#25560](facebook/react#25560)) //<Josh Story>//
- **[996b00b78](facebook/react@996b00b78 )**: [Tiny] Fixed incorrect import in `react-server-dom-webpack` ([facebook#25554](facebook/react#25554)) //<Leo Lamprecht>//
- **[e7c5af45c](facebook/react@e7c5af45c )**: Update cache() and use() to the canary aka next channel ([facebook#25502](facebook/react#25502)) //<Sebastian Markbåge>//
- **[fa77f52e7](facebook/react@fa77f52e7 )**: Unify promise switch statements //<Andrew Clark>//
- **[7572e4931](facebook/react@7572e4931 )**: Track thenable state in work loop //<Andrew Clark>//
- **[7fc3eefd8](facebook/react@7fc3eefd8 )**: Revert yieldy behavior for non-use Suspense (in Flight, too) //<Andrew Clark>//
- **[61f9b5e97](facebook/react@61f9b5e97 )**: [Float] support <base> as Resource ([facebook#25546](facebook/react#25546)) //<Josh Story>//
- **[1d3fc9c9c](facebook/react@1d3fc9c9c )**: Bug fix when resolving cache ([facebook#25545](facebook/react#25545)) //<Sebastian Markbåge>//
- **[cce18e350](facebook/react@cce18e350 )**: [Flight] Use AsyncLocalStorage to extend the scope of the cache to micro tasks ([facebook#25542](facebook/react#25542)) //<Sebastian Markbåge>//
- **[caa84c8da](facebook/react@caa84c8da )**: Revert fetch instrumentation to only RSC ([facebook#25540](facebook/react#25540)) //<Sebastian Markbåge>//
- **[0c11baa6a](facebook/react@0c11baa6a )**: add warnings for non-resources rendered outside body or head ([facebook#25532](facebook/react#25532)) //<Josh Story>//
- **[9236abdb5](facebook/react@9236abdb5 )**: when float is enabled only push title and script as a single unit ([facebook#25536](facebook/react#25536)) //<Josh Story>//
- **[dd5c20825](facebook/react@dd5c20825 )**: Revert yieldy behavior for non-use Suspense ([facebook#25537](facebook/react#25537)) //<Andrew Clark>//
- **[934177598](facebook/react@934177598 )**: fix transposed escape functions ([facebook#25534](facebook/react#25534)) //<Josh Story>//
- **[d1ced9fd5](facebook/react@d1ced9fd5 )**: [Float] support all links as Resources ([facebook#25515](facebook/react#25515)) //<Josh Story>//
- **[973b90bdf](facebook/react@973b90bdf )**: [Float] support meta tags as Resources ([facebook#25514](facebook/react#25514)) //<Josh Story>//
- **[79c582981](facebook/react@79c582981 )**: Let ReactDOM initialize in RSC ([facebook#25503](facebook/react#25503)) //<Sebastian Markbåge>//
- **[1f7a2f577](facebook/react@1f7a2f577 )**: [Float] support title tags as Resources ([facebook#25508](facebook/react#25508)) //<Josh Story>//
- **[c63580787](facebook/react@c63580787 )**: Support `use` in `act` testing API ([facebook#25523](facebook/react#25523)) //<Andrew Clark>//
- **[65e32e58b](facebook/react@65e32e58b )**: Add fetch Instrumentation to Dedupe Fetches ([facebook#25516](facebook/react#25516)) //<Sebastian Markbåge>//
- **[9336e29d9](facebook/react@9336e29d9 )**: [useEvent] Lint for presence of useEvent functions in dependency lists ([facebook#25512](facebook/react#25512)) //<lauren>//
- **[3cc792bfb](facebook/react@3cc792bfb )**: [useEvent] Non-stable function identity ([facebook#25473](facebook/react#25473)) //<lauren>//
- **[987292815](facebook/react@987292815 )**: Remove feature flag enableStrictEffects ([facebook#25387](facebook/react#25387)) //<Samuel Susla>//
- **[8e2bde6f2](facebook/react@8e2bde6f2 )**: Add cache() API ([facebook#25506](facebook/react#25506)) //<Sebastian Markbåge>//
- **[9cdf8a99e](facebook/react@9cdf8a99e )**: [Codemod] Update copyright header to Meta ([facebook#25315](facebook/react#25315)) //<Andrew Clark>//
- **[e54015e26](facebook/react@e54015e26 )**: Refactor: fill in the flow missing type ([facebook#25496](facebook/react#25496)) //<c0dedance>//
- **[3b1fd5767](facebook/react@3b1fd5767 )**: refactor: Flow: typing of Scheduler ([facebook#25485](facebook/react#25485)) //<bubucuo>//
- **[14072ce64](facebook/react@14072ce64 )**: Add detach to Offscreen component ([facebook#25265](facebook/react#25265)) //<Samuel Susla>//
- **[3bb71dfd4](facebook/react@3bb71dfd4 )**: Rename react-server-dom-webpack entry points to /client and /server ([facebook#25504](facebook/react#25504)) //<Sebastian Markbåge>//
- **[71f2c8cf1](facebook/react@71f2c8cf1 )**: move resource acquisition to mutation phase ([facebook#25500](facebook/react#25500)) //<Josh Story>//
- **[500bea532](facebook/react@500bea532 )**: Add option to load Fizz runtime from external file ([facebook#25499](facebook/react#25499)) //<Andrew Clark>//
- **[4494f2a86](facebook/react@4494f2a86 )**: [Float] add support for scripts and other enhancements ([facebook#25480](facebook/react#25480)) //<Josh Story>//
- **[9ecf84ed7](facebook/react@9ecf84ed7 )**: Bugfix: Suspending in shell during discrete update ([facebook#25495](facebook/react#25495)) //<Andrew Clark>//

Changelog:
[General][Changed] - React Native sync for revisions 54f297a...ab075a2

jest_e2e[run_all_tests]

Reviewed By: kassens

Differential Revision: D40897093

fbshipit-source-id: 6a040315834dea5c0ab994ea94d91f5605b9d6b0
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