Add an option to disable double useEffect in legacy strict mode #26914
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tyao1
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sammy-SC,
rickhanlonii,
acdlite and
noahlemen
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React Core Team
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I don't think this flag is a good idea, but you're going to add it for Meta reasons, it should be an opt-in prop on the StrictMode component so that you can upgrade older surfaces incrementally. |
Makes sense! Will make it a prop on StrictMode instead |
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Comparing: e1ad4aa...659af98 Critical size changesIncludes critical production bundles, as well as any change greater than 2%:
Significant size changesIncludes any change greater than 0.2%: (No significant changes) |
sammy-SC
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Jun 21, 2023
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Jun 21, 2023
… strict mode (#26914) <!-- Thanks for submitting a pull request! We appreciate you spending the time to work on these changes. Please provide enough information so that others can review your pull request. The three fields below are mandatory. Before submitting a pull request, please make sure the following is done: 1. Fork [the repository](https://github.com/facebook/react) and create your branch from `main`. 2. Run `yarn` in the repository root. 3. If you've fixed a bug or added code that should be tested, add tests! 4. Ensure the test suite passes (`yarn test`). Tip: `yarn test --watch TestName` is helpful in development. 5. Run `yarn test --prod` to test in the production environment. It supports the same options as `yarn test`. 6. If you need a debugger, run `yarn test --debug --watch TestName`, open `chrome://inspect`, and press "Inspect". 7. Format your code with [prettier](https://github.com/prettier/prettier) (`yarn prettier`). 8. Make sure your code lints (`yarn lint`). Tip: `yarn linc` to only check changed files. 9. Run the [Flow](https://flowtype.org/) type checks (`yarn flow`). 10. If you haven't already, complete the CLA. Learn more about contributing: https://reactjs.org/docs/how-to-contribute.html --> ## Summary <!-- Explain the **motivation** for making this change. What existing problem does the pull request solve? --> We are upgrading React 17 codebase to React18, and `StrictMode` has been great for surfacing potential production bugs on React18 for class components. There are non-trivial number of test failures caused by double `useEffect` in StrictMode. To prioritize surfacing and fixing issues that will break in production now, we need a flag to turn off double `useEffect` for now in StrictMode temporarily. This is a Meta-only hack for rolling out `createRoot` and we will fast follow to remove it and use full strict mode. ## How did you test this change? <!-- Demonstrate the code is solid. Example: The exact commands you ran and their output, screenshots / videos if the pull request changes the user interface. How exactly did you verify that your PR solves the issue you wanted to solve? If you leave this empty, your PR will very likely be closed. --> jest DiffTrain build for [254cbdb](254cbdb)
tyao1
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Jun 22, 2023
In #26914 I added an extra logic to turn off double useEffect if there is an `Offscreen` tag. But `Suspense` uses `Offscreen` tag internally and that turns off `disableStrictPassiveEffect` for everything.
timneutkens
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Jul 4, 2023
This PR updates the vendored react dependencies using `pnpm sync-react` ### React upstream changes - facebook/react#27028 - facebook/react#27027 - facebook/react#27019 - facebook/react#26954 - facebook/react#26987 - facebook/react#26985 - facebook/react#26933 - facebook/react#26625 - facebook/react#27011 - facebook/react#27008 - facebook/react#26997 - facebook/react#26989 - facebook/react#26955 - facebook/react#26963 - facebook/react#26983 - facebook/react#26914 - facebook/react#26951 - facebook/react#26977 - facebook/react#26958 - facebook/react#26940 - facebook/react#26939 - facebook/react#26887 - facebook/react#26947 - facebook/react#26945 - facebook/react#26942 - facebook/react#26938 - facebook/react#26844 - facebook/react#25510 - facebook/react#26932 - facebook/react#26896 - facebook/react#26913 - facebook/react#26888 - facebook/react#26827 - facebook/react#26889 - facebook/react#26877 - facebook/react#26873 - facebook/react#26880 - facebook/react#26842 - facebook/react#26858 - facebook/react#26754 - facebook/react#26753 - facebook/react#26881 ### Related Closes #49409 (by facebook/react#26977) fix NEXT-1189 Co-authored-by: Shu Ding <g@shud.in>
timneutkens
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Jul 6, 2023
Fixes #49409 ### React upstream changes - facebook/react#27045 - facebook/react#27051 - facebook/react#27032 - facebook/react#27031 - facebook/react#27029 - facebook/react#27028 - facebook/react#27027 - facebook/react#27019 - facebook/react#26954 - facebook/react#26987 - facebook/react#26985 - facebook/react#26933 - facebook/react#26625 - facebook/react#27011 - facebook/react#27008 - facebook/react#26997 - facebook/react#26989 - facebook/react#26955 - facebook/react#26963 - facebook/react#26983 - facebook/react#26914 - facebook/react#26951 - facebook/react#26977 - facebook/react#26958 - facebook/react#26940 - facebook/react#26939 - facebook/react#26887 - facebook/react#26947 - facebook/react#26945 - facebook/react#26942 - facebook/react#26938 - facebook/react#26844 - facebook/react#25510 - facebook/react#26932 - facebook/react#26896 - facebook/react#26913 - facebook/react#26888 - facebook/react#26827 - facebook/react#26889 - facebook/react#26877 - facebook/react#26873 - facebook/react#26880 - facebook/react#26842 - facebook/react#26858 - facebook/react#26754 - facebook/react#26753 - facebook/react#26881 --------- Co-authored-by: Jiachi Liu <inbox@huozhi.im>
shuding
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Jul 8, 2023
This PR updates the vendored react dependencies using `pnpm sync-react` ### React upstream changes - facebook/react#27028 - facebook/react#27027 - facebook/react#27019 - facebook/react#26954 - facebook/react#26987 - facebook/react#26985 - facebook/react#26933 - facebook/react#26625 - facebook/react#27011 - facebook/react#27008 - facebook/react#26997 - facebook/react#26989 - facebook/react#26955 - facebook/react#26963 - facebook/react#26983 - facebook/react#26914 - facebook/react#26951 - facebook/react#26977 - facebook/react#26958 - facebook/react#26940 - facebook/react#26939 - facebook/react#26887 - facebook/react#26947 - facebook/react#26945 - facebook/react#26942 - facebook/react#26938 - facebook/react#26844 - facebook/react#25510 - facebook/react#26932 - facebook/react#26896 - facebook/react#26913 - facebook/react#26888 - facebook/react#26827 - facebook/react#26889 - facebook/react#26877 - facebook/react#26873 - facebook/react#26880 - facebook/react#26842 - facebook/react#26858 - facebook/react#26754 - facebook/react#26753 - facebook/react#26881 ### Related Closes #49409 (by facebook/react#26977) fix NEXT-1189 Co-authored-by: Shu Ding <g@shud.in>
jerrydev0927
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Jan 5, 2024
In facebook/react#26914 I added an extra logic to turn off double useEffect if there is an `Offscreen` tag. But `Suspense` uses `Offscreen` tag internally and that turns off `disableStrictPassiveEffect` for everything. DiffTrain build for [70e998a1064cc1e8e8f9103e0c00d37fbbcf71c1](facebook/react@70e998a)
EdisonVan
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Apr 15, 2024
… strict mode (facebook#26914) <!-- Thanks for submitting a pull request! We appreciate you spending the time to work on these changes. Please provide enough information so that others can review your pull request. The three fields below are mandatory. Before submitting a pull request, please make sure the following is done: 1. Fork [the repository](https://github.com/facebook/react) and create your branch from `main`. 2. Run `yarn` in the repository root. 3. If you've fixed a bug or added code that should be tested, add tests! 4. Ensure the test suite passes (`yarn test`). Tip: `yarn test --watch TestName` is helpful in development. 5. Run `yarn test --prod` to test in the production environment. It supports the same options as `yarn test`. 6. If you need a debugger, run `yarn test --debug --watch TestName`, open `chrome://inspect`, and press "Inspect". 7. Format your code with [prettier](https://github.com/prettier/prettier) (`yarn prettier`). 8. Make sure your code lints (`yarn lint`). Tip: `yarn linc` to only check changed files. 9. Run the [Flow](https://flowtype.org/) type checks (`yarn flow`). 10. If you haven't already, complete the CLA. Learn more about contributing: https://reactjs.org/docs/how-to-contribute.html --> ## Summary <!-- Explain the **motivation** for making this change. What existing problem does the pull request solve? --> We are upgrading React 17 codebase to React18, and `StrictMode` has been great for surfacing potential production bugs on React18 for class components. There are non-trivial number of test failures caused by double `useEffect` in StrictMode. To prioritize surfacing and fixing issues that will break in production now, we need a flag to turn off double `useEffect` for now in StrictMode temporarily. This is a Meta-only hack for rolling out `createRoot` and we will fast follow to remove it and use full strict mode. ## How did you test this change? <!-- Demonstrate the code is solid. Example: The exact commands you ran and their output, screenshots / videos if the pull request changes the user interface. How exactly did you verify that your PR solves the issue you wanted to solve? If you leave this empty, your PR will very likely be closed. --> jest
EdisonVan
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Apr 15, 2024
…6989) In facebook#26914 I added an extra logic to turn off double useEffect if there is an `Offscreen` tag. But `Suspense` uses `Offscreen` tag internally and that turns off `disableStrictPassiveEffect` for everything.
bigfootjon
pushed a commit
that referenced
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Apr 18, 2024
… strict mode (#26914) <!-- Thanks for submitting a pull request! We appreciate you spending the time to work on these changes. Please provide enough information so that others can review your pull request. The three fields below are mandatory. Before submitting a pull request, please make sure the following is done: 1. Fork [the repository](https://github.com/facebook/react) and create your branch from `main`. 2. Run `yarn` in the repository root. 3. If you've fixed a bug or added code that should be tested, add tests! 4. Ensure the test suite passes (`yarn test`). Tip: `yarn test --watch TestName` is helpful in development. 5. Run `yarn test --prod` to test in the production environment. It supports the same options as `yarn test`. 6. If you need a debugger, run `yarn test --debug --watch TestName`, open `chrome://inspect`, and press "Inspect". 7. Format your code with [prettier](https://github.com/prettier/prettier) (`yarn prettier`). 8. Make sure your code lints (`yarn lint`). Tip: `yarn linc` to only check changed files. 9. Run the [Flow](https://flowtype.org/) type checks (`yarn flow`). 10. If you haven't already, complete the CLA. Learn more about contributing: https://reactjs.org/docs/how-to-contribute.html --> ## Summary <!-- Explain the **motivation** for making this change. What existing problem does the pull request solve? --> We are upgrading React 17 codebase to React18, and `StrictMode` has been great for surfacing potential production bugs on React18 for class components. There are non-trivial number of test failures caused by double `useEffect` in StrictMode. To prioritize surfacing and fixing issues that will break in production now, we need a flag to turn off double `useEffect` for now in StrictMode temporarily. This is a Meta-only hack for rolling out `createRoot` and we will fast follow to remove it and use full strict mode. ## How did you test this change? <!-- Demonstrate the code is solid. Example: The exact commands you ran and their output, screenshots / videos if the pull request changes the user interface. How exactly did you verify that your PR solves the issue you wanted to solve? If you leave this empty, your PR will very likely be closed. --> jest DiffTrain build for commit 254cbdb.
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Summary
We are upgrading React 17 codebase to React18, and
StrictModehas been great for surfacing potential production bugs on React18 for class components. There are non-trivial number of test failures caused by doubleuseEffectin StrictMode. To prioritize surfacing and fixing issues that will break in production now, we need a flag to turn off doubleuseEffectfor now in StrictMode temporarily. This is a Meta-only hack for rolling outcreateRootand we will fast follow to remove it and use full strict mode.How did you test this change?
jest