Support highlights for React Native apps in dev tools #26060
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tyao1
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Jan 27, 2023
packages/react-devtools-shared/src/backend/views/TraceUpdates/canvas.js
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<!-- 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 debug-test --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? --> This pull request emit the trace update events `drawTraceUpdates` with the trace frame information when the trace update drawer runs outside of web environment. This allows React Devtool running in mobile or other platforms have a chance to render such highlights and provide similar feature on web to provide re-render highlights. This is a feature needed for identifying unnecessary re-renders. ## 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. --> I tested this change with Flipper desktop app running against mobile app, and verified that the event with correct array of frames are passing through properly. DiffTrain build for [758fc7f](758fc7f) [View git log for this commit](https://github.com/facebook/react/commits/758fc7fde10f49912b18496299506cba30d6029b)
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@ryancat What's the best way to consume this change and try it out? Is it just upgrading to react@next or is there more that needs to go into it? Thank you for this change - very excited to try it out (will be super helpful). |
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Summary
This pull request emit the trace update events
drawTraceUpdateswith the trace frame information when the trace update drawer runs outside of web environment. This allows React Devtool running in mobile or other platforms have a chance to render such highlights and provide similar feature on web to provide re-render highlights. This is a feature needed for identifying unnecessary re-renders.How did you test this change?
I tested this change with Flipper desktop app running against mobile app, and verified that the event with correct array of frames are passing through properly.