![]() This is great Thank you and love the work! ❤️ The calls to peformance.now() aren't done unless you're within a part of the tree wrapped with a tag so the CPU impact- minimal either way- would not apply to parts of your app that aren't being profiled. ![]() The memory impact of the additional fiber attributes should be minor, but will always be there if you're loading the profiling build- so only load it if you're using the data. ![]() impact is minor: 4 additional fiber attributes, some additional calls to peformance.now() within profiled subtrees. To enable profiling in production mode, modify Webpack configuration file ( config/) as shown below. Note that your changes would be temporary and will not persist between re-runs of your package manager. Then you can run yarn build or npm run build to get a profiling build. If you only want to profile the application locally in production mode, you can do this by editing node_modules directly.įollow the instructions below, and apply them to node_modules/react-scripts/config/. However, you can also enable profiling temporarily without ejecting. Then you can follow the instructions below and apply these changes to config/ in your app folder. Npm run build -profile Create React App <= v3.1 Enabling profiling permanentlyĪt the moment, the only way to permanently enable production profiling in CRA apps is to eject.
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