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Stacked on https://github.com/facebook/react/pull/28351, please review only the last commit. Top-level description of the approach: 1. Once user selects an element from the tree, frontend asks backend to return the inspected element, this is where we simulate an error happening in `render` function of the component and then we parse the error stack. As an improvement, we should probably migrate from custom implementation of error stack parser to `error-stack-parser` from npm. 2. When frontend receives the inspected element and this object is being propagated, we create a Promise for symbolicated source, which is then passed down to all components, which are using `source`. 3. These components use `use` hook for this promise and are wrapped in Suspense. Caching: 1. For browser extension, we cache Promises based on requested resource + key + column, also added use of `chrome.devtools.inspectedWindow.getResource` API. 2. For standalone case (RN), we cache based on requested resource url, we cache the content of it.
react-debug-tools
This is an experimental package for debugging React renderers.
Its API is not as stable as that of React, React Native, or React DOM, and does not follow the common versioning scheme.
Use it at your own risk.