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81db4eb1d1
Replaced network.onRequestFinished() caching with network.getHAR() so that we can avoid redundantly (pre) caching JavaScript content. In the event that the HAR log doesn't contain a match, we'll fall back to fetching from the Network (and hoping for a cache hit from that layer). I've tested both internally (internal Facebook DEV server) and externally (Code Sandbox) and it seems like this approach results in cache hits, so long as DevTools is opened when the page loads. (Otherwise it falls back to fetch().)
This is the source code for the React DevTools browser extension.
Installation
The easiest way to install this extension is as a browser add-on:
Local development
You can also build and install this extension from source.
Prerequisite steps
DevTools depends on local versions of several NPM packages1 also in this workspace. You'll need to either build or download those packages first.
1 Note that at this time, an experimental build is required because DevTools depends on the createRoot API.
Build from source
To build dependencies from source, run the following command from the root of the repository:
yarn build-for-devtools
Download from CI
To use the latest build from CI, run the following commands starting from the root of the repository:
cd scripts/release
yarn install
./download-experimental-build.js
Build steps
Once the above packages have been built or downloaded, you can build the extension by running:
cd packages/react-devtools-extensions/
yarn build:chrome # => packages/react-devtools-extensions/chrome/build
yarn run test:chrome # Test Chrome extension
yarn build:firefox # => packages/react-devtools-extensions/firefox/build
yarn run test:firefox # Test Firefox extension