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b16b768fbd
Cleans up feature flags that do not have an active experiment and which we don't currently plan to ship, one commit per flag. Notable removals: * Automatic (inferred) effect dependencies / Fire: abandoned due to early feedback. Shipped useEffectEvent which addresses some of the use-cases. * Inline JSX transform (experimented, not a consistent win) * Context selectors (experimented, not a sufficient/consistent win given the benefit the compiler already provides) * Instruction Reordering (will try a different approach) To decide which features to remove, I looked at Meta's internal repos as well as eslint-pugin-react-hooks to see which flags were never overridden anywhere. That gave a longer list of flags, from which I then removed some features that I know are used in OSS.
React Compiler Playground
An interactive playground to demonstrate, test, and have fun with React Compiler.
Setup
# Build React Compiler from source and install Playground dependencies.
$ yarn
# Or similarly
$ npm install
Development
# Start the local development server with
$ yarn dev
# Or
$ npm run dev
# Rerun the following (in a separate terminal window) when React Compiler
# is changed locally to keep Playground in sync.
$ yarn
Testing
# Install playwright browser binaries
$ npx playwright install --with-deps
# Run tests
$ yarn test
Deployment
This project has been deployed using Vercel. Vercel does the exact same thing as we would
locally, by running yarn at the install step in the Playground directory to build
React Compiler from source and symlink it as its dependency.
This means that Playground is automatically deployed on every push and pull requests will reflect
the behaviors of React Compiler of that commit.