Document or resolve SWC 'classic' runtime vs 'automatic' for React 19
Nobody has claimed this yet.
Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 35/100
- Issue type
- Refactor
- Clarity
- Mostly clear
- Activity status
- Stale
- Tech stack
- javascript, react, webpack
- Domain
- build-system, full-stack, testing
Research direction
Start with config/swc.config.js:8-18 and the React version in package.json, then investigate React on Rails SSR compatibility for the classic and automatic runtimes. Add SSR integration coverage for both runtimes if feasible; done means either switching to automatic after successful validation or documenting the confirmed limitation with supporting links.
Written by the indexing model from the issue text.
Description
Context
In config/swc.config.js:8-18, we use 'classic' runtime with a TODO:
// TODO: Consider switching to 'automatic' runtime when fully on React 19+
runtime: 'classic',
Questions
Since the project is already on React 19 (package.json), what's blocking the move to automatic runtime?
- Is this a React on Rails SSR compatibility issue?
- Should there be integration tests to validate this works with SSR?
Suggested Actions
- If this is a known React on Rails limitation, link to an issue or docs
- Add integration tests for both runtimes with SSR if feasible
- Test automatic runtime and switch if compatible
- Dominant language
- JavaScript
- Stars
- 1.7k
- Forks
- 370
- Avg merge
- 2d 15h
- Merged PRs (30d)
- 6
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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