SvelteKit 3 Reaches Release Candidate Stage with Node.js 18.13 Minimum Requirement

The Svelte project team has released the Release Candidate for SvelteKit 3, focusing on refactoring the codebase and building a robust foundation for future features. If no major bugs are discovered during this RC phase, this version will transition directly to the official stable release without any additional breaking changes.
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| Aspect | Before / Alternative | After / This |
|---|---|---|
| Node.js Support | Versions older than 18.13.0 allowed | Node.js 18.13.0 or higher strictly required |
| Package Manager | Support for npm versions older than v9 | npm v9 or higher required |
| Internal APIs | Legacy interfaces kept active | Deprecated interfaces removed |
| Migration Method | Manual configuration updates | Automated transition using the updated sv migrate command |
Action Checklist
- Verify the local and production Node.js runtimes are at version 18.13.0 or higher Ensure your CI/CD pipelines are also updated
- Upgrade npm to version 9 or higher Check alternative package managers if not using npm directly
- Run the sv migrate command in your project directory This will automatically update dependencies and replace deprecated code where possible
- Review the generated TODO lists and runtime warning diagnostics Address warnings that cannot be automatically resolved by the migration script
- Consult the dedicated Svelte preview documentation site for unresolved breaking changes The transition guide is maintained at next.svelte.dev
Source: Svelte Blog
This page summarizes the original source. Check the source for full details.



