Deprecation archive
React deprecations & breaking changes
1 tracked change, dated and sourced to React's own changelog. Want to know which of these touch your stack? Paste your package.json →
- Source ↗BreakingAction required
React 19 removes defaultProps for functions, string refs, legacy context
React 19 removed defaultProps on function components (use default parameters), string refs, legacy context, and the react-dom render() / hydrate() APIs. Older code paths break on upgrade.
published 2024-12-05 · affects ≥ 19.0.0
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