React Dependency Compatibility Matrix Minimum versions required for React 18.3.1 and React 19 compatibility. Use this skill whenever checking whether a dependency supports a target React version, resolving peer dependency conflicts, deciding whether to upgrade or use , or assessing the risk of a v5 to v6 migration. Review this matrix before running during a React upgrade and before accepting an npm dependency conflict resolution, especially where concurrent mode compatibility may be affected. Core Upgrade Targets | Package | React 17 (current) | React 18.3.1 (min) | React 19 (min) | Notes | |…