What problem does it solve? Upgrading an Expo SDK involves breaking changes, deprecated packages, native rebuilds, and dependency conflicts that are easy to miss. This Skill provides a structured, step-by-step process for upgrading Expo SDK versions safely, including diagnostics, cache clearing, prebuild decisions, and migration guides for major API changes. ## Core Features & Use Cases - Guided Upgrade Workflow: Runs npx expo install --fix, expo-doctor diagnostics, cache clearing, and prebuild steps in the correct order, with CNG vs bare workflow detection. - Migration References: Detailed guides for React 19 changes, React Compiler, New Architecture, native tabs, expo-av to expo-audio/expo-video, and react-navigation to expo-router. - Housekeeping & Deprecation Handling: Maps deprecated packages to replacements, reviews install exclusions, patches, Metro/PostCSS config, and Hermes V1 memory regression guidance. - Use Case: When upgrading a project from SDK 54 to SDK 57, use this Skill to update dependencies, migrate expo-av audio code to expo-audio hooks, enable React Compiler, and verify the app with expo-doctor. ## Quick Start Use the expo-upgrade skill to upgrade this project to the latest Expo SDK and fix any dependency issues.