Migrate from Vitest 2.x/3.x to 4.x with pool options, coverage config, workspace to projects, and browser mode updates. Use when upgrading Vitest versions or encountering deprecated patterns.
Install
npx skills add djankies/claude-configs --skill migrating-to-vitest-4npx skills add djankies/claude-configs --skill migrating-to-vitest-4 -a claude-code -gnpx skills add djankies/claude-configs --skill migrating-to-vitest-4 -a codex -ggemini skills install https://github.com/djankies/claude-configs.git --path vitest-4/skills/migrating-to-vitest-4gh skill install djankies/claude-configs migrating-to-vitest-4git clone --depth 1 https://github.com/djankies/claude-configs /tmp/djankies__claude-configs
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/djankies__claude-configs/vitest-4/skills/migrating-to-vitest-4 ~/.claude/skills/migrating-to-vitest-4 # Claude Code
cp -R /tmp/djankies__claude-configs/vitest-4/skills/migrating-to-vitest-4 ~/.agents/skills/migrating-to-vitest-4 # Codex, Cursor, Gemini CLI, Copilot, OpenCode