Unit and component testing for the frontend with Vitest and Testing Library. Keywords: Vitest, @testing-library/svelte, component tests, vi.mock, render, screen, fireEvent, userEvent, test.ts, spec.ts, describe, it, AAA pattern
Install
npx skills add exceptionless/Exceptionless --skill frontend-testingnpx skills add exceptionless/Exceptionless --skill frontend-testing -a claude-code -gnpx skills add exceptionless/Exceptionless --skill frontend-testing -a codex -ggemini skills install https://github.com/exceptionless/Exceptionless.git --path .github/skills/frontend-testinggh skill install exceptionless/Exceptionless frontend-testinggit clone --depth 1 https://github.com/exceptionless/Exceptionless /tmp/exceptionless__Exceptionless
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/exceptionless__Exceptionless/.github/skills/frontend-testing ~/.claude/skills/frontend-testing # Claude Code
cp -R /tmp/exceptionless__Exceptionless/.github/skills/frontend-testing ~/.agents/skills/frontend-testing # Codex, Cursor, Gemini CLI, Copilot, OpenCode