Codecov

Coverage tracking per PR — uploads LCOV from Vitest, free for public repos

Codecov

Role

Tracks per-PR test coverage. The CI workflow runs Vitest with the LCOV reporter, then codecov/codecov-action@v5 uploads the report. Codecov posts a comment on the PR showing coverage delta vs main and adds a status check that fails if coverage drops below the configured floor.

Free tier

Free forever for public repos:

• Unlimited uploads
• Unlimited reports
• Unlimited committers / contributors
• All languages
• PR comments + status checks
• Coverage badges
• Branch + flag-based reporting

Card / subscription required?

NO for public repos. Sign-in via GitHub OAuth; no payment method requested. The family’s public-repos-only stance keeps every repo eligible.

Alternatives

• Sonarcloud — also tracks coverage, but the rendering is part of the SAST report and the dashboard is busier for “what’s the coverage delta on this PR” specifically.
• Coveralls — similar, smaller community, slower PR comments.
• Self-hosted (Coverage Gutters in editor only) — no PR feedback.

Swap cost

Low. Replace codecov/codecov-action@v5 with the alternative’s action; LCOV format is universal. Coverage thresholds live in codecov.yml at repo root.

Why this is our pick

Five-tool code-quality stack (decision) needs vendor-redundant signals: Sonarcloud renders coverage as part of its quality gate, Codecov renders it as the dedicated PR artefact. Codecov’s PR comment is the most-read signal during reviews and the family ships it on every public repo without paying anything.

Cross-refs

• Code quality services index
• Five-tool code quality decision
• Vitest — emits LCOV
• Sonarcloud — also tracks coverage
• No card-on-file rule

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