JS/TS Coverage Index

Public test-coverage signals for popular JavaScript and TypeScript repos, read from Codecov, Coveralls, and SonarCloud. Coverage is a map, not a grade: a low number is not a verdict on a great library, and many excellent repos publish no public signal at all. Click any repo to see its page or run a free sandbox check.

Below the 80% target (5)

Closest to 80% first. These have the most fixable gaps.

honojs/hono79%Codecov unjs/h378%Codecov unjs/ofetch57%Codecov sveltejs/svelte50%Codecov tanstack/query37%Codecov

At or above 80% (7)

unjs/defu100%Codecov fastify/fastify100%Coveralls expressjs/express100%Coveralls date-fns/date-fns97%Coveralls trpc/trpc93%Codecov nestjs/nest90%Coveralls vuejs/pinia88%Codecov

No public coverage signal (10)

No readable Codecov, Coveralls, or SonarCloud badge. That is not a low score, just no public number. Run the free check to measure the real one in a sandbox.

colinhacks/zodno public signal · check it drizzle-team/drizzle-ormno public signal · check it tanstack/tableno public signal · check it tanstack/routerno public signal · check it pmndrs/zustandno public signal · check it vercel/swrno public signal · check it withastro/astrono public signal · check it remix-run/react-routerno public signal · check it sindresorhus/kyno public signal · check it vitejs/viteno public signal · check it

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Curious how a repo you rely on stacks up? Drop it in. Coverage is a map, not a grade.

Showing 12 measured of 22 tracked repos. Numbers come from public providers and refresh periodically. Nothing here is a quality judgement.