
Coveralls
6.9#4 in test coverage toolsFrom $10 a monthFree planWebAPILinuxSelf-hosted
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| Fact | Coveralls | Istanbul |
|---|---|---|
| Integrations | Coveralls says it works with any CI service and offers over 30 community-created integrations plus a GitHub Action and CircleCI Orb. | Listed integrations are nyc, c8, Jest and node-tap; c8 uses Istanbul reports to display V8 coverage. |
| Purpose | Coveralls analyzes test coverage to show which parts of code are not covered by tests. | Istanbul instruments JavaScript code with line counters to track how well unit tests exercise a codebase. |
| Support | The pricing page offers a $200/month Support add-on with premium support, priority response, and live chat. | The contributing page directs users to report bugs by opening an issue in the appropriate GitHub repository. |
No prices published.
Coveralls suits development teams that want coverage details by file and line, historical trends, and pull-request checks. Its free open-source option may suit maintainers of public projects; private repositories have paid plans starting at $10/mo.
Istanbul suits JavaScript and TypeScript projects that need coverage across several measurement types and report formats. It fits teams using frameworks such as Jest, mocha, tap, or AVA.