c8 is a command-line tool that provides code coverage reports for Node.js projects using V8's built-in code coverage. It's a fast and reliable alternative to other coverage tools, offering excellent performance by leveraging V8's instrumentation. C8 supports various output formats like text, lcov, and cobertura, making it easily integrable with CI/CD pipelines. Clean terminal output and straightforward configuration enhance the developer experience when striving for higher test coverage.