Default HTML formatter for SimpleCov

Note: To learn more about SimpleCov, check out the main repo at https://github.com/simplecov-ruby/simplecov

Generates an HTML report of your SimpleCov Ruby code coverage results with interactive sorting, filtering, and syntax-highlighted source views.

Setup

bin/setup

This installs both Ruby and Node dependencies. Node dependencies (esbuild, TypeScript, highlight.js) are only needed for development.

Development

Run the test suite:

bundle exec rake

If you modify the TypeScript or CSS assets, recompile them:

bundle exec rake assets:compile

Type-check the TypeScript:

bun run typecheck

Copyright

Copyright (c) 2010-2026 Christoph Olszowka and Erik Berlin. See LICENSE for details.