rollup-plugin-istanbul seamlessly integrates Istanbul.js code coverage into your Rollup builds. This plugin instruments your source code during bundling, allowing you to track code coverage metrics directly within your testing workflow. It generates comprehensive reports in various formats (e.g., HTML, lcov, text) providing valuable insights into the effectiveness of your tests and identifying areas of your codebase that lack sufficient coverage. Streamline your testing and improve the quality of your JavaScript projects with ease.