Istanbul is a command-line tool and library that helps track code coverage in JavaScript projects. It analyzes which parts of your code have been executed, providing insights into testing effectiveness. This allows developers to identify untested areas, improving code quality and reducing potential bugs. Istanbul supports various coverage metrics like line, branch, and function coverage, and generates detailed reports in formats like HTML, LCOV, and Cobertura, facilitating seamless integration with different CI/CD pipelines.
The npm package istanbul experienced frequent releases between September 2012 and December 2015, with peak activity in 2012 and 2015. Release frequency significantly decreased after 2015, with no new versions published from January 2017 to August 2025. The project appears to be inactive in recent years.
Istanbul package downloads fluctuated throughout 2024, peaking in November. In 2025, downloads remained relatively stable until June, then surged significantly in July. August 2025 shows a sharp decline, but the month isn't complete yet, so the final download count is unknown.