Karma-rollup-preprocessor is a Karma plugin that preprocesses JavaScript files using Rollup.js. This allows for efficient bundling and modern JavaScript syntax support (ES6, ES modules) within your Karma testing environment. It's beneficial for projects using Rollup for production and wanting consistent build configurations across development and testing. The preprocessor leverages Rollup's powerful features like tree-shaking and code splitting to optimize test code before it runs in the browser. Ideal for achieving better performance and maintainability in your Karma test suite.
Karma-rollup-preprocessor downloads show a generally increasing trend from March 2024 to May 2025, peaking in June 2025. July and August 2025 saw a decrease, while September 2025 (partial data) is significantly lower, not representing a full month.
The karma-rollup-preprocessor package saw frequent releases from 2015 to 2021, with peaks in 2016 (6 releases), 2017 (8 releases), and 2018 (7 releases). The release frequency significantly decreased after March 2021, with only one release in February 2022 and no releases since then. The package has been inactive for over 2 years.
