karma-rollup

Karma preprocessor that bundles ES2015 modules using Rollup for testing. Version 1.0.1 is the latest stable release (as of 2023+). Designed for use with Karma test runner, it integrates Rollup as a preprocessor to transpile and bundle ES module imports/exports into a single file per test file. Supports Rollup plugins (e.g., Bublé, Babel), custom preprocessors, watch mode with caching, and sourcemaps. Differentiators: lightweight compared to Webpack-based preprocessors, leverages Rollup's tree-shaking and fast bundling. Requires Rollup >=1.0.0 as a peer dependency.