karma-esbuild-next

An esbuild preprocessor for the Karma test runner, forked from karma-esbuild. It leverages esbuild for fast compilation and readable output, supporting custom esbuild configurations, plugin integration, and single-bundle mode to merge test files into one bundle. Current version 1.1.0 requires esbuild >=0.17.0. Compared to alternatives like karma-webpack or karma-rollup, it offers significantly faster build times due to esbuild's speed, while maintaining compatibility with Karma's standard preprocessor interface.