esbuild-extra

A lightweight utility library (0.4.2) that extends esbuild plugins with onTransform, onResolved, load, emitChunk, emitFile, and resolveLocallyFirst features. It is ~6x smaller than @chialab/esbuild-rna and provides TypeScript types. Key differentiators: cooperative onTransform with sourcemap support, namespace-aware hook ordering, and minimal footprint. Suitable for plugin authors wanting extra build hooks without heavy dependencies. Compatible with esbuild >=0.15. Version 0.4 released 2023.