yaup

A minimal, unopinionated CLI wrapper around esbuild for building dual CJS/ESM packages with TypeScript declaration files. Current stable version is 1.8.0, maintained by egoist. It offers a simple config file (yaup.config.ts) with defineConfig, supporting multiple output formats (esm, cjs, dts). Unlike opinionated alternatives like tsup or rollup, yaup stays close to raw esbuild, giving users flexible configuration with minimal API surface. Release cadence is irregular; the author is not accepting new features unless critical.