The **esbuild‑plugin‑postcss** package adds PostCSS processing to the fast JavaScript bundler esbuild. By configuring the plugin with any PostCSS plugins (e.g., autoprefixer), developers can import CSS files directly in their JS entry points and have a bundled, transformed stylesheet generated during the build. It’s aimed at front‑end engineers who use esbuild and want seamless PostCSS support without switching to a heavier toolchain.