Ooh next uses webpack right? Might be some free speed. Thanks.

Yes but there are some difficulties you may run into when replacing the default loader nextjs uses, because it includes some custom babel plugins that get blown away when you replace the loader with esbuild-loader.

Thanks for the heads up.

We recently switched from ts-loader to esbuild-loader. It was super easy and it halved our build time with zero complications. Highly recommend.