Not everyone has a greenfield project the fact that it integrates with JavaScript seamlessly and generates readable JavaScript is an advantage. They go as far a

Not everyone has a greenfield project the fact that it integrates with JavaScript seamlessly and generates readable JavaScript is an advantage. They go as far as providing a plug-in for the standard JavaScript build flow, so you can basically start by just converting one file. On the other hand ocaml’s package manager (opam) and build system (jbuilder) are much better than elms equivalent and nothing is stopping you from using those for a greenfield project.