Here is a leaflet example that a colleague recently implemented: Added World Map to Academic Excellence Page by shreyaswikriti · Pull Request #513 · ocaml/v3.ocaml.org · GitHub</ti
I am posting it here for visibility, in case someone is looking for help with leaflet in the future.
Thanks to ryyppy for providing an example of using nextjs dynamic imports in the rescript-lang.org codebase.