Setting up ES6 modules in a project

Hi,
I’ve been working on an AR project, and I’ve come a long way since I started. I have my project set up in a more outdated way, with all the non-ES6 modules, and I consider it to be a bit disorganised. I was hoping if someone could help me out and share a good sample AR Three js project so that I can compare the setup.

Currently, I’ve got my models rendering in consistently after solving an emission issue, which stopped my models from appearing black. However the texture and material on my models are not shown properly due to lighting not having any effect. I researched this and found that I should attempt Environment Lighting using a .hdr map.
To do that I need an RGBELoader imported into my code, however all the modules on my current project are running on an older non-ES6 setup and I cannot find either a non-ES6 version of RGBE Loader or a good AR sample project for me to learn how to setup ES6 modules.
I’ve decided on the latter, and to change my whole project to a newer ES6 module version. I was just hoping someone more experienced than me can point me in the right direction, and ideally I would like a sample AR project directory for a reference point.

Thanks,
AURLab