Priorities and Issues #9
Description
I'd suggest abandoning any efforts at integrating specific front-end stacks (e.g. Angular and React) and just integrate HTML, Javascript, and TypeScript. Fundamentally, anyone using those stacks isn't going to want to figure out how to blend their collection of crap with yours, and would probably like the cleanest and most vanilla landscape possible.
I'm also pretty concerned that it looks like your system essentially runs a web-server locally, which is simple but also a security nightmare since you aren't sandboxing the server so no-one can use this product for anything vaguely serious.
What you need to do at minimum is provide a protocol or virtual URL that maps to the file system privately. Perhaps the simplest way to do this would be via a service worker.