Deprecated dependencies in client

[tgranqvist]

When cloning this template and running npm install, I get the following warnings:

npm warn deprecated [email protected]: This module is not supported, and leaks memory. Do not use it. Check out lru-cache if you want good and tested way to coalesce async requests by a key value, which is much more comprehensive and powerful. npm warn deprecated [email protected]: Glob versions prior to v9 are no longer supported npm warn deprecated [email protected]: Use your platform's native DOMException instead

I opted to use ES6 modules in the frontend, haven't checked how it behaves if not using this alternative.