fix: modernize class inheritance

[jimmywarting]

Wanted to modernize it a bit

[wraithgar]

This is much more readable! Unfortunately tests don't pass and the tests here are quite fiddly. If you can get the entire refactor working without changing tests it makes it easier to land larger refactors like this. If you can't, we may have to break this up into smaller changes that change both the code and the tests. It's easier to reason about changes to both with smaller iterative changes.

[jimmywarting]

yea... trying to figure out what's wrong.
the problem with smaller iterative changes where that some classes extends others and dose something like XYZ.call(this, ...args) and that dose not quite work so well when you received a XYZ can not be constructed without using new keyword.

[jimmywarting]

I think it where just that the test threshold did get lower cuz it was using less code. so the uncovered lines covered more %
so i added a simple debug test to one of the test cases

[wraithgar]

I have no idea why Pull Request / Lint Commits is failing but that's our problem to fix, not yours. The PR title itself looks fine to me?

[wraithgar]

Cheers @jimmywarting