Currently the resulting instance has infinite "any" properties

[int0h]

I mentioned this issue in #7

import { trait, derive, derived } from "@traits-ts/core"

const HasA = trait(B => class extends B {
    a = 'a';
});

const HasB = trait(B => class extends B {
    b = 'b';
});

const Greeting = trait([HasA, HasB], B => class extends B {
    hi() {
        console.log(this.a); // a: string // Good
        console.log(this.b); // b: any    // Not good
        console.log(this.c); // c: any    // Really bad
    }
});

It looks like there is a bug in typing logic / TS compiler itself that allows accessing anything on the instance:

instance.absolutely.anything // :any 

Which is very dangerous.

There are still types for defined properties though:

this.a // string
this.b // number

I'm creating a separate issue as it seems to be quite critical type safety issue and more dangerous than the other one.