It continues to sadden me that the implicit this injection happens only on direct invocation -

    let res = obj.method(arg);

and

    let m = obj.method;
    let res = obj.method(arg);

being different things seems like an unfortunate trade-off (though not knowing the full reasons it was chosen to be that way makes me wary of assuming it was the wrong decision overall).

I've been known, for things where the object is e.g. a bag of components, to loop at construction time and replace all of my methods with pre-bound copies of themselves, but having to make a conscious decision as to whether I need to introduce that extra code (and work for the runtime per-instantiation) still makes me grumble to myself every time.