mixins

[trusktr]

Feature request

Pleeeease? 🙏

Use case(s)

Without mixins, Skate has a new issue:

Suppose I import CoolElement from 'cool-element', and CoolElement does not have SkateJS features.

Because SkateJS strictly extends from HTMLElement, I'm stuck, I can not combine Skate features with CoolElement.

If Skate had mixins, then I could write withUpdate(CoolElement), then make a subclass of that to extend it.

[treshugart]

There's a withProps export from @skatejs/element that you can probably use. I think I'd like to find a better name like withElement.

[trusktr]

Just checked withProps, but all it does is define props and sets attributes on set. I still need to extend from the Component class to get the other stuff withUpdate otherwise had, but now I'll have some other features I don't necessarily need.

I'm still in favor of mixins, and keeping things separate to maximize flexibility:

• The withProps mixin could be modified to remove attribute handling.
• A withAttribute mixin could build on it to add attribute reactivity using observedAttributes.
• Finally, a withUpdate mixin could build on both of those to add life cycle stuff (updating, updated, shouldUpdate, etc)

[treshugart]

All you should need to do:

1. Disabled attribute updates by setting { target: false }.
2. Implement a forceUpdate() method.