In Lit, yes. It's hand-crafted web components with support for one-way data binding by parameter passing. Any other updates are by event notifications, as the commenter said.
Sorry if I wasn't clear. I'm a huge fan of Lit! It gives you the freedom to make your own framework -- the parts you need. I respect the OP's comment and our difference of opinion, which is why I didn't reply negatively to it.
