[jdkoeck]

Alas, that’s a common misconception! You’re confusing properties with attributes. Attributes are set through HTML and are stringly typed, but litjs properties can be any js value.

For instance, I have a project with a small web component that displays data from a duckdb wasm connection. The connection object is passed as a property and it works flawlessly.

[chrismorgan]

If you’re using it with something like React, passing attributes is easy, but setting properties is much harder, requiring using the escape hatches—I believe you’ll need useRef and useEffect, and a bit of care because it’s frightfully easy to do the wrong thing.

[spankalee]

No, React sets properties by default now. It was one of the last holdouts, but they finally fixed this in 19.