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does Dommy provide a pure API on top of the DOM? (e.g., lens based) I don't immediately understand how one would make that performant given that the DOM is a mutable data structure.

edit: WebFUI[1] is one clojurescript project trying to provide a pure interface for dom manipulation; there are others.

[1] https://github.com/drcode/webfui

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No. We're not trying to do something pure on top of the DOM. That isn't feasible for performant manipulation. Being functional is about more than just immutability.

We use standard manipulation.

> I don't immediately understand how one would make that performant given that the DOM is a mutable data structure.

As a general rule, mutable API's tend to outperform immutable ones.

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