https://github.com/squint-cljs/squint Which is a thin layer on top of JS
https://github.com/squint-cljs/cherry Which is closer to CLJS semantics and data structures but compiles to .mjs files without any advanced optimizations etc.
Besides those aspects, Dak is different than these two specifically in that it tries to provide something closer to a minimal 1-to-1 language feature mapping to JavaScript as the base, with a goal of having essentially no runtime.
The clean room implementation has downsides - Squint and Cherry can reuse Clojure tooling like clj-kondo etc, which Dak cannot. On the other hand Dak is small, the transpiler is under 2k lines as I write this. It can run on virtually any modern JavaScript runtime (all browsers, node, deno, bun etc).