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1. Common Lisp is a fairly big specification for a lisp

2. People doing webdev in lisp have solutions that work "well enough" for them.

3. It's not obvious how to compile a lot of commonly used CL constructs into efficient javascript. Discarded multiple values, for example, are extremely efficient on bare-metal implementations, but will have measurable overhead when not inlined in any javascript implementation.

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I'm curious why the same tricks can't be used on discarded multiple values?

If I recall correctly they typically involve manipulating the execution stack; that's not something you can do in JS obviously.

Fair. I was assuming you could do something at the evaluation layer that was somewhat equivalent. But it makes sense the bare metal ones are doing something at the machine code layer.

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