The operators "throw", "delete",  "void", "typeof", and "new" are not compiling to JS correctly. For example,

(ps (throw (if a b c)))

=>

"throw if (a) {
    b;
} else {
    c;
};"

when it should be:

"throw a ? b : c;"

There is an easy fix:

hunk ./src/special-forms.lisp 33
-                             (list 'js-named-operator ',op (compile-parenscript-form value)))))
+                             (list 'js-named-operator ',op (compile-parenscript-form value :expecting :expression)))))

Daniel