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Description
See discussion on http://dev.clojure.org/jira/browse/CLJS-300
This is a low priority patch for inlining instanceof checks. I don't know if it has any significant performance improvement, but the patch was sort of a side effect of my work on CLJS-300, so I figured I'd bundle it up and share it here in case someone wants to test it's perf impact and apply if it is a win.