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Q: The W3C DOM APIs are available on both JS and JVM platforms (with some tiny differences).  But I’m having terrible trouble using them in a multiplatform project.  If I declare them with `expect` definitions, I basically have to redeclare all the DOM interfaces by hand, and then the `actual` definitions are duplicated in the js and jvm platform modules.  What do people usually do in multiplatform projects when platforms have common APIs?