I was thinking that observing properties could be useful for hooking on to changes to some internal state that a third party library maintains, but doesn't prov

I was thinking that observing properties could be useful for hooking on to changes to some internal state that a third party library maintains, but doesn't provide a callback for (for instance, for persistence and/or synchronization). Is there a more idiomatic way to work around this in JS other than Object.observe if you don't want to resort to dirty checking or patching the library to provide a callback?