Right-hand side of 'instanceof' is not an object about object-observer HOT 5 CLOSED

@xeroxstar can you please provide some info on your environment (if browser, then type and version, if other runtime - what is it and version)?
This kind of error can happen, IMHO, only when Date or Error object, which are pretty much standard ones on all modern browsers and Node, are not defined.

Thanks!

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Babel is a good place to look at - probably your transpilation target goes too far back or something like this.

Anyway, those lines are important :), so I'd suggest to have it working with them.

Let me know if you find anything or, please, close the issue if will become not relevant.

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Closing this one, please reopen if any new info becomes available.

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Checking.

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Hello,
I am still looking for the problem, surprisingly, it was working before on Node and on the Browser, I think the babel has something to do with that, I will let you know when I will figure out. For now I just removed few lines from the code, and it's working.

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