Comment by EdiX

11 years ago 

    JS does not have an Integer type, so (x > 0) does not work

It depends on what the surrounding code actually does wheter (x > 0) works or not. Depending on the version of is-positive-integer you are using a positive instance of the class Number may return true, false or cause an error.

PS. never mind that the implementation of is-positive-integer is extremely inefficient.

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EdiX

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