The input is an object, but it's value upon coercion to a number differs on each coercion. In a very strict sense, such a simple function could be considered impure. To make it strictly pure in JS, you could add a bunch of code checking types etc.
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The input is an object, but it's value upon coercion to a number differs on each coercion. In a very strict sense, such a simple function could be considered impure. To make it strictly pure in JS, you could add a bunch of code checking types etc.