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Comment by paulddraper | Hacker News Reader

    npm i is-even

    const isEven = require("is-even");
    console.log(isEven(Infinity));

    TypeError: is-odd expects a number.

I read the title and I sarcastically thought "ask JavaScript!" Your comment didn't disappoint. Importing the is-even package is the cherry on top.

The amazing thing is that the is-even package depends on the is-odd package.

I would have thought the reverse, but ¯\_(ツ)_/¯

It’s an odd choice for sure.

The is-odd package depends on is-number!

Even with plain Javascript, `Infinity % 2` evaluates to `NaN`, as it should.

And if you implement, e.g.:

   function IsEven(x) { return x % 2 == 0; }
   function IsOdd(x)  { return x % 2 == 1; }

Then IsEven(Infinity) == false and IsOdd(Infinity) == false, as expected.

Nice find. I will file an issue, this is a very used package, it's important for it to be accurate.