Earlier quoted context omitted.
I get it, JS is a weird language, but simple things like "is number" are still easy enough to do in JS, especially, when ints and floats are all just "number" in JS: function is_number(val) { return typeof val === "number"; } With a function that easily written, no one should have any excuse to depend on a third-party dependency for it.
But the code you posted is not what the code in this package does. If all you need is the code that you posted, then you should absolutely use that.
> not what the code in this package does
Here's `is-number` (https://github.com/jonschlinkert/is-number/blob/master/index...):
module.exports = function(num) {
if (typeof num === 'number') {
return num - num === 0;
}
if (typeof num === 'string' && num.trim() !== '') {
return Number.isFinite ? Number.isFinite(+num) : isFinite(+num);
}
return false;
};