5 ms·

This seems like the best solution. Any weird edge cases against this one?

• mirekrusin 5y ago
  +/- Infinity, better to use Number.isFinite.
• stagas 5y ago
  Infinities.
• JasonCannon 5y ago
  Comparing it against the list of examples given in is-number, this solution does not properly handle numbers represented as strings, and it also recognizes Infinity as a number.
  • TheCoelacanth 5y ago
    Because strings aren't numbers and Infinity is a number
    • JasonCannon 5y ago
      Strings are the safest way to hold big numbers in JavaScript due to how JavaScript represents numbers. Also no, infinity is not a number. It's a concept.
      • boomlinde 5y ago
        Numbers is a concept. For some purposes it is useful to consider a number that is infinite, which is why concepts like the extended real number line have been invented.