You are meant to pass an argument to [].sort; If you don't, it falls back to the most generic thing that makes sense -- which is turning everything into a string and sorting lexicographically.
Arrays in JS can have any type in them, such as [number, string, function]. That's obviously very unlikely, but the only thing in common between all types in JS is that they can all be explicitly turned into strings.
And yes, I agree that throwing an error here for no argument would be better here (a linter WILL enforce this), but this is hardly a critical shortcoming of JS's standard library, and you DEFINITELY do not need a utility library just to use the language (especially for your examples).
You are meant to pass an argument to [].sort; If you don't, it falls back to the most generic thing that makes sense -- which is turning everything into a string and sorting lexicographically.
Arrays in JS can have any type in them, such as [number, string, function]. That's obviously very unlikely, but the only thing in common between all types in JS is that they can all be explicitly turned into strings.
And yes, I agree that throwing an error here for no argument would be better here (a linter WILL enforce this), but this is hardly a critical shortcoming of JS's standard library, and you DEFINITELY do not need a utility library just to use the language (especially for your examples).