Examples will never be of a function that always throws an error or one containing an infinite loop.
Never means never, it simply does not happen.
But throwing an error is not just void or undefined, it falls under the category of never
So can we not utilize never in a union? It may sound illogical at first glance, but upon further reflection, it makes sense. Ultimately, it provides precise context, doesn't it?
foo(input: string): number | never {
if (input === 'bazz') {
return 5;
}
throw new Error('could not do it');
}