Descending sort

[sindresorhus]

Would be useful to be able to sort descending too.

I'm thinking a syntax like:

sortOn([{x: 'c', y: 'c'}, {x: 'b', y: 'a'}, {x: 'b', y: 'b'}], ['-x', 'y']);
// sorts `x` descending

[stevemao]

I like it 👍

[kevva]

Yeah, currently I'm doing sortOn(arr, prop).reverse(), but would definitely be better to do it here.

[sindresorhus]

@kevva Yup, but that won't work correctly with muliple sort properties with different sorting directions like the above example.

[kevva]

How would this look with functions and dot props? And what if you have a key named -- or whatever? I'd rather use opts.order/opts.sort/opts.desc or whatever to avoid edge cases.

[sindresorhus]

How would this look with functions and dot props?

For dot props it would be the same -x.y. For functions I'm not really sure.

And what if you have a key named -- or whatever?

I've never seen that before, but as with dot-prop, we could allow escaping in that edge-case.

I'd rather use opts.order/opts.sort/opts.desc or whatever to avoid edge cases.

That would indeed be simpler, but would not enable different sorting between props as seen in my issue description.

[kevva]

I've never seen that before, but as with dot-prop, we could allow escaping in that edge-case.

Nah, me neither. Was just referring to that minimist thingy yesterday.

That would indeed be simpler, but would not enable different sorting between props as seen in my issue description.

Oh, that's a good point. Alright, I think this is worth a PR from me then :).