Xo: `--open` should open the first error, not warning

[sindresorhus]

I have warnings in many projects and it's annoying that it opens at the warning instead of the error. If there are no errors, it should go to the first warning. I think we could just sort the errors first.

Should not be done until https://github.com/sindresorhus/xo/pull/218 is merged.

[timdeschryver]

if its OK, I would like to try implementing this.

[sindresorhus]

Go ahead :)

[Qix-]

Welcome to Github, @tdeschryver! :)

[timdeschryver]

@sindresorhus Just to be sure, it should only open the warnings if there are no errors?
@Qix- thanks! :)

[kevva]

If there are no errors, it should go to the first warning

I take that as a yes @tdeschryver :).