Adding is.base64 and is.hex

I needed these for a project I'm working on.  Hope you find them useful.
Agreed.  I just talked to my fellow devs and they said the same thing.
It's easy enough to check for even length separately.

On Mon, Oct 20, 2014 at 2:39 PM, Jordan Harband <notifications@github.com>
wrote:

> In index.js:
>
> > @@ -20,6 +20,9 @@ var NON_HOST_TYPES = {
> >    undefined: 1
> >  };
> >
> > +var base64Regex = /^([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{4}|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)$/;
> > +var hexRegex = /^([A-Fa-f0-9]{2})+$/;
>
> if you're going to call it "is hex" then it needs to work for all hex
> strings, not just ones that node Buffers expect. I'd also rather not add a
> function to a general-purpose library that's specific to node Buffers.
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/enricomarino/is/pull/12/files#r19104208>.
>



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