Add throw option?

[sindresorhus]

Some user may want to differentiate when a regex timed out and when it just didn't match. We could add a throw option (better name suggestion welcome!) that makes it throw a RegexTimeout error instead returning an empty value.

[Richienb]

With all of these options that could apply to any function, there may be of use to also export a class so that custom default options could be set.

[sindresorhus]

An alternative is to export separate functions for the throwing variants. Thoughts on that?