Modules
Implements alternation:
('alt1' | 'alt2' | 'alt3').
Implements boundaries. The analogues in the regex world are word boundaries and anchors.
Implements character classes. The analogue in the regex world are character classes, shorthand character classes, non-printable characters, Unicode categories/scripts/blocks, POSIX classes and the dot.
Contains the Grapheme type, which matches a
Unicode grapheme.
Enums
A parsed rulex expression, which might contain more sub-expressions.