Dead branches are parts of the regex that can never accept on any given input string (e.g. []a|b => b).
This operation may produce parent nodes with 0 alternatives. Quantifiers with 0 alternatives and a minimum of 0 will
be replaced with the empty concatenation (e.g. a(?:[]b)?c => ac).
This transformer should be used in combination with inline to handle trivial simplifications.
This removes dead branches in the AST.
Dead branches are parts of the regex that can never accept on any given input string (e.g.
[]a|b=>b).This operation may produce parent nodes with 0 alternatives. Quantifiers with 0 alternatives and a minimum of 0 will be replaced with the empty concatenation (e.g.
a(?:[]b)?c=>ac).This transformer should be used in combination with inline to handle trivial simplifications.