strikethroughItem method
Implementation
Parser<InlineNode> strikethroughItem() => seq2(
string('~~').not(),
[
ref0(codeSpan),
ref0(strong),
ref0(emphasis),
ref0(escapedCharNode),
ref0(strikethroughTextRun),
ref0(singleSpecialChar),
].toChoiceParser(),
).map2((_, node) => node);