seq method
Returns a parser that accepts the receiver followed by other. The
resulting parser returns a list of the parse result of the receiver
followed by the parse result of other. Calling this method on an
existing sequence code does not nest this sequence into a new one, but
instead augments the existing sequence with other.
For example, the parser letter().seq(digit()).seq(letter()) accepts a
letter followed by a digit and another letter. The parse result of the
input string 'a1b' is the list <dynamic>['a', '1', 'b'].
Implementation
@useResult
Parser<List<dynamic>> seq(Parser other) => switch (this) {
SequenceParser(children: final children) => [
...children,
other,
].toSequenceParser(),
_ => [this, other].toSequenceParser(),
};