\lstdefinelanguage{Dart}{
  morekeywords={
    % normal keywords (without data types)
    abstract, as, assert, async, await, break, case, catch, class, const,
    continue, default, deferred, do, dynamic, else, enum, export, extends,
    extension, external, factory, false, final, finally, for, get, if, implements,
    import, in, interface, is, late, library, mixin, new, null, on, operator,
    part, required, rethrow, return, set, show, static, super, switch, sync,
    this, throw, true, try, typedef, var, void, while, with, yield
  },
  morekeywords={[2] % data types
    int, double, String, bool, List, Map, Set, Future, Stream
  },
  morekeywords={[3] % literals
    % reserved words for literal values
    null,true,false,
  },
  sensitive,
  morecomment  = [l]//,
  morecomment  = [s]{/*}{*/},
  morestring   = [b]",
  morestring   = [b]',
}