library;
import self as self;
import "dart:core" as core;
import "dart:collection" as col;

static method test(dynamic y) → core::Iterable<dynamic> {
  return block {
    final core::Set<dynamic> #t1 = col::LinkedHashSet::•<dynamic>();
    for (final dynamic #t2 in block {
      final core::Set<dynamic> #t3 = col::LinkedHashSet::of<dynamic>(y as{TypeError,ForDynamic} core::Iterable<dynamic>);
    } =>#t3) {
      hoisted dynamic x;
      {
        final synthesized dynamic #0#0 = #t2;
        final const synthesized core::int #0#3 = #C1;
        if(!(#0#0 is core::List<dynamic> && #0#0{core::List<dynamic>}.{core::List::length}{core::int} =={core::num::==}{(core::Object) → core::bool} #C1 && (let final dynamic #t4 = x = #0#0{core::List<dynamic>}.{core::List::[]}(0){(core::int) → dynamic} in true)))
          throw{for-error-handling} new core::StateError::•("Pattern matching error");
      }
      #t1.{core::Set::add}{Invariant}(x){(dynamic) → core::bool};
    }
  } =>#t1;
}

constants  {
  #C1 = 1
}