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

static const field core::int annotation = #C1;
static method f(dynamic x) → dynamic {
  final hoisted has-declared-initializer dynamic a;
  {
    final synthesized dynamic #0#0 = x as{TypeError,ForDynamic} core::Map<dynamic, dynamic>;
    synthesized dynamic #0#4;
    synthesized core::bool #0#4#isSet = false;
    if(!(#0#0 is core::Map<dynamic, dynamic> && (!((#0#4#isSet ?{dynamic} #0#4{dynamic} : let final dynamic #t1 = #0#4#isSet = true in #0#4 = #0#0{core::Map<dynamic, dynamic>}.{core::Map::[]}(#C2){(core::Object?) → dynamic}) == null) || null is dynamic && #0#0{core::Map<dynamic, dynamic>}.{core::Map::containsKey}(#C2){(core::Object?) → core::bool}) && (let final dynamic #t2 = a = #0#4#isSet ?{dynamic} #0#4{dynamic} : let final dynamic #t3 = #0#4#isSet = true in #0#4 = #0#0{core::Map<dynamic, dynamic>}.{core::Map::[]}(#C2){(core::Object?) → dynamic} in true)))
      throw{for-error-handling} new core::StateError::•("Pattern matching error");
  }
}

constants  {
  #C1 = 0
  #C2 = "a"
}