library;
//
// Problems in library:
//
// pkg/front_end/testcases/general/constants/const_collections.dart:23:51: Error: Unexpected type 'int' of a spread.  Expected 'dynamic' or an Iterable.
// const List<String> barWithIntSpread = [...foo, ...fortyTwo];
//                                                   ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:25:51: Error: Unexpected type 'Map<String, String>' of a spread.  Expected 'dynamic' or an Iterable.
//  - 'Map' is from 'dart:core'.
// const List<String> barWithMapSpread = [...foo, ...quux];
//                                                   ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:41:50: Error: Unexpected type 'int' of a map spread entry.  Expected 'dynamic' or a Map.
// const Set<String> quxWithIntSpread = {...baz, ...fortyTwo};
//                                                  ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:41:50: Error: Expected ',' before this.
// const Set<String> quxWithIntSpread = {...baz, ...fortyTwo};
//                                                  ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:42:38: Error: Both Iterable and Map spread elements encountered in ambiguous literal.
// const Set<String> quxWithMapSpread = {...baz, ...quux};
//                                      ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:48:59: Error: A value of type 'CustomIterable' can't be assigned to a variable of type 'String'.
//  - 'CustomIterable' is from 'pkg/front_end/testcases/general/constants/const_collections.dart'.
// const Set<String> quxWithCustomIterableSpread3 = {...baz, customIterable};
//                                                           ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:58:60: Error: Unexpected type 'int' of a map spread entry.  Expected 'dynamic' or a Map.
// const Map<String, String> quuzWithIntSpread = {...quux, ...fortyTwo};
//                                                            ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:59:47: Error: Both Iterable and Map spread elements encountered in ambiguous literal.
// const Map<String, String> quuzWithSetSpread = {...quux, ...baz};
//                                               ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:60:46: Error: Both Iterable and Map spread elements encountered in ambiguous literal.
// const Map<String, String> mapWithSetSpread = {...baz};
//                                              ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:22:40: Error: Constant evaluation error:
// const List<String> barWithNullSpread = [...foo, ...nullList];
//                                        ^
// pkg/front_end/testcases/general/constants/const_collections.dart:22:52: Context: Null value during constant evaluation.
// const List<String> barWithNullSpread = [...foo, ...nullList];
//                                                    ^
// pkg/front_end/testcases/general/constants/const_collections.dart:22:20: Context: While analyzing:
// const List<String> barWithNullSpread = [...foo, ...nullList];
//                    ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:24:46: Error: Constant evaluation error:
// const List<String> barWithIntDynamicSpread = [...foo, ...fortyTwoAsDynamic];
//                                              ^
// pkg/front_end/testcases/general/constants/const_collections.dart:24:58: Context: Expected constant '42' to be of type 'Iterable<dynamic>', but was of type 'int'.
//  - 'Iterable' is from 'dart:core'.
// const List<String> barWithIntDynamicSpread = [...foo, ...fortyTwoAsDynamic];
//                                                          ^
// pkg/front_end/testcases/general/constants/const_collections.dart:24:20: Context: While analyzing:
// const List<String> barWithIntDynamicSpread = [...foo, ...fortyTwoAsDynamic];
//                    ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:26:51: Error: Constant evaluation error:
// const List<String> barWithCustomIterableSpread1 = [
//                                                   ^
// pkg/front_end/testcases/general/constants/const_collections.dart:28:12: Context: Only lists and sets can be used in spreads in constant lists and sets.
//   ...const CustomIterable()
//            ^
// pkg/front_end/testcases/general/constants/const_collections.dart:26:20: Context: While analyzing:
// const List<String> barWithCustomIterableSpread1 = [
//                    ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:30:51: Error: Constant evaluation error:
// const List<String> barWithCustomIterableSpread2 = [...bar, ...CustomIterable()];
//                                                   ^
// pkg/front_end/testcases/general/constants/const_collections.dart:30:63: Context: Only lists and sets can be used in spreads in constant lists and sets.
// const List<String> barWithCustomIterableSpread2 = [...bar, ...CustomIterable()];
//                                                               ^
// pkg/front_end/testcases/general/constants/const_collections.dart:30:20: Context: While analyzing:
// const List<String> barWithCustomIterableSpread2 = [...bar, ...CustomIterable()];
//                    ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:32:51: Error: Constant evaluation error:
// const List<String> barWithCustomIterableSpread3 = [...bar, ...customIterable];
//                                                   ^
// pkg/front_end/testcases/general/constants/const_collections.dart:32:63: Context: Only lists and sets can be used in spreads in constant lists and sets.
// const List<String> barWithCustomIterableSpread3 = [...bar, ...customIterable];
//                                                               ^
// pkg/front_end/testcases/general/constants/const_collections.dart:32:20: Context: While analyzing:
// const List<String> barWithCustomIterableSpread3 = [...bar, ...customIterable];
//                    ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:33:43: Error: Constant evaluation error:
// const List<String> listConcat = ["Hello"] + ["World"];
//                                           ^
// pkg/front_end/testcases/general/constants/const_collections.dart:33:43: Context: The method '+' can't be invoked on '<String>["Hello"]' in a constant expression.
// const List<String> listConcat = ["Hello"] + ["World"];
//                                           ^
// pkg/front_end/testcases/general/constants/const_collections.dart:33:20: Context: While analyzing:
// const List<String> listConcat = ["Hello"] + ["World"];
//                    ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:40:39: Error: Constant evaluation error:
// const Set<String> quxWithNullSpread = {...baz, ...nullSet};
//                                       ^
// pkg/front_end/testcases/general/constants/const_collections.dart:40:51: Context: Null value during constant evaluation.
// const Set<String> quxWithNullSpread = {...baz, ...nullSet};
//                                                   ^
// pkg/front_end/testcases/general/constants/const_collections.dart:40:19: Context: While analyzing:
// const Set<String> quxWithNullSpread = {...baz, ...nullSet};
//                   ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:43:50: Error: Constant evaluation error:
// const Set<String> quxWithCustomIterableSpread1 = {
//                                                  ^
// pkg/front_end/testcases/general/constants/const_collections.dart:45:12: Context: Only lists and sets can be used in spreads in constant lists and sets.
//   ...const CustomIterable()
//            ^
// pkg/front_end/testcases/general/constants/const_collections.dart:43:19: Context: While analyzing:
// const Set<String> quxWithCustomIterableSpread1 = {
//                   ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:47:50: Error: Constant evaluation error:
// const Set<String> quxWithCustomIterableSpread2 = {...baz, ...CustomIterable()};
//                                                  ^
// pkg/front_end/testcases/general/constants/const_collections.dart:47:62: Context: Only lists and sets can be used in spreads in constant lists and sets.
// const Set<String> quxWithCustomIterableSpread2 = {...baz, ...CustomIterable()};
//                                                              ^
// pkg/front_end/testcases/general/constants/const_collections.dart:47:19: Context: While analyzing:
// const Set<String> quxWithCustomIterableSpread2 = {...baz, ...CustomIterable()};
//                   ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:49:48: Error: Constant evaluation error:
// const Set<dynamic> setWithNonPrimitiveEquals = {const WithEquals(42)};
//                                                ^
// pkg/front_end/testcases/general/constants/const_collections.dart:49:55: Context: The element 'WithEquals {i: 42}' does not have a primitive operator '=='.
//  - 'WithEquals' is from 'pkg/front_end/testcases/general/constants/const_collections.dart'.
// const Set<dynamic> setWithNonPrimitiveEquals = {const WithEquals(42)};
//                                                       ^
// pkg/front_end/testcases/general/constants/const_collections.dart:49:20: Context: While analyzing:
// const Set<dynamic> setWithNonPrimitiveEquals = {const WithEquals(42)};
//                    ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:50:40: Error: Constant evaluation error:
// const Set<dynamic> setWithDuplicates = {42, 42};
//                                        ^
// pkg/front_end/testcases/general/constants/const_collections.dart:50:45: Context: The element '42' conflicts with another existing element in the set.
// const Set<dynamic> setWithDuplicates = {42, 42};
//                                             ^
// pkg/front_end/testcases/general/constants/const_collections.dart:50:20: Context: While analyzing:
// const Set<dynamic> setWithDuplicates = {42, 42};
//                    ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:57:27: Error: Constant evaluation error:
// const Map<String, String> quuzWithNullSpread = {...quux, ...nullMap};
//                           ^
// pkg/front_end/testcases/general/constants/const_collections.dart:57:61: Context: Null value during constant evaluation.
// const Map<String, String> quuzWithNullSpread = {...quux, ...nullMap};
//                                                             ^
// pkg/front_end/testcases/general/constants/const_collections.dart:57:27: Context: While analyzing:
// const Map<String, String> quuzWithNullSpread = {...quux, ...nullMap};
//                           ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:61:27: Error: Constant evaluation error:
// const Map<String, String> mapWithCustomMap1 = {...const CustomMap()};
//                           ^
// pkg/front_end/testcases/general/constants/const_collections.dart:61:57: Context: Only maps can be used in spreads in constant maps.
// const Map<String, String> mapWithCustomMap1 = {...const CustomMap()};
//                                                         ^
// pkg/front_end/testcases/general/constants/const_collections.dart:61:27: Context: While analyzing:
// const Map<String, String> mapWithCustomMap1 = {...const CustomMap()};
//                           ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:62:27: Error: Constant evaluation error:
// const Map<String, String> mapWithCustomMap2 = {...CustomMap()};
//                           ^
// pkg/front_end/testcases/general/constants/const_collections.dart:62:51: Context: Only maps can be used in spreads in constant maps.
// const Map<String, String> mapWithCustomMap2 = {...CustomMap()};
//                                                   ^
// pkg/front_end/testcases/general/constants/const_collections.dart:62:27: Context: While analyzing:
// const Map<String, String> mapWithCustomMap2 = {...CustomMap()};
//                           ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:64:27: Error: Constant evaluation error:
// const Map<String, String> mapWithCustomMap3 = {...customMap};
//                           ^
// pkg/front_end/testcases/general/constants/const_collections.dart:64:51: Context: Only maps can be used in spreads in constant maps.
// const Map<String, String> mapWithCustomMap3 = {...customMap};
//                                                   ^
// pkg/front_end/testcases/general/constants/const_collections.dart:64:27: Context: While analyzing:
// const Map<String, String> mapWithCustomMap3 = {...customMap};
//                           ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:65:56: Error: Constant evaluation error:
// const Map<dynamic, int> mapWithNonPrimitiveEqualsKey = {
//                                                        ^
// pkg/front_end/testcases/general/constants/const_collections.dart:66:9: Context: The key 'WithEquals {i: 42}' does not have a primitive operator '=='.
//  - 'WithEquals' is from 'pkg/front_end/testcases/general/constants/const_collections.dart'.
//   const WithEquals(42): 42
//         ^
// pkg/front_end/testcases/general/constants/const_collections.dart:65:25: Context: While analyzing:
// const Map<dynamic, int> mapWithNonPrimitiveEqualsKey = {
//                         ^
//
// pkg/front_end/testcases/general/constants/const_collections.dart:68:41: Error: Constant evaluation error:
// const Map<int, int> mapWithDuplicates = {42: 42, 42: 42};
//                                         ^
// pkg/front_end/testcases/general/constants/const_collections.dart:68:50: Context: The key '42' conflicts with another existing key in the map.
// const Map<int, int> mapWithDuplicates = {42: 42, 42: 42};
//                                                  ^
// pkg/front_end/testcases/general/constants/const_collections.dart:68:21: Context: While analyzing:
// const Map<int, int> mapWithDuplicates = {42: 42, 42: 42};
//                     ^
//
import self as self;
import "dart:collection" as col;
import "dart:core" as core;

import "dart:collection";

class ConstIterable extends col::IterableBase<core::int*> /*hasConstConstructor*/  {
  const constructor •() → self::ConstIterable*
    : super col::IterableBase::•()
    ;
  get iterator() → core::Iterator<core::int*>*
    return <core::int*>[].{core::Iterable::iterator};
  abstract member-signature method cast<R extends core::Object* = dynamic>() → core::Iterable<self::ConstIterable::cast::R*>*; -> core::Iterable::cast
  abstract member-signature method followedBy(generic-covariant-impl core::Iterable<core::int*>* other) → core::Iterable<core::int*>*; -> core::Iterable::followedBy
  abstract member-signature method map<T extends core::Object* = dynamic>((core::int*) →* self::ConstIterable::map::T* f) → core::Iterable<self::ConstIterable::map::T*>*; -> core::Iterable::map
  abstract member-signature method where((core::int*) →* core::bool* test) → core::Iterable<core::int*>*; -> core::Iterable::where
  abstract member-signature method whereType<T extends core::Object* = dynamic>() → core::Iterable<self::ConstIterable::whereType::T*>*; -> core::Iterable::whereType
  abstract member-signature method expand<T extends core::Object* = dynamic>((core::int*) →* core::Iterable<self::ConstIterable::expand::T*>* f) → core::Iterable<self::ConstIterable::expand::T*>*; -> core::Iterable::expand
  abstract member-signature method contains(core::Object* element) → core::bool*; -> core::Iterable::contains
  abstract member-signature method forEach((core::int*) →* void f) → void; -> core::Iterable::forEach
  abstract member-signature method reduce(generic-covariant-impl (core::int*, core::int*) →* core::int* combine) → core::int*; -> core::Iterable::reduce
  abstract member-signature method fold<T extends core::Object* = dynamic>(self::ConstIterable::fold::T* initialValue, (self::ConstIterable::fold::T*, core::int*) →* self::ConstIterable::fold::T* combine) → self::ConstIterable::fold::T*; -> core::Iterable::fold
  abstract member-signature method every((core::int*) →* core::bool* test) → core::bool*; -> core::Iterable::every
  abstract member-signature method join([core::String* separator = #C1]) → core::String*; -> core::Iterable::join
  abstract member-signature method any((core::int*) →* core::bool* test) → core::bool*; -> core::Iterable::any
  abstract member-signature method toList({core::bool* growable = #C2}) → core::List<core::int*>*; -> core::Iterable::toList
  abstract member-signature method toSet() → core::Set<core::int*>*; -> core::Iterable::toSet
  abstract member-signature get length() → core::int*; -> core::Iterable::length
  abstract member-signature get isEmpty() → core::bool*; -> core::Iterable::isEmpty
  abstract member-signature get isNotEmpty() → core::bool*; -> core::Iterable::isNotEmpty
  abstract member-signature method take(core::int* count) → core::Iterable<core::int*>*; -> core::Iterable::take
  abstract member-signature method takeWhile((core::int*) →* core::bool* test) → core::Iterable<core::int*>*; -> core::Iterable::takeWhile
  abstract member-signature method skip(core::int* count) → core::Iterable<core::int*>*; -> core::Iterable::skip
  abstract member-signature method skipWhile((core::int*) →* core::bool* test) → core::Iterable<core::int*>*; -> core::Iterable::skipWhile
  abstract member-signature method firstWhere((core::int*) →* core::bool* test, {generic-covariant-impl () →* core::int* orElse = #C3}) → core::int*; -> core::Iterable::firstWhere
  abstract member-signature method lastWhere((core::int*) →* core::bool* test, {generic-covariant-impl () →* core::int* orElse = #C3}) → core::int*; -> core::Iterable::lastWhere
  abstract member-signature method singleWhere((core::int*) →* core::bool* test, {generic-covariant-impl () →* core::int* orElse = #C3}) → core::int*; -> core::Iterable::singleWhere
  abstract member-signature method elementAt(core::int* index) → core::int*; -> core::Iterable::elementAt
  abstract member-signature method toString() → core::String*; -> core::Iterable::toString
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
class WithEquals extends core::Object /*hasConstConstructor*/  {
  final field core::int* i;
  const constructor •(core::int* i) → self::WithEquals*
    : self::WithEquals::i = i, super core::Object::•()
    ;
  operator ==(core::Object* o) → core::bool* {
    return o is self::WithEquals* && (o{self::WithEquals*} as self::WithEquals*).{self::WithEquals::i}.{core::num::==}(this.{self::WithEquals::i});
  }
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
class CustomIterable extends col::IterableBase<core::String*> /*hasConstConstructor*/  {
  const constructor •() → self::CustomIterable*
    : super col::IterableBase::•()
    ;
  get iterator() → core::Iterator<core::String*>*
    return <core::String*>[].{core::Iterable::iterator};
  abstract member-signature method cast<R extends core::Object* = dynamic>() → core::Iterable<self::CustomIterable::cast::R*>*; -> core::Iterable::cast
  abstract member-signature method followedBy(generic-covariant-impl core::Iterable<core::String*>* other) → core::Iterable<core::String*>*; -> core::Iterable::followedBy
  abstract member-signature method map<T extends core::Object* = dynamic>((core::String*) →* self::CustomIterable::map::T* f) → core::Iterable<self::CustomIterable::map::T*>*; -> core::Iterable::map
  abstract member-signature method where((core::String*) →* core::bool* test) → core::Iterable<core::String*>*; -> core::Iterable::where
  abstract member-signature method whereType<T extends core::Object* = dynamic>() → core::Iterable<self::CustomIterable::whereType::T*>*; -> core::Iterable::whereType
  abstract member-signature method expand<T extends core::Object* = dynamic>((core::String*) →* core::Iterable<self::CustomIterable::expand::T*>* f) → core::Iterable<self::CustomIterable::expand::T*>*; -> core::Iterable::expand
  abstract member-signature method contains(core::Object* element) → core::bool*; -> core::Iterable::contains
  abstract member-signature method forEach((core::String*) →* void f) → void; -> core::Iterable::forEach
  abstract member-signature method reduce(generic-covariant-impl (core::String*, core::String*) →* core::String* combine) → core::String*; -> core::Iterable::reduce
  abstract member-signature method fold<T extends core::Object* = dynamic>(self::CustomIterable::fold::T* initialValue, (self::CustomIterable::fold::T*, core::String*) →* self::CustomIterable::fold::T* combine) → self::CustomIterable::fold::T*; -> core::Iterable::fold
  abstract member-signature method every((core::String*) →* core::bool* test) → core::bool*; -> core::Iterable::every
  abstract member-signature method join([core::String* separator = #C1]) → core::String*; -> core::Iterable::join
  abstract member-signature method any((core::String*) →* core::bool* test) → core::bool*; -> core::Iterable::any
  abstract member-signature method toList({core::bool* growable = #C2}) → core::List<core::String*>*; -> core::Iterable::toList
  abstract member-signature method toSet() → core::Set<core::String*>*; -> core::Iterable::toSet
  abstract member-signature get length() → core::int*; -> core::Iterable::length
  abstract member-signature get isEmpty() → core::bool*; -> core::Iterable::isEmpty
  abstract member-signature get isNotEmpty() → core::bool*; -> core::Iterable::isNotEmpty
  abstract member-signature method take(core::int* count) → core::Iterable<core::String*>*; -> core::Iterable::take
  abstract member-signature method takeWhile((core::String*) →* core::bool* test) → core::Iterable<core::String*>*; -> core::Iterable::takeWhile
  abstract member-signature method skip(core::int* count) → core::Iterable<core::String*>*; -> core::Iterable::skip
  abstract member-signature method skipWhile((core::String*) →* core::bool* test) → core::Iterable<core::String*>*; -> core::Iterable::skipWhile
  abstract member-signature method firstWhere((core::String*) →* core::bool* test, {generic-covariant-impl () →* core::String* orElse = #C3}) → core::String*; -> core::Iterable::firstWhere
  abstract member-signature method lastWhere((core::String*) →* core::bool* test, {generic-covariant-impl () →* core::String* orElse = #C3}) → core::String*; -> core::Iterable::lastWhere
  abstract member-signature method singleWhere((core::String*) →* core::bool* test, {generic-covariant-impl () →* core::String* orElse = #C3}) → core::String*; -> core::Iterable::singleWhere
  abstract member-signature method elementAt(core::int* index) → core::String*; -> core::Iterable::elementAt
  abstract member-signature method toString() → core::String*; -> core::Iterable::toString
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
class CustomMap extends core::Object implements core::Map<core::String*, core::String*> /*hasConstConstructor*/  {
  const constructor •() → self::CustomMap*
    : super core::Object::•()
    ;
  @#C4
  get entries() → core::Iterable<core::MapEntry<core::String*, core::String*>*>*
    return <core::MapEntry<core::String*, core::String*>*>[];
  @#C4
  operator [](core::Object* key) → core::String*
    return throw new core::UnimplementedError::•();
  @#C4
  operator []=(generic-covariant-impl core::String* key, generic-covariant-impl core::String* value) → void
    return throw new core::UnimplementedError::•();
  @#C4
  method cast<RK extends core::Object* = dynamic, RV extends core::Object* = dynamic>() → core::Map<self::CustomMap::cast::RK*, self::CustomMap::cast::RV*>*
    return throw new core::UnimplementedError::•();
  @#C4
  method clear() → void
    return throw new core::UnimplementedError::•();
  @#C4
  method containsKey(core::Object* key) → core::bool*
    return throw new core::UnimplementedError::•();
  @#C4
  method containsValue(core::Object* value) → core::bool*
    return throw new core::UnimplementedError::•();
  @#C4
  get isEmpty() → core::bool*
    return throw new core::UnimplementedError::•();
  @#C4
  get isNotEmpty() → core::bool*
    return throw new core::UnimplementedError::•();
  @#C4
  get keys() → core::Iterable<core::String*>*
    return throw new core::UnimplementedError::•();
  @#C4
  get length() → core::int*
    return throw new core::UnimplementedError::•();
  @#C4
  method remove(core::Object* key) → core::String*
    return throw new core::UnimplementedError::•();
  @#C4
  get values() → core::Iterable<core::String*>*
    return throw new core::UnimplementedError::•();
  @#C4
  method addAll(generic-covariant-impl core::Map<core::String*, core::String*>* other) → void
    return throw new core::UnimplementedError::•();
  @#C4
  method addEntries(generic-covariant-impl core::Iterable<core::MapEntry<core::String*, core::String*>*>* newEntries) → void
    return throw new core::UnimplementedError::•();
  @#C4
  method forEach((core::String*, core::String*) →* void f) → void
    return throw new core::UnimplementedError::•();
  @#C4
  method putIfAbsent(generic-covariant-impl core::String* key, generic-covariant-impl () →* core::String* ifAbsent) → core::String*
    return throw new core::UnimplementedError::•();
  @#C4
  method updateAll(generic-covariant-impl (core::String*, core::String*) →* core::String* update) → void
    return throw new core::UnimplementedError::•();
  @#C4
  method removeWhere((core::String*, core::String*) →* core::bool* predicate) → void
    return throw new core::UnimplementedError::•();
  method update(generic-covariant-impl core::String* key, generic-covariant-impl (core::String*) →* core::String* update, {generic-covariant-impl () →* core::String* ifAbsent = #C3}) → core::String*
    return throw new core::UnimplementedError::•();
  method map<K2 extends core::Object* = dynamic, V2 extends core::Object* = dynamic>((core::String*, core::String*) →* core::MapEntry<self::CustomMap::map::K2*, self::CustomMap::map::V2*>* f) → core::Map<self::CustomMap::map::K2*, self::CustomMap::map::V2*>*
    return throw new core::UnimplementedError::•();
  abstract member-signature get _identityHashCode() → core::int*; -> core::Object::_identityHashCode
  abstract member-signature method _instanceOf(dynamic instantiatorTypeArguments, dynamic functionTypeArguments, dynamic type) → core::bool*; -> core::Object::_instanceOf
  abstract member-signature method _simpleInstanceOf(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOf
  abstract member-signature method _simpleInstanceOfTrue(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfTrue
  abstract member-signature method _simpleInstanceOfFalse(dynamic type) → core::bool*; -> core::Object::_simpleInstanceOfFalse
  abstract member-signature operator ==(dynamic other) → core::bool*; -> core::Object::==
  abstract member-signature get hashCode() → core::int*; -> core::Object::hashCode
  abstract member-signature method toString() → core::String*; -> core::Object::toString
  abstract member-signature method noSuchMethod(core::Invocation* invocation) → dynamic; -> core::Object::noSuchMethod
  abstract member-signature get runtimeType() → core::Type*; -> core::Object::runtimeType
}
static const field core::int* fortyTwo = #C5;
static const field dynamic fortyTwoAsDynamic = #C5;
static const field core::List<core::String*>* nullList = #C3;
static const field core::List<core::String*>* foo = #C8;
static const field core::List<core::String*>* bar = #C10;
static field core::List<core::String*>* barAsVar = block {
  final core::List<core::String*>* #t1 = <core::String*>[];
  for (final core::String* #t2 in #C8)
    #t1.{core::List::add}(#t2);
  #t1.{core::List::add}("!");
} =>#t1;
static const field core::List<core::String*>* barWithNullSpread = invalid-expression "Null value during constant evaluation.";
static const field core::List<core::String*>* barWithIntSpread = invalid-expression "pkg/front_end/testcases/general/constants/const_collections.dart:23:51: Error: Unexpected type 'int' of a spread.  Expected 'dynamic' or an Iterable.
const List<String> barWithIntSpread = [...foo, ...fortyTwo];
                                                  ^";
static const field core::List<core::String*>* barWithIntDynamicSpread = invalid-expression "Expected constant '42' to be of type 'Iterable<dynamic>', but was of type 'int'.
 - 'Iterable' is from 'dart:core'.";
static const field core::List<core::String*>* barWithMapSpread = invalid-expression "pkg/front_end/testcases/general/constants/const_collections.dart:25:51: Error: Unexpected type 'Map<String, String>' of a spread.  Expected 'dynamic' or an Iterable.
 - 'Map' is from 'dart:core'.
const List<String> barWithMapSpread = [...foo, ...quux];
                                                  ^";
static const field core::List<core::String*>* barWithCustomIterableSpread1 = invalid-expression "Only lists and sets can be used in spreads in constant lists and sets.";
static const field core::List<core::String*>* barWithCustomIterableSpread2 = invalid-expression "Only lists and sets can be used in spreads in constant lists and sets.";
static const field self::CustomIterable* customIterable = #C11;
static const field core::List<core::String*>* barWithCustomIterableSpread3 = invalid-expression "Only lists and sets can be used in spreads in constant lists and sets.";
static const field core::List<core::String*>* listConcat = invalid-expression "The method '+' can't be invoked on '<String>[\"Hello\"]' in a constant expression.";
static const field core::Set<core::String*>* nullSet = #C3;
static const field core::Set<core::String*>* baz = #C14;
static const field core::Set<core::String*>* qux = #C17;
static const field core::Set<core::String*>* quxWithNullSpread = invalid-expression "Null value during constant evaluation.";
static const field core::Set<core::String*>* quxWithIntSpread = invalid-expression "pkg/front_end/testcases/general/constants/const_collections.dart:41:50: Error: Expected ',' before this.
const Set<String> quxWithIntSpread = {...baz, ...fortyTwo};
                                                 ^";
static const field core::Set<core::String*>* quxWithMapSpread = invalid-expression "pkg/front_end/testcases/general/constants/const_collections.dart:42:38: Error: Both Iterable and Map spread elements encountered in ambiguous literal.
const Set<String> quxWithMapSpread = {...baz, ...quux};
                                     ^";
static const field core::Set<core::String*>* quxWithCustomIterableSpread1 = invalid-expression "Only lists and sets can be used in spreads in constant lists and sets.";
static const field core::Set<core::String*>* quxWithCustomIterableSpread2 = invalid-expression "Only lists and sets can be used in spreads in constant lists and sets.";
static const field core::Set<core::String*>* quxWithCustomIterableSpread3 = invalid-expression "pkg/front_end/testcases/general/constants/const_collections.dart:48:59: Error: A value of type 'CustomIterable' can't be assigned to a variable of type 'String'.
 - 'CustomIterable' is from 'pkg/front_end/testcases/general/constants/const_collections.dart'.
const Set<String> quxWithCustomIterableSpread3 = {...baz, customIterable};
                                                          ^";
static const field core::Set<dynamic>* setWithNonPrimitiveEquals = invalid-expression "The element 'WithEquals {i: 42}' does not have a primitive operator '=='.
 - 'WithEquals' is from 'pkg/front_end/testcases/general/constants/const_collections.dart'.";
static const field core::Set<dynamic>* setWithDuplicates = invalid-expression "The element '42' conflicts with another existing element in the set.";
static const field core::Map<core::String*, core::String*>* nullMap = #C3;
static const field core::Map<core::String*, core::String*>* quux = #C19;
static const field core::Map<core::String*, core::String*>* quuz = #C22;
static const field core::Map<core::String*, core::String*>* quuzWithNullSpread = invalid-expression "Null value during constant evaluation.";
static const field core::Map<core::String*, core::String*>* quuzWithIntSpread = invalid-expression "pkg/front_end/testcases/general/constants/const_collections.dart:58:60: Error: Unexpected type 'int' of a map spread entry.  Expected 'dynamic' or a Map.
const Map<String, String> quuzWithIntSpread = {...quux, ...fortyTwo};
                                                           ^";
static const field core::Map<core::String*, core::String*>* quuzWithSetSpread = invalid-expression "pkg/front_end/testcases/general/constants/const_collections.dart:59:47: Error: Both Iterable and Map spread elements encountered in ambiguous literal.
const Map<String, String> quuzWithSetSpread = {...quux, ...baz};
                                              ^";
static const field core::Map<core::String*, core::String*>* mapWithSetSpread = invalid-expression "pkg/front_end/testcases/general/constants/const_collections.dart:60:46: Error: Both Iterable and Map spread elements encountered in ambiguous literal.
const Map<String, String> mapWithSetSpread = {...baz};
                                             ^";
static const field core::Map<core::String*, core::String*>* mapWithCustomMap1 = invalid-expression "Only maps can be used in spreads in constant maps.";
static const field core::Map<core::String*, core::String*>* mapWithCustomMap2 = invalid-expression "Only maps can be used in spreads in constant maps.";
static const field core::Map<core::String*, core::String*>* customMap = #C23;
static const field core::Map<core::String*, core::String*>* mapWithCustomMap3 = invalid-expression "Only maps can be used in spreads in constant maps.";
static const field core::Map<dynamic, core::int*>* mapWithNonPrimitiveEqualsKey = invalid-expression "The key 'WithEquals {i: 42}' does not have a primitive operator '=='.
 - 'WithEquals' is from 'pkg/front_end/testcases/general/constants/const_collections.dart'.";
static const field core::Map<core::int*, core::int*>* mapWithDuplicates = invalid-expression "The key '42' conflicts with another existing key in the map.";
static get fooAsGetter() → core::List<core::String*>*
  return #C8;
static get barAsGetter() → core::List<core::String*>*
  return #C10;
static get bazAsGetter() → core::Set<core::String*>*
  return #C14;
static get quxAsGetter() → core::Set<core::String*>*
  return #C17;
static get quuxAsGetter() → core::Map<core::String*, core::String*>*
  return #C19;
static get quuzAsGetter() → core::Map<core::String*, core::String*>*
  return #C22;
static method main() → dynamic {
  core::print(#C10);
  core::print(#C17);
  core::print(#C22);
  core::print( block {
    final core::Set<core::String*>* #t3 = col::LinkedHashSet::•<core::String*>();
    #t3.{core::Set::add}("hello");
  } =>#t3);
  core::print(#C26);
}

constants  {
  #C1 = ""
  #C2 = true
  #C3 = null
  #C4 = core::_Override {}
  #C5 = 42
  #C6 = "hello"
  #C7 = "world"
  #C8 = <core::String*>[#C6, #C7]
  #C9 = "!"
  #C10 = <core::String*>[#C6, #C7, #C9]
  #C11 = self::CustomIterable {}
  #C12 = <dynamic>[#C6, #C3, #C7, #C3]
  #C13 = core::_ImmutableMap<core::String*, Null> {_kvPairs:#C12}
  #C14 = col::_UnmodifiableSet<core::String*> {_map:#C13}
  #C15 = <dynamic>[#C6, #C3, #C7, #C3, #C9, #C3]
  #C16 = core::_ImmutableMap<core::String*, Null> {_kvPairs:#C15}
  #C17 = col::_UnmodifiableSet<core::String*> {_map:#C16}
  #C18 = <dynamic>[#C6, #C7]
  #C19 = core::_ImmutableMap<core::String*, core::String*> {_kvPairs:#C18}
  #C20 = "bye!"
  #C21 = <dynamic>[#C6, #C7, #C9, #C20]
  #C22 = core::_ImmutableMap<core::String*, core::String*> {_kvPairs:#C21}
  #C23 = self::CustomMap {}
  #C24 = <dynamic>[#C6, #C3]
  #C25 = core::_ImmutableMap<core::String*, Null> {_kvPairs:#C24}
  #C26 = col::_UnmodifiableSet<core::String*> {_map:#C25}
}