|  | library; | 
|  | // | 
|  | // Problems in library: | 
|  | // | 
|  | // pkg/front_end/testcases/patterns/non_bool_guard.dart:7:28: Error: Conditions must have a static type of 'bool'. | 
|  | // Try changing the condition. | 
|  | //     case [var a, _] when a - 1: | 
|  | //                            ^ | 
|  | // | 
|  | // pkg/front_end/testcases/patterns/non_bool_guard.dart:15:32: Error: Conditions must have a static type of 'bool'. | 
|  | // Try changing the condition. | 
|  | //   if (v case [var a, _] when a - 1) { | 
|  | //                                ^ | 
|  | // | 
|  | // pkg/front_end/testcases/patterns/non_bool_guard.dart:23:23: Error: Conditions must have a static type of 'bool'. | 
|  | // Try changing the condition. | 
|  | //     [var a, _] when a - 1 => "match", | 
|  | //                       ^ | 
|  | // | 
|  | import self as self; | 
|  | import "dart:core" as core; | 
|  |  | 
|  | static method test1(core::List<core::int> v) → core::String { | 
|  | #L1: | 
|  | { | 
|  | final synthesized core::List<core::int> #0#0 = v; | 
|  | { | 
|  | hoisted core::int a; | 
|  | if(#0#0.{core::List::length}{core::int} =={core::num::==}{(core::Object) → core::bool} #C1 && (let final dynamic #t1 = a = #0#0.{core::List::[]}(0){(core::int) → core::int} in true) && invalid-expression "pkg/front_end/testcases/patterns/non_bool_guard.dart:7:28: Error: Conditions must have a static type of 'bool'. | 
|  | Try changing the condition. | 
|  | case [var a, _] when a - 1: | 
|  | ^") { | 
|  | { | 
|  | return "match"; | 
|  | } | 
|  | } | 
|  | } | 
|  | { | 
|  | { | 
|  | { | 
|  | return "no match"; | 
|  | } | 
|  | } | 
|  | } | 
|  | } | 
|  | } | 
|  | static method test2(core::List<core::int> v) → core::String { | 
|  | { | 
|  | final synthesized core::List<core::int> #0#0 = v; | 
|  | { | 
|  | hoisted core::int a; | 
|  | if(#0#0.{core::List::length}{core::int} =={core::num::==}{(core::Object) → core::bool} #C1 && (let final dynamic #t2 = a = #0#0.{core::List::[]}(0){(core::int) → core::int} in true) && invalid-expression "pkg/front_end/testcases/patterns/non_bool_guard.dart:15:32: Error: Conditions must have a static type of 'bool'. | 
|  | Try changing the condition. | 
|  | if (v case [var a, _] when a - 1) { | 
|  | ^") { | 
|  | return "match"; | 
|  | } | 
|  | } | 
|  | } | 
|  | return "no match"; | 
|  | } | 
|  | static method test3(core::List<core::int> v) → core::String | 
|  | return block { | 
|  | core::String #t3; | 
|  | final synthesized core::List<core::int> #0#0 = v; | 
|  | #L2: | 
|  | { | 
|  | { | 
|  | hoisted core::int a; | 
|  | if(#0#0.{core::List::length}{core::int} =={core::num::==}{(core::Object) → core::bool} #C1 && (let final dynamic #t4 = a = #0#0.{core::List::[]}(0){(core::int) → core::int} in true) && invalid-expression "pkg/front_end/testcases/patterns/non_bool_guard.dart:23:23: Error: Conditions must have a static type of 'bool'. | 
|  | Try changing the condition. | 
|  | [var a, _] when a - 1 => \"match\", | 
|  | ^") { | 
|  | #t3 = "match"; | 
|  | break #L2; | 
|  | } | 
|  | } | 
|  | { | 
|  | if(true) { | 
|  | #t3 = "no match"; | 
|  | break #L2; | 
|  | } | 
|  | } | 
|  | } | 
|  | } =>#t3; | 
|  |  | 
|  | constants  { | 
|  | #C1 = 2 | 
|  | } |