Analyzer exception on build

[vasner]

Dart 1.24.2
WebStorm 2017.2
macOS 10.12.5

AnalysisException: Cannot compute LIBRARY_ELEMENT for Instance of 'AssetBasedSource'
Caused by Mismatch in DeclarationResolver while resolving google_maps|lib/util/async.dart
Could not find element with name "" at 637
Path to root: FunctionExpressionImpl, DefaultFormalParameterImpl, FormalParameterListImpl, FunctionExpressionImpl, FunctionDeclarationImpl, CompilationUnitImpl
#0 RecursiveAstVisitor&ExistingElementResolver._mismatch (package:analyzer/src/generated/resolver.dart:3464:5)
#1 DeclarationResolver._findWithNameAndOffset (package:analyzer/src/generated/resolver.dart:2833:5)
#2 DeclarationResolver._findAtOffset (package:analyzer/src/generated/resolver.dart:2780:7)
#3 DeclarationResolver.visitFunctionExpression (package:analyzer/src/generated/resolver.dart:2536:33)
#4 FunctionExpressionImpl.accept (package:analyzer/src/dart/ast/ast.dart:5265:15)
#5 DefaultFormalParameterImpl.visitChildren (package:analyzer/src/dart/ast/ast.dart:3420:20)
#6 RecursiveAstVisitor.visitDefaultFormalParameter (package:analyzer/dart/ast/visitor.dart:1497:10)
#7 DeclarationResolver.visitDefaultFormalParameter (package:analyzer/src/generated/resolver.dart:2432:40)
#8 DefaultFormalParameterImpl.accept (package:analyzer/src/dart/ast/ast.dart:3415:15)
#9 NodeListImpl.accept (package:analyzer/src/dart/ast/ast.dart:7749:20)
#10 FormalParameterListImpl.visitChildren (package:analyzer/src/dart/ast/ast.dart:4765:17)
#11 RecursiveAstVisitor.visitFormalParameterList (package:analyzer/dart/ast/visitor.dart:1587:10)
#12 FormalParameterListImpl.accept (package:analyzer/src/dart/ast/ast.dart:4761:15)
#13 FunctionExpressionImpl.visitChildren (package:analyzer/src/dart/ast/ast.dart:5270:18)
#14 RecursiveAstVisitor.visitFunctionExpression (package:analyzer/dart/ast/visitor.dart:1611:10)
#15 DeclarationResolver.visitFunctionExpression (package:analyzer/src/generated/resolver.dart:2544:43)
#16 FunctionExpressionImpl.accept (package:analyzer/src/dart/ast/ast.dart:5265:15)
#17 FunctionDeclarationImpl.visitChildren (package:analyzer/src/dart/ast/ast.dart:5116:26)
#18 RecursiveAstVisitor.visitFunctionDeclaration (package:analyzer/dart/ast/visitor.dart:1599:10)
#19 DeclarationResolver.visitFunctionDeclaration (package:analyzer/src/generated/resolver.dart:2525:37)
#20 FunctionDeclarationImpl.accept (package:analyzer/src/dart/ast/ast.dart:5109:15)
#21 NodeListImpl.accept (package:analyzer/src/dart/ast/ast.dart:7749:20)
#22 CompilationUnitImpl.visitChildren (package:analyzer/src/dart/ast/ast.dart:2452:21)
#23 RecursiveAstVisitor.visitCompilationUnit (package:analyzer/dart/ast/visitor.dart:1449:10)
#24 CompilationUnitImpl.accept (package:analyzer/src/dart/ast/ast.dart:2445:15)
#25 DeclarationResolver.resolve (package:analyzer/src/generated/resolver.dart:2328:10)
#26 BuildCompilationUnitElementTask.internalPerform (package:analyzer/src/task/dart.dart:1080:33)
#27 AnalysisTask._safelyPerform (package:analyzer/task/model.dart:339:9)
#28 AnalysisTask.perform (package:analyzer/task/model.dart:238:7)
#29 AnalysisDriver.performWorkItem (package:analyzer/src/task/driver.dart:284:10)
#30 AnalysisDriver.computeResult (package:analyzer/src/task/driver.dart:109:22)
#31 AnalysisContextImpl.computeResult (package:analyzer/src/context/context.dart:723:14)
#32 AnalysisContextImpl.computeLibraryElement (package:analyzer/src/context/context.dart:696:12)
#33 ResolverImpl._performResolve.. (package:code_transformers/src/resolver_impl.dart:167:25)
#34 MappedListIterable.elementAt (dart:_internal/iterable.dart:413)
#35 ListIterable.toList (dart:_internal/iterable.dart:218)
#36 ResolverImpl._performResolve. (package:code_transformers/src/resolver_impl.dart:168:10)
#37 StackZoneSpecification._registerUnaryCallback.. (package:stack_trace/src/stack_zone_specification.dart:109:26)
#38 StackZoneSpecification._run (package:stack_trace/src/stack_zone_specification.dart:187:15)
#39 StackZoneSpecification._registerUnaryCallback. (package:stack_trace/src/stack_zone_specification.dart:109:14)
#40 _rootRunUnary (dart:async/zone.dart:1128)
#41 _CustomZone.runUnary (dart:async/zone.dart:1012)
#42 _FutureListener.handleValue (dart:async/future_impl.dart:129)
#43 _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:636)
#44 _Future._propagateToListeners (dart:async/future_impl.dart:665)
#45 _Future._completeWithValue (dart:async/future_impl.dart:478)
#46 _Future._asyncComplete. (dart:async/future_impl.dart:510)
#47 StackZoneSpecification._run (package:stack_trace/src/stack_zone_specification.dart:187:15)
#48 StackZoneSpecification._registerCallback. (package:stack_trace/src/stack_zone_specification.dart:99:48)
#49 _rootRun (dart:async/zone.dart:1120)
#50 _CustomZone.run (dart:async/zone.dart:1001)
#51 _CustomZone.runGuarded (dart:async/zone.dart:901)
#52 _CustomZone.bindCallback. (dart:async/zone.dart:926)
#53 _microtaskLoop (dart:async/schedule_microtask.dart:41)
#54 _startMicrotaskLoop (dart:async/schedule_microtask.dart:50)
#55 _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:99)
#56 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:152)

package:analyzer/src/context/context.dart 728:7 AnalysisContextImpl.computeResult
package:analyzer/src/context/context.dart 696:12 AnalysisContextImpl.computeLibraryElement
package:code_transformers/src/resolver_impl.dart 167:25 ResolverImpl._performResolve..
dart:_internal ListIterable.toList
package:code_transformers/src/resolver_impl.dart 168:10 ResolverImpl._performResolve.
dart:async _Future.then
package:code_transformers/src/resolver_impl.dart 154:28 ResolverImpl._performResolve
package:code_transformers/src/resolver_impl.dart 90:14 ResolverImpl.resolve.
dart:async _Future.whenComplete
package:code_transformers/src/resolver_impl.dart 88:37 ResolverImpl.resolve
package:code_transformers/src/resolvers.dart 63:17 Resolvers.get
package:build_barback/src/analyzer/resolver.dart 48:44 BarbackResolvers.get
dart:async new Future.microtask
package:build_barback/src/analyzer/resolver.dart 47:61 BarbackResolvers.get
package:build/src/builder/build_step_impl.dart 54:61 BuildStepImpl.resolver
package:source_gen/src/builder.dart 31:36 GeneratorBuilder.build
dart:async new Future.microtask
package:source_gen/src/builder.dart 30:43 GeneratorBuilder.build
package:build/src/generate/run_builder.dart 35:21 runBuilder.buildForInput
dart:async new Future.microtask
package:build/src/generate/run_builder.dart 29:51 runBuilder.buildForInput
dart:async Future.wait
package:build/src/generate/run_builder.dart 41:31 runBuilder.
dart:async runZoned
package:build/src/builder/logging.dart 12:38 scopeLog
package:build/src/generate/run_builder.dart 41:9 runBuilder
dart:async new Future.microtask
package:build/src/generate/run_builder.dart 25:48 runBuilder
package:build_runner/src/generate/build_impl.dart 554:13 BuildImpl._runBuilder
dart:async _StreamIterator.moveNext
package:build_runner/src/generate/build_impl.dart 442:34 BuildImpl._runPhases.
dart:async new Future.microtask
package:build_runner/src/generate/build_impl.dart 440:50 BuildImpl._runPhases.
dart:async Future.wait
package:build_runner/src/generate/build_impl.dart 440:20 BuildImpl._runPhases
dart:async new Future.microtask
package:build_runner/src/generate/build_impl.dart 429:42 BuildImpl._runPhases
package:build_runner/src/logging/logging.dart 19:28 logWithTime
dart:async new Future.microtask
package:build_runner/src/logging/logging.dart 16:70 logWithTime
package:build_runner/src/generate/build_impl.dart 146:26 BuildImpl.runBuild.
dart:async _asyncThenWrapperHelper
package:build_runner/src/generate/build_impl.dart 78:28 BuildImpl.runBuild.
package:stack_trace Chain.capture
package:build_runner/src/generate/build_impl.dart 78:11 BuildImpl.runBuild

[bwilkerson]

I'm assuming that this is stale. Please let us know if you're still seeing this problem.