diff --git a/packages/pastojs/src/fppas2js.pp b/packages/pastojs/src/fppas2js.pp
index 4fc05014ff..46ee4b041a 100644
--- a/packages/pastojs/src/fppas2js.pp
+++ b/packages/pastojs/src/fppas2js.pp
@@ -540,6 +540,7 @@ resourcestring
   sInvalidVariableModifier = 'Invalid variable modifier "%s"';
   sPublishedNameMustMatchExternal = 'Published name must match external';
   sAWaitOnlyInAsyncProcedure = 'await only available in async procedure';
+  sAsyncFunctionOrPromise = 'async function or promise';
   sNewInstanceFunctionMustBeVirtual = 'NewInstance function must be virtual';
   sNewInstanceFunctionMustHaveTwoParameters = 'NewInstance function must have two parameters';
   sNewInstanceFunctionMustNotHaveOverloadAtX = 'NewInstance function must not have overload at %s';
@@ -6157,7 +6158,8 @@ var
       {$ENDIF}
 
       if RaiseOnError then
-        RaiseMsg(20201229232446,nXExpectedButYFound,sXExpectedButYFound,['async function or a promise',GetResolverResultDescription(ParamResolved)],Expr);
+        RaiseMsg(20201229232446, nXExpectedButYFound, sXExpectedButYFound, [
+          sAsyncFunctionOrPromise, GetResolverResultDescription(ParamResolved)], Expr);
     end;
   end;
 
diff --git a/packages/pastojs/tests/tcgenerics.pas b/packages/pastojs/tests/tcgenerics.pas
index e6b6022766..8e47fb5a88 100644
--- a/packages/pastojs/tests/tcgenerics.pas
+++ b/packages/pastojs/tests/tcgenerics.pas
@@ -40,7 +40,8 @@ type
     procedure TestGen_Class_OverloadsInUnit;
     procedure TestGen_ClassForward_CircleRTTI;
     procedure TestGen_Class_Nested_RTTI;
-    Procedure TestGen_Class_ClassVarRecord_UnitImpl;
+    procedure TestGen_Class_ClassVarRecord_UnitImpl;
+    procedure TestGen_Class_Field_ArrayOfSpec;
 
     // generic external class
     procedure TestGen_ExtClass_VarArgsOfType;
@@ -1289,6 +1290,47 @@ begin
     '']));
 end;
 
+procedure TTestGenerics.TestGen_Class_Field_ArrayOfSpec;
+begin
+  StartProgram(false);
+  Add([
+  '{$mode delphi}',
+  'type',
+  '  TObject = class',
+  '  end;',
+  '  TWing<T> = class',
+  '  end;',
+  '  TBird = class',
+  '    Wings: array of TWing<string>;',
+  '  end;',
+  'begin',
+  'end.']);
+  ConvertProgram;
+  CheckSource('TestGen_Class_Field_ArrayOfSpec',
+    LinesToStr([ // statements
+    'rtl.createClass(this, "TObject", null, function () {',
+    '  this.$init = function () {',
+    '  };',
+    '  this.$final = function () {',
+    '  };',
+    '});',
+    'rtl.createClass(this, "TWing$G1", this.TObject, function () {',
+    '}, "TWing<System.String>");',
+    'rtl.createClass(this, "TBird", this.TObject, function () {',
+    '  this.$init = function () {',
+    '    $mod.TObject.$init.call(this);',
+    '    this.Wings = [];',
+    '  };',
+    '  this.$final = function () {',
+    '    this.Wings = undefined;',
+    '    $mod.TObject.$final.call(this);',
+    '  };',
+    '});',
+    '']),
+    LinesToStr([ // $mod.$main
+    '']));
+end;
+
 procedure TTestGenerics.TestGen_ExtClass_VarArgsOfType;
 begin
   StartProgram(false);
diff --git a/packages/pastojs/tests/tcmodules.pas b/packages/pastojs/tests/tcmodules.pas
index 1179e7b35c..fe4038ecc9 100644
--- a/packages/pastojs/tests/tcmodules.pas
+++ b/packages/pastojs/tests/tcmodules.pas
@@ -35171,7 +35171,7 @@ begin
   'end;',
   'begin',
   '  Fly(1);']);
-  SetExpectedPasResolverError('async function expected, but Result:Word found',nXExpectedButYFound);
+  SetExpectedPasResolverError('async function or promise expected, but Result:Word found',nXExpectedButYFound);
   ConvertProgram;
 end;