Resolve comment references before function type aliases.

pkg/analyzer/lib/src/generated/resolver.dart

Index: pkg/analyzer/lib/src/generated/resolver.dart
diff --git a/pkg/analyzer/lib/src/generated/resolver.dart b/pkg/analyzer/lib/src/generated/resolver.dart
index 7c3433d5d18ec5f3c2bfe55be18287c8310b3a6e..43b81e984cd71037817c59855ed580c028517f9d 100644
--- a/pkg/analyzer/lib/src/generated/resolver.dart
+++ b/pkg/analyzer/lib/src/generated/resolver.dart
@@ -8497,9 +8497,11 @@ class ResolverVisitor extends ScopedVisitor {
 
   @override
   Object visitComment(Comment node) {
-    if (node.parent is FunctionDeclaration ||
-        node.parent is ConstructorDeclaration ||
-        node.parent is MethodDeclaration) {
+    AstNode parent = node.parent;
+    if (parent is FunctionDeclaration ||
+        parent is FunctionTypeAlias ||
+        parent is ConstructorDeclaration ||
+        parent is MethodDeclaration) {
       if (!identical(node, _commentBeforeFunction)) {
         _commentBeforeFunction = node;
         return null;
@@ -8929,6 +8931,16 @@ class ResolverVisitor extends ScopedVisitor {
   }
 
   @override
+  Object visitFormalParameterList(FormalParameterList node) {
+    super.visitFormalParameterList(node);
+    if (_commentBeforeFunction != null) {
+      safelyVisit(_commentBeforeFunction);
+      _commentBeforeFunction = null;
+    }
+    return null;
+  }
+
+  @override
   Object visitHideCombinator(HideCombinator node) => null;
 
   @override