Add ArrowFunction and sort cases.

Author: CyrusNajmabadi

src/compiler/utilities.ts

@@ -681,32 +681,33 @@ module ts {
 
     export function isDeclaration(node: Node): boolean {
         switch (node.kind) {
-            case SyntaxKind.TypeParameter:
-            case SyntaxKind.Parameter:
-            case SyntaxKind.VariableDeclaration:
+            case SyntaxKind.ArrowFunction:
             case SyntaxKind.BindingElement:
-            case SyntaxKind.PropertyDeclaration:
-            case SyntaxKind.PropertySignature:
-            case SyntaxKind.PropertyAssignment:
-            case SyntaxKind.ShorthandPropertyAssignment:
+            case SyntaxKind.ClassDeclaration:
+            case SyntaxKind.Constructor:
+            case SyntaxKind.EnumDeclaration:
             case SyntaxKind.EnumMember:
-            case SyntaxKind.MethodDeclaration:
-            case SyntaxKind.MethodSignature:
+            case SyntaxKind.ExportSpecifier:
             case SyntaxKind.FunctionDeclaration:
+            case SyntaxKind.FunctionExpression:
             case SyntaxKind.GetAccessor:
-            case SyntaxKind.SetAccessor:
-            case SyntaxKind.Constructor:
-            case SyntaxKind.ClassDeclaration:
-            case SyntaxKind.InterfaceDeclaration:
-            case SyntaxKind.TypeAliasDeclaration:
-            case SyntaxKind.EnumDeclaration:
-            case SyntaxKind.ModuleDeclaration:
-            case SyntaxKind.ImportEqualsDeclaration:
             case SyntaxKind.ImportClause:
+            case SyntaxKind.ImportEqualsDeclaration:
             case SyntaxKind.ImportSpecifier:
+            case SyntaxKind.InterfaceDeclaration:
+            case SyntaxKind.MethodDeclaration:
+            case SyntaxKind.MethodSignature:
+            case SyntaxKind.ModuleDeclaration:
             case SyntaxKind.NamespaceImport:
-            case SyntaxKind.ExportSpecifier:
-            case SyntaxKind.FunctionExpression:
+            case SyntaxKind.Parameter:
+            case SyntaxKind.PropertyAssignment:
+            case SyntaxKind.PropertyDeclaration:
+            case SyntaxKind.PropertySignature:
+            case SyntaxKind.SetAccessor:
+            case SyntaxKind.ShorthandPropertyAssignment:
+            case SyntaxKind.TypeAliasDeclaration:
+            case SyntaxKind.TypeParameter:
+            case SyntaxKind.VariableDeclaration:
                 return true;
         }
         return false;