diff --git a/packages/compiler-cli/src/ngtsc/reflection/src/util.ts b/packages/compiler-cli/src/ngtsc/reflection/src/util.ts
index f49d0b531e..8aaffc8b24 100644
--- a/packages/compiler-cli/src/ngtsc/reflection/src/util.ts
+++ b/packages/compiler-cli/src/ngtsc/reflection/src/util.ts
@@ -11,15 +11,19 @@ import {ClassDeclaration} from './host';
 
 export function isNamedClassDeclaration(node: ts.Node):
     node is ClassDeclaration<ts.ClassDeclaration> {
-  return ts.isClassDeclaration(node) && (node.name !== undefined);
+  return ts.isClassDeclaration(node) && isIdentifier(node.name);
 }
 
 export function isNamedFunctionDeclaration(node: ts.Node):
     node is ClassDeclaration<ts.FunctionDeclaration> {
-  return ts.isFunctionDeclaration(node) && (node.name !== undefined);
+  return ts.isFunctionDeclaration(node) && isIdentifier(node.name);
 }
 
 export function isNamedVariableDeclaration(node: ts.Node):
     node is ClassDeclaration<ts.VariableDeclaration> {
-  return ts.isVariableDeclaration(node) && (node.name !== undefined);
+  return ts.isVariableDeclaration(node) && isIdentifier(node.name);
+}
+
+function isIdentifier(node: ts.Node|undefined): node is ts.Identifier {
+  return node !== undefined && ts.isIdentifier(node);
 }