From a27f175a3b192c5de271a7e226575b7574f8096a Mon Sep 17 00:00:00 2001
From: Momo Kornher <kornherm@amazon.co.uk>
Date: Fri, 26 Apr 2024 10:22:42 +0100
Subject: [PATCH] fix(reflect): additional type predicates for `isXyzType`
 methods

---
 packages/jsii-reflect/lib/enum.ts      | 2 +-
 packages/jsii-reflect/lib/interface.ts | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/jsii-reflect/lib/enum.ts b/packages/jsii-reflect/lib/enum.ts
index ac9c6bbd64..6e4db8eaa0 100644
--- a/packages/jsii-reflect/lib/enum.ts
+++ b/packages/jsii-reflect/lib/enum.ts
@@ -18,7 +18,7 @@ export class EnumType extends Type {
     return this.spec.members.map((m) => new EnumMember(this, m));
   }
 
-  public isEnumType() {
+  public isEnumType(): this is EnumType {
     return true;
   }
 }
diff --git a/packages/jsii-reflect/lib/interface.ts b/packages/jsii-reflect/lib/interface.ts
index d02ec2933b..05567cce07 100644
--- a/packages/jsii-reflect/lib/interface.ts
+++ b/packages/jsii-reflect/lib/interface.ts
@@ -72,11 +72,11 @@ export class InterfaceType extends ReferenceType {
     return Object.fromEntries(this._getMethods(inherited, this));
   }
 
-  public isDataType() {
+  public isDataType(): this is InterfaceType {
     return !!this.spec.datatype;
   }
 
-  public isInterfaceType() {
+  public isInterfaceType(): this is InterfaceType {
     return true;
   }