From 0a317137c59fe4c79b1073b9bcce5409f308bf4d Mon Sep 17 00:00:00 2001
From: Patrik Oldsberg <poldsberg@gmail.com>
Date: Mon, 26 Aug 2024 11:47:56 +0200
Subject: [PATCH] frontend-plugin-api: use undefined instead of null for
 extension definition .T

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>
---
 .../frontend-app-api/src/tree/resolveAppNodeSpecs.test.ts     | 2 +-
 packages/frontend-plugin-api/src/wiring/createExtension.ts    | 2 +-
 .../src/wiring/resolveExtensionDefinition.test.ts             | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/packages/frontend-app-api/src/tree/resolveAppNodeSpecs.test.ts b/packages/frontend-app-api/src/tree/resolveAppNodeSpecs.test.ts
index 0be99c4969..b881d8e0f1 100644
--- a/packages/frontend-app-api/src/tree/resolveAppNodeSpecs.test.ts
+++ b/packages/frontend-app-api/src/tree/resolveAppNodeSpecs.test.ts
@@ -44,7 +44,7 @@ function makeExtDef(
 ) {
   return {
     $$type: '@backstage/ExtensionDefinition',
-    T: null as any,
+    T: undefined as any,
     version: 'v1',
     name,
     attachTo: { id: attachId, input: 'default' },
diff --git a/packages/frontend-plugin-api/src/wiring/createExtension.ts b/packages/frontend-plugin-api/src/wiring/createExtension.ts
index 8838f7bf9a..445bbd8a68 100644
--- a/packages/frontend-plugin-api/src/wiring/createExtension.ts
+++ b/packages/frontend-plugin-api/src/wiring/createExtension.ts
@@ -390,7 +390,7 @@ export function createExtension<
   return {
     $$type: '@backstage/ExtensionDefinition',
     version: 'v2',
-    T: null as unknown as T,
+    T: undefined as unknown as T,
     kind: options.kind,
     namespace: options.namespace,
     name: options.name,
diff --git a/packages/frontend-plugin-api/src/wiring/resolveExtensionDefinition.test.ts b/packages/frontend-plugin-api/src/wiring/resolveExtensionDefinition.test.ts
index cc874f9d03..09c7b9e9a9 100644
--- a/packages/frontend-plugin-api/src/wiring/resolveExtensionDefinition.test.ts
+++ b/packages/frontend-plugin-api/src/wiring/resolveExtensionDefinition.test.ts
@@ -23,7 +23,7 @@ import {
 describe('resolveExtensionDefinition', () => {
   const baseDef = {
     $$type: '@backstage/ExtensionDefinition',
-    T: null as any,
+    T: undefined as any,
     version: 'v2',
     attachTo: { id: '', input: '' },
     disabled: false,
@@ -65,7 +65,7 @@ describe('resolveExtensionDefinition', () => {
 describe('old resolveExtensionDefinition', () => {
   const baseDef = {
     $$type: '@backstage/ExtensionDefinition',
-    T: null as any,
+    T: undefined as any,
     version: 'v1',
     attachTo: { id: '', input: '' },
     disabled: false,