frontend: storybook: Fix startup failure caused by node story helpers

frontend/src/components/node/storyHelper.ts

@@ -14,8 +14,9 @@
  * limitations under the License.
  */
 
-import { KubeMetrics } from '../../lib/k8s/cluster';
-import { KubeNode, NODE_POOL_LABEL_KEYS } from '../../lib/k8s/node';
+import type { KubeMetrics } from '../../lib/k8s/cluster';
+import type { KubeNode } from '../../lib/k8s/node';
+import { NODE_POOL_LABEL_KEYS } from '../../lib/k8s/nodeConstants';
 
 const creationTimestamp = new Date('2022-01-01').toISOString();
 

frontend/src/lib/k8s/node.ts

@@ -23,6 +23,7 @@ import { KubeNodeSummaryStats, nodeSummaryStats } from './api/v2/nodeSummaryApi'
 import type { KubeCondition, KubeMetrics } from './cluster';
 import type { KubeObjectInterface } from './KubeObject';
 import { KubeObject } from './KubeObject';
+import { NODE_POOL_LABEL_KEYS } from './nodeConstants';
 
 export interface KubeNode extends KubeObjectInterface {
   status: {
@@ -63,18 +64,6 @@ export interface KubeNode extends KubeObjectInterface {
   };
 }
 
-/**
- * The exact label keys checked by {@link Node.getNodePool}.
- * Export this so test helpers and stories can strip them without drifting.
- */
-export const NODE_POOL_LABEL_KEYS = [
-  'cloud.google.com/gke-nodepool',
-  'kubernetes.azure.com/agentpool',
-  'eks.amazonaws.com/nodegroup',
-  'kops.k8s.io/instancegroup',
-  'cluster.x-k8s.io/deployment-name',
-] as const;
-
 class Node extends KubeObject<KubeNode> {
   static kind = 'Node';
   static apiName = 'nodes';
@@ -170,4 +159,8 @@ class Node extends KubeObject<KubeNode> {
   }
 }
 
+// Re-export for plugin compatibility. Import directly from nodeConstants.ts
+// when only the label keys are needed to avoid loading the Node implementation.
+export { NODE_POOL_LABEL_KEYS };
+
 export default Node;

frontend/src/lib/k8s/nodeConstants.ts

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2025 The Kubernetes Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * The exact label keys checked by Node.getNodePool().
+ *
+ * Exported separately so stories, tests, and other consumers can use the
+ * same source of truth without importing the full Node implementation.
+ */
+export const NODE_POOL_LABEL_KEYS = [
+  'cloud.google.com/gke-nodepool',
+  'kubernetes.azure.com/agentpool',
+  'eks.amazonaws.com/nodegroup',
+  'kops.k8s.io/instancegroup',
+  'cluster.x-k8s.io/deployment-name',
+] as const;