change: [UIE-9908] - Update Generational Plans default sort to show newest (G8) -> oldest (G6)

packages/manager/.changeset/pr-13234-changed-1767172149210.md

@@ -0,0 +1,5 @@
+---
+"@linode/manager": Changed
+---
+
+Update Generational Plans default sort to show newest (G8) -> oldest (G6) ([#13234](https://github.com/linode/manager/pull/13234))

packages/manager/src/features/components/PlansPanel/utils/planFilters.test.ts

@@ -11,6 +11,7 @@ import {
   filterPlansByGpuType,
   filterPlansByType,
   getAvailableTypes,
+  getGenerationRank,
   supportsTypeFiltering,
 } from './planFilters';
 
@@ -240,4 +241,32 @@ describe('planFilters utilities', () => {
       expect(result).toEqual(gpuPlans);
     });
   });
+
+  describe('getGenerationRank', () => {
+    it('returns higher rank for newer generations', () => {
+      expect(getGenerationRank('g8-dedicated-4-2')).toBeGreaterThan(
+        getGenerationRank('g7-dedicated-4-2')
+      );
+      expect(getGenerationRank('g7-dedicated-4-2')).toBeGreaterThan(
+        getGenerationRank('g6-dedicated-2')
+      );
+    });
+
+    it('handles multi-digit generations correctly', () => {
+      expect(getGenerationRank('g10-dedicated-2')).toBeGreaterThan(
+        getGenerationRank('g8-dedicated-4-2')
+      );
+      expect(getGenerationRank('g11-dedicated-2')).toBeGreaterThan(
+        getGenerationRank('g10-dedicated-2')
+      );
+    });
+
+    it('returns 0 for unknown generations', () => {
+      expect(getGenerationRank('legacy-plan')).toBe(0);
+      expect(getGenerationRank('gg-xyz')).toBe(0);
+      expect(getGenerationRank('g-pqr')).toBe(0);
+      expect(getGenerationRank('x123')).toBe(0);
+      expect(getGenerationRank('')).toBe(0);
+    });
+  });
 });

packages/manager/src/features/components/PlansPanel/utils/planFilters.ts

@@ -68,6 +68,26 @@ export const filterPlansByGeneration = (
 // Type Filtering
 // ============================================================================
 
+/**
+ * Returns the numeric generation of a plan based on its ID.
+ * Higher generation number = newer plan (shown first).
+ *
+ * Example:
+ * - "g8-dedicated-4-2" -> 8
+ * - "g1-accelerated-netint-vpu" -> 1
+ * - "legacy-plan" -> 0
+ */
+export const getGenerationRank = (planId: string): number => {
+  const generation = planId.split('-')[0]; // eg., "g8" or "legacy"
+
+  // Safe fallback: must start with "g"
+  if (!generation.startsWith('g')) return 0;
+
+  const num = Number(generation.slice(1));
+
+  return Number.isFinite(num) ? num : 0;
+};
+
 /**
  * Filter plans by type within a generation
  *
@@ -88,9 +108,11 @@ export const filterPlansByType = (
   generation: PlanFilterGeneration,
   type: PlanFilterType
 ): PlanWithAvailability[] => {
-  // "All" returns all plans unchanged
+  // "All" returns all plans, sorted from newest to oldest generations
   if (type === PLAN_FILTER_ALL) {
-    return plans;
+    return [...plans].sort(
+      (a, b) => getGenerationRank(b.id) - getGenerationRank(a.id)
+    );
   }
 
   // G7, G6, and "All" generation only have "All" option (no sub-types)