⚡ Bolt: Add .lazy to chained array transformations in ViewModel

.jules/bolt.md

@@ -0,0 +1,3 @@
+## 2024-05-24 - `Array.lazy` Collection Chain Optimization
+**Learning:** Chaining array operations like `.filter {}.reduce()` allocates intermediate arrays that can negatively impact performance. The memory and computation cost is high, particularly in views or view models where properties might be accessed repeatedly.
+**Action:** Append `.lazy` before chained collection functions like `.filter` and `.map` when reducing an array to a single value to avoid memory allocations and unnecessary array traversals.

Sources/Cacheout/ViewModels/CacheoutViewModel.swift

@@ -114,7 +114,7 @@ class CacheoutViewModel: ObservableObject {
     }
 
     var totalRecoverable: Int64 {
-        scanResults.filter { !$0.isEmpty }.reduce(0) { $0 + $1.sizeBytes }
+        scanResults.lazy.filter { !$0.isEmpty }.reduce(0) { $0 + $1.sizeBytes }
     }
 
     var hasResults: Bool { !scanResults.isEmpty || !nodeModulesItems.isEmpty }
@@ -131,7 +131,7 @@ class CacheoutViewModel: ObservableObject {
     }
 
     var selectedNodeModulesSize: Int64 {
-        nodeModulesItems.filter(\.isSelected).reduce(0) { $0 + $1.sizeBytes }
+        nodeModulesItems.lazy.filter(\.isSelected).reduce(0) { $0 + $1.sizeBytes }
     }
 
     var formattedSelectedNodeModulesSize: String {