utility update

Sources/UIComponent/Core/Model/Component/Component+Modifier.swift

@@ -634,6 +634,24 @@ public extension Component {
     func environment<Value>(_ keyType: any EnvironmentKey<Value>.Type, value: Value) -> EnvironmentComponent<Value, Self> {
         EnvironmentComponent(keyType: keyType, value: value, content: self)
     }
+
+    /// Applies an environment value to the component for the given key path.
+    /// - Parameters:
+    ///   - keyPath: A key path to a specific environment value.
+    ///   - valueBuilder: A closure to be called to generate the value to set for the environment key.
+    /// - Returns: An `EnvironmentComponent` that provides the environment value to the component.
+    func environment<Value>(_ keyPath: WritableKeyPath<EnvironmentValues, Value>, valueBuilder: () -> Value) -> EnvironmentComponent<Value, Self> {
+        EnvironmentComponent(keyPath: keyPath, value: valueBuilder(), content: self)
+    }
+
+    /// Applies an environment value to the component for the given environment key type.
+    /// - Parameters:
+    ///   - keyType: The type of the environment key.
+    ///   - valueBuilder: A closure to be called to generate the value to set for the environment key.
+    /// - Returns: An `EnvironmentComponent` that provides the environment value to the component.
+    func environment<Value>(_ keyType: any EnvironmentKey<Value>.Type, valueBuilder: () -> Value) -> EnvironmentComponent<Value, Self> {
+        EnvironmentComponent(keyType: keyType, value: valueBuilder(), content: self)
+    }
 }
 
 // MARK: - Type erase modifiers

Sources/UIComponent/Core/Model/Component/ComponentArrayBuilder.swift

@@ -12,6 +12,9 @@ public struct ComponentArrayBuilder {
     public static func buildExpression(_ expression: any Component) -> [any Component] {
         [expression]
     }
+    public static func buildExpression(_ expression: (any Component)?) -> [any Component] {
+        [expression].compactMap { $0 }
+    }
     public static func buildExpression(_ expression: [any Component]) -> [any Component] {
         expression
     }