diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..fb95e8f
Binary files /dev/null and b/.DS_Store differ
diff --git a/Sources/TsuzuKit/Extension/ArrayExtension.swift b/Sources/TsuzuKit/Extension/ArrayExtension.swift
index 0fb7b10..89d3c8f 100644
--- a/Sources/TsuzuKit/Extension/ArrayExtension.swift
+++ b/Sources/TsuzuKit/Extension/ArrayExtension.swift
@@ -1,12 +1,12 @@
 import Foundation
 
-extension Array {
+public extension Array {
   subscript (safe index: Index) -> Element? {
     return indices.contains(index) ? self[index] : nil
   }
 }
 
-extension RandomAccessCollection {
+public extension RandomAccessCollection {
   func indexed() -> Array<(offset: Int, element: Element)> {
     return Array(enumerated())
   }
diff --git a/Sources/TsuzuKit/Extension/ColorExtension.swift b/Sources/TsuzuKit/Extension/ColorExtension.swift
index c3875d2..63dc048 100644
--- a/Sources/TsuzuKit/Extension/ColorExtension.swift
+++ b/Sources/TsuzuKit/Extension/ColorExtension.swift
@@ -3,7 +3,6 @@ import SwiftUI
 @available(iOS 13.0, *)
 @available(macOS 12.0, *)
 public extension Color {
-
   init(
     hue: Double,
     saturation: Double,
diff --git a/Sources/TsuzuKit/Extension/ViewExtension.swift b/Sources/TsuzuKit/Extension/ViewExtension.swift
index 98df4bf..8b40830 100644
--- a/Sources/TsuzuKit/Extension/ViewExtension.swift
+++ b/Sources/TsuzuKit/Extension/ViewExtension.swift
@@ -1,6 +1,6 @@
 import SwiftUI
 
-extension View {
+public extension View {
   @ViewBuilder
   func `if`<Content: View>(
     _ condition: Bool,