Simplified Version? No longer requires UIKit, only for SwiftUI? Must test

Package.swift

@@ -23,7 +23,7 @@ let package = Package(
             name: "CustomFontsPackage",
             dependencies: [],
             exclude: ["Images"],
-            resources: [.process("Fonts")]
+            resources: [.process("Resources")]
         ),
         .testTarget(
             name: "CustomFontsPackageTests",

Sources/CustomFontsPackage/CustomFontsPackage.swift

@@ -1,39 +1,50 @@
 import Foundation
-import UIKit
+//import UIKit
 
 public let fontBundle = Bundle.module
 
-public func registerFonts() {
-    _ = UIFont.registerFont(bundle: .module, fontName: "BeautifulPeople-Regular", fontExtension: "ttf")
-    _ = UIFont.registerFont(bundle: .module, fontName: "VeganStyle-Regular", fontExtension: "ttf")
-}
+//public func registerFonts() {
+//    _ = UIFont.registerFont(bundle: .module, fontName: "BeautifulPeople-Regular", fontExtension: "ttf")
+//    _ = UIFont.registerFont(bundle: .module, fontName: "VeganStyle-Regular", fontExtension: "ttf")
+//}
 
-extension UIFont {
-    static func registerFont(bundle: Bundle, fontName: String, fontExtension: String) -> Bool {
-
-        guard let fontURL = bundle.url(forResource: fontName, withExtension: fontExtension) else {
-            fatalError("Couldn't find font \(fontName)")
-        }
-
-        guard let fontDataProvider = CGDataProvider(url: fontURL as CFURL) else {
-            fatalError("Couldn't load data from the font \(fontName)")
-        }
-
-        guard let font = CGFont(fontDataProvider) else {
-            fatalError("Couldn't create font from data")
-        }
-
-        var error: Unmanaged<CFError>?
-        let success = CTFontManagerRegisterGraphicsFont(font, &error)
-        guard success else {
-            print("Error registering font: \(fontName). Maybe it was already registered.")
-            return false
-        }
-
-        return true
+func registerFont(_ name: String, fileExtension: String) {
+    guard let fontURL = Bundle.module.url(forResource: name, withExtension: fileExtension) else {
+        print("No font named \(name).\(fileExtension) was found in the module bundle")
+        return
     }
+
+    var error: Unmanaged<CFError>?
+    CTFontManagerRegisterFontsForURL(fontURL as CFURL, .process, &error)
+    print(error ?? "Successfully registered font: \(name)")
 }
 
+//extension UIFont {
+//    static func registerFont(bundle: Bundle, fontName: String, fontExtension: String) -> Bool {
+//
+//        guard let fontURL = bundle.url(forResource: fontName, withExtension: fontExtension) else {
+//            fatalError("Couldn't find font \(fontName)")
+//        }
+//
+//        guard let fontDataProvider = CGDataProvider(url: fontURL as CFURL) else {
+//            fatalError("Couldn't load data from the font \(fontName)")
+//        }
+//
+//        guard let font = CGFont(fontDataProvider) else {
+//            fatalError("Couldn't create font from data")
+//        }
+//
+//        var error: Unmanaged<CFError>?
+//        let success = CTFontManagerRegisterGraphicsFont(font, &error)
+//        guard success else {
+//            print("Error registering font: \(fontName). Maybe it was already registered.")
+//            return false
+//        }
+//
+//        return true
+//    }
+//}
+
 struct CustomFontsPackage {
     var text = "Hello, World!"
 }