fix: use resource_bundles when FLUENT_ICONS_USE_RESOURCE_BUNDLES=1 (#839)

Author: wood1986

.gitignore

@@ -42,4 +42,6 @@ packages/react-native-icons/package-lock.json
 # Some Fluent tooling generates this for internal tracking assistance. Make sure it doesn't get committed.
 SvgList.txt
 
-.venv
+.venv
+
+.build

ios/FluentIcons.podspec

@@ -33,10 +33,19 @@ FluentIcons
   end
 
   s.subspec 'Assets' do |sp|
-    # Require this to be used as a dynamic framework
-    # `resource_bundles` are unable to load around 1 in a thousand times
-    # so we need to stick to `resources` here instead.
-    sp.resource = 'ios/FluentIcons/Assets/IconAssets.xcassets'
+    if ENV['FLUENT_ICONS_USE_RESOURCE_BUNDLES'] == '1'
+      sp.resource_bundles = {
+        'FluentIcons' => ['ios/FluentIcons/Assets/IconAssets.xcassets']
+      }
+      sp.pod_target_xcconfig = {
+        'OTHER_SWIFT_FLAGS' => '-DFLUENT_ICONS_USE_RESOURCE_BUNDLES'
+      }
+    else
+      # Require this to be used as a dynamic framework
+      # `resource_bundles` are unable to load around 1 in a thousand times
+      # so we need to stick to `resources` here instead.
+      sp.resource = 'ios/FluentIcons/Assets/IconAssets.xcassets'
+    end
   end
 
   s.subspec 'RemovalScript' do |sp|

ios/FluentIcons/Classes/Image+FluentIcon.swift

@@ -9,7 +9,11 @@ import AppKit
 private class FluentIconsBundleCheck {}
 
 public extension NSImage {
+#if FLUENT_ICONS_USE_RESOURCE_BUNDLES
+  @objc static let fluentIconBundle = Bundle(path: Bundle(for: FluentIconsBundleCheck.self).path(forResource: "FluentIcons", ofType: "bundle")!)
+#else
   @objc static let fluentIconBundle = Bundle(for: FluentIconsBundleCheck.self)
+#endif
 
   @objc static func fluentIcon(_ fluent: FluentIcon) -> NSImage {
     // Force unwrap here because the resource strings
@@ -31,7 +35,11 @@ import UIKit
 private class FluentIconsBundleCheck {}
 
 public extension UIImage {
+#if FLUENT_ICONS_USE_RESOURCE_BUNDLES
+  @objc static let fluentIconBundle = Bundle(path: Bundle(for: FluentIconsBundleCheck.self).path(forResource: "FluentIcons", ofType: "bundle")!)
+#else
   @objc static let fluentIconBundle = Bundle(for: FluentIconsBundleCheck.self)
+#endif
 
   @objc convenience init(fluent: FluentIcon) {
     // Force unwrap here because the resource strings