Automatic update of RCT-Folly

scripts/react_native_pods.rb

@@ -87,6 +87,15 @@ def use_react_native! (options={})
     pod 'hermes-engine', '~> 0.9.0'
     pod 'libevent', '~> 2.1.12'
   end
+
+  pods_to_update = LocalPodspecPatch.pods_to_update(options)
+  if !pods_to_update.empty?
+    if Pod::Lockfile.public_instance_methods.include?(:detect_changes_with_podfile)
+      Pod::Lockfile.prepend(LocalPodspecPatch)
+    else
+      Pod::UI.warn "Automatically updating #{pods_to_update.join(", ")} has failed, please run `pod update #{pods_to_update.join(" ")} --no-repo-update` manually to fix the issue."
+    end
+  end
 end
 
 def use_flipper!(versions = {}, configurations: ['Debug'])
@@ -558,3 +567,46 @@ def __apply_Xcode_12_5_M1_post_install_workaround(installer)
   # See https://github.com/facebook/flipper/issues/834 for more details.
   `sed -i -e  $'s/__IPHONE_10_0/__IPHONE_12_0/' Pods/RCT-Folly/folly/portability/Time.h`
 end
+
+# Monkeypatch of `Pod::Lockfile` to ensure automatic update of dependencies integrated with a local podspec when their version changed.
+# This is necessary because local podspec dependencies must be otherwise manually updated.
+module LocalPodspecPatch
+  # Returns local podspecs whose versions differ from the one in the `react-native` package.
+  def self.pods_to_update(react_native_options)
+    prefix = react_native_options[:path] ||= "../node_modules/react-native"
+    @@local_podspecs = Dir.glob("#{prefix}/third-party-podspecs/*").map { |file| File.basename(file, ".podspec") }
+    @@local_podspecs = @@local_podspecs.select do |podspec_name|
+      # Read local podspec to determine the cached version
+      local_podspec_path = File.join(
+        Dir.pwd, "Pods/Local Podspecs/#{podspec_name}.podspec.json"
+      )
+
+      # Local podspec cannot be outdated if it does not exist, yet
+      next unless File.file?(local_podspec_path)
+
+      local_podspec = File.read(local_podspec_path)
+      local_podspec_json = JSON.parse(local_podspec)
+      local_version = local_podspec_json["version"]
+
+      # Read the version from a podspec from the `react-native` package
+      podspec_path = "#{prefix}/third-party-podspecs/#{podspec_name}.podspec"
+      current_podspec = Pod::Specification.from_file(podspec_path)
+
+      current_version = current_podspec.version.to_s
+      current_version != local_version
+    end
+    @@local_podspecs
+  end
+
+  # Patched `detect_changes_with_podfile` method
+  def detect_changes_with_podfile(podfile)
+    changes = super(podfile)
+    @@local_podspecs.each do |local_podspec|
+      next unless changes[:unchanged].include?(local_podspec)
+
+      changes[:unchanged].delete(local_podspec)
+      changes[:changed] << local_podspec
+    end
+    changes
+  end
+end