Refactor and add type signature for uses_from_macos.

Library/Homebrew/formula.rb

@@ -3369,8 +3369,14 @@ class Formula
     # On macOS this is a no-op (as we use the provided system libraries) unless
     # `:since` specifies a minimum macOS version.
     # On Linux this will act as {.depends_on}.
-    def uses_from_macos(dep, bounds = {})
+    sig {
-      specs.each { |spec| spec.uses_from_macos(dep, bounds) }
+      params(
+        dep:    String,
+        bounds: T.any(Symbol, T::Array[Symbol]),
+      ).void
+    }
+    def uses_from_macos(dep = T.unsafe(nil), **bounds)
+      specs.each { |spec| spec.uses_from_macos(*dep, **bounds) }
     end
 
     # @!attribute [w] option

Library/Homebrew/formulary.rb

@@ -234,12 +234,13 @@ module Formulary
       dep_json["uses_from_macos"]&.each_with_index do |dep, index|
         bounds = dep_json.fetch("uses_from_macos_bounds", [])[index].dup || {}
         bounds.deep_transform_keys!(&:to_sym)
-        bounds.deep_transform_values! { |val| val.is_a?(String) ? val.to_sym : val }
+        bounds.deep_transform_values!(&:to_sym)
 
         if dep.is_a?(Hash)
-          uses_from_macos dep.deep_transform_values(&:to_sym).merge(bounds)
+          dep.deep_transform_values!(&:to_sym)
+          uses_from_macos(**T.unsafe(dep.merge(bounds)))
         else
-          uses_from_macos dep, bounds
+          uses_from_macos dep, **bounds
         end
       end
     end

Library/Homebrew/software_spec.rb

@@ -186,16 +186,23 @@ class SoftwareSpec
     add_dep_option(dep) if dep
   end
 
-  def uses_from_macos(deps, bounds = {})
+  sig {
-    if deps.is_a?(Hash)
+    params(
-      bounds = deps.dup
+      dep:    String,
-      deps = [T.unsafe(bounds).shift].to_h
+      bounds: T.any(Symbol, T::Array[Symbol]),
+    ).void
+  }
+  def uses_from_macos(dep = T.unsafe(nil), **bounds)
+    bounds = bounds.dup
+
+    if dep
+      tags = []
+    else
+      dep, tags = bounds.shift
+      tags = [*tags]
     end
 
-    spec, tags = deps.is_a?(Hash) ? deps.first : deps
+    depends_on UsesFromMacOSDependency.new(dep, tags, bounds: bounds)
-    raise TypeError, "Dependency name must be a string!" unless spec.is_a?(String)
-
-    depends_on UsesFromMacOSDependency.new(spec, Array(tags), bounds: bounds)
   end
 
   # @deprecated