Port Homebrew::Cmd::Missing

Library/Homebrew/cmd/missing.rb

@@ -1,48 +1,46 @@
-# typed: true
+# typed: strict
 # frozen_string_literal: true
 
+require "abstract_command"
 require "formula"
 require "tab"
 require "diagnostic"
-require "cli/parser"
 
 module Homebrew
-  module_function
+  module Cmd
+    class Missing < AbstractCommand
+      cmd_args do
+        description <<~EOS
+          Check the given <formula> kegs for missing dependencies. If no <formula> are
+          provided, check all kegs. Will exit with a non-zero status if any kegs are found
+          to be missing dependencies.
+        EOS
+        comma_array "--hide",
+                    description: "Act as if none of the specified <hidden> are installed. <hidden> should be " \
+                                 "a comma-separated list of formulae."
 
-  sig { returns(CLI::Parser) }
-  def missing_args
-    Homebrew::CLI::Parser.new do
-      description <<~EOS
-        Check the given <formula> kegs for missing dependencies. If no <formula> are
-        provided, check all kegs. Will exit with a non-zero status if any kegs are found
-        to be missing dependencies.
-      EOS
-      comma_array "--hide",
-                  description: "Act as if none of the specified <hidden> are installed. <hidden> should be " \
-                               "a comma-separated list of formulae."
+        named_args :formula
+      end
 
-      named_args :formula
-    end
-  end
+      sig { override.void }
+      def run
+        return unless HOMEBREW_CELLAR.exist?
 
-  def missing
-    args = missing_args.parse
+        ff = if args.no_named?
+          Formula.installed.sort
+        else
+          args.named.to_resolved_formulae.sort
+        end
 
-    return unless HOMEBREW_CELLAR.exist?
+        ff.each do |f|
+          missing = f.missing_dependencies(hide: args.hide)
+          next if missing.empty?
 
-    ff = if args.no_named?
-      Formula.installed.sort
-    else
-      args.named.to_resolved_formulae.sort
-    end
-
-    ff.each do |f|
-      missing = f.missing_dependencies(hide: args.hide)
-      next if missing.empty?
-
-      Homebrew.failed = true
-      print "#{f}: " if ff.size > 1
-      puts missing.join(" ")
+          Homebrew.failed = true
+          print "#{f}: " if ff.size > 1
+          puts missing.join(" ")
+        end
+      end
     end
   end
 end

Library/Homebrew/test/cmd/missing_spec.rb

@@ -1,8 +1,9 @@
 # frozen_string_literal: true
 
+require "cmd/missing"
 require "cmd/shared_examples/args_parse"
 
-RSpec.describe "brew missing" do
+RSpec.describe Homebrew::Cmd::Missing do
   it_behaves_like "parseable arguments"
 
   it "prints missing dependencies", :integration_test do