Port Homebrew::Cmd::Developer

Library/Homebrew/cmd/developer.rb

@@ -1,14 +1,12 @@
-# typed: true
+# typed: strict
 # frozen_string_literal: true
 
-require "cli/parser"
+require "abstract_command"
 
 module Homebrew
-  module_function
-
-  sig { returns(CLI::Parser) }
-  def developer_args
-    Homebrew::CLI::Parser.new do
+  module Cmd
+    class Developer < AbstractCommand
+      cmd_args do
         description <<~EOS
           Control Homebrew's developer mode. When developer mode is enabled,
           `brew update` will update Homebrew to the latest commit on the `master`
@@ -23,11 +21,9 @@ module Homebrew
 
         named_args %w[state on off], max: 1
       end
-  end
-
-  def developer
-    args = developer_args.parse
 
+      sig { override.void }
+      def run
         env_vars = []
         env_vars << "HOMEBREW_DEVELOPER" if Homebrew::EnvConfig.developer?
         env_vars << "HOMEBREW_UPDATE_TO_TAG" if Homebrew::EnvConfig.update_to_tag?
@@ -38,7 +34,8 @@ module Homebrew
         case args.named.first
         when nil, "state"
           if env_vars.any?
-        puts "Developer mode is enabled because #{env_vars.to_sentence} #{(env_vars.count == 1) ? "is" : "are"} set."
+            verb = (env_vars.count == 1) ? "is" : "are"
+            puts "Developer mode is enabled because #{env_vars.to_sentence} #{verb} set."
           elsif Homebrew::Settings.read("devcmdrun") == "true"
             puts "Developer mode is enabled."
           else
@@ -53,4 +50,6 @@ module Homebrew
           raise UsageError, "unknown subcommand: #{args.named.first}"
         end
       end
+    end
+  end
 end

Library/Homebrew/test/cmd/developer_spec.rb

@@ -1,7 +1,8 @@
 # frozen_string_literal: true
 
+require "cmd/developer"
 require "cmd/shared_examples/args_parse"
 
-RSpec.describe "brew developer" do
+RSpec.describe Homebrew::Cmd::Developer do
   it_behaves_like "parseable arguments"
 end