Port Homebrew::DevCmd::Livecheck

Library/Homebrew/dev-cmd/livecheck.rb

@@ -1,17 +1,19 @@
 # typed: true
 # frozen_string_literal: true
 
+require "abstract_command"
 require "cli/parser"
 require "formula"
 require "livecheck/livecheck"
 require "livecheck/strategy"
 
 module Homebrew
-  module_function
+  module DevCmd
+    class LivecheckCmd < AbstractCommand
+      sig { returns(String) }
+      def self.command_name = "livecheck"
 
-  sig { returns(CLI::Parser) }
-  def livecheck_args
-    Homebrew::CLI::Parser.new do
+      cmd_args do
         description <<~EOS
           Check for newer versions of formulae and/or casks from upstream.
           If no formula or cask argument is passed, the list of formulae and
@@ -48,27 +50,9 @@ module Homebrew
 
         named_args [:formula, :cask], without_api: true
       end
-  end
-
-  def watchlist_path
-    @watchlist_path ||= begin
-      watchlist = File.expand_path(Homebrew::EnvConfig.livecheck_watchlist)
-
-      unless File.exist?(watchlist)
-        previous_default_watchlist = File.expand_path("~/.brew_livecheck_watchlist")
-        if File.exist?(previous_default_watchlist)
-          odisabled "~/.brew_livecheck_watchlist", "~/.homebrew/livecheck_watchlist.txt"
-          watchlist = previous_default_watchlist
-        end
-      end
-
-      watchlist
-    end
-  end
-
-  def livecheck
-    args = livecheck_args.parse
 
+      sig { override.void }
+      def run
         Homebrew.install_bundler_gems!(groups: ["livecheck"])
 
         all = args.eval_all?
@@ -80,7 +64,7 @@ module Homebrew
 
         formulae_and_casks_to_check = Homebrew.with_no_api_env do
           if args.tap
-        tap = Tap.fetch(args.tap)
+            tap = Tap.fetch(T.must(args.tap))
             formulae = args.cask? ? [] : tap.formula_files.map { |path| Formulary.factory(path) }
             casks = args.formula? ? [] : tap.cask_files.map { |path| Cask::CaskLoader.load(path) }
             formulae + casks
@@ -136,4 +120,24 @@ module Homebrew
 
         Livecheck.run_checks(formulae_and_casks_to_check, **options)
       end
+
+      private
+
+      def watchlist_path
+        @watchlist_path ||= begin
+          watchlist = File.expand_path(Homebrew::EnvConfig.livecheck_watchlist)
+
+          unless File.exist?(watchlist)
+            previous_default_watchlist = File.expand_path("~/.brew_livecheck_watchlist")
+            if File.exist?(previous_default_watchlist)
+              odisabled "~/.brew_livecheck_watchlist", "~/.homebrew/livecheck_watchlist.txt"
+              watchlist = previous_default_watchlist
+            end
+          end
+
+          watchlist
+        end
+      end
+    end
+  end
 end

Library/Homebrew/test/dev-cmd/livecheck_spec.rb

@@ -1,8 +1,9 @@
 # frozen_string_literal: true
 
 require "cmd/shared_examples/args_parse"
+require "dev-cmd/livecheck"
 
-RSpec.describe "brew livecheck" do
+RSpec.describe Homebrew::DevCmd::LivecheckCmd do
   it_behaves_like "parseable arguments"
 
   it "reports the latest version of a Formula", :integration_test, :needs_network do