Enable strict typing in Tap

Library/Homebrew/dev-cmd/pr-pull.rb

@@ -207,7 +207,7 @@ module Homebrew
 
         if pull_request
           # This is a tap pull request and approving reviewers should also sign-off.
-          tap = Tap.from_path(git_repo.pathname)
+          tap = T.must(Tap.from_path(git_repo.pathname))
           review_trailers = GitHub.approved_reviews(tap.user, tap.full_name.split("/").last,
                                                     pull_request).map do |r|
             "Signed-off-by: #{r["name"]} <#{r["email"]}>"
@@ -253,7 +253,7 @@ module Homebrew
       }
       def determine_bump_subject(old_contents, new_contents, subject_path, reason: nil)
         subject_path = Pathname(subject_path)
-        tap          = Tap.from_path(subject_path)
+        tap          = T.must(Tap.from_path(subject_path))
         subject_name = subject_path.basename.to_s.chomp(".rb")
         is_cask      = subject_path.to_s.start_with?("#{tap.cask_dir}/")
         name         = is_cask ? "cask" : "formula"

Library/Homebrew/dev-cmd/tap-new.rb

@@ -41,8 +41,8 @@ module Homebrew
 
         titleized_user = tap.user.dup
         titleized_repository = tap.repository.dup
-        titleized_user[0] = titleized_user[0].upcase
-        titleized_repository[0] = titleized_repository[0].upcase
+        titleized_user[0] = T.must(titleized_user[0]).upcase
+        titleized_repository[0] = T.must(titleized_repository[0]).upcase
         # Duplicate assignment to silence `assigned but unused variable` warning
         root_url = root_url = GitHubPackages.root_url(tap.user, "homebrew-#{tap.repository}") if args.github_packages?
 

Library/Homebrew/diagnostic.rb

@@ -548,7 +548,7 @@ module Homebrew
         core_cask_tap = CoreCaskTap.instance
         return unless core_cask_tap.installed?
 
-        broken_tap(core_cask_tap) || examine_git_origin(core_cask_tap.git_repository, core_cask_tap.remote)
+        broken_tap(core_cask_tap) || examine_git_origin(core_cask_tap.git_repository, T.must(core_cask_tap.remote))
       end
 
       sig { returns(T.nilable(String)) }