Enable frozen string in app/graphql + app/finders

Partially addresses #47424.

69 files changed, 138 insertions, 0 deletions

diff --git a/app/finders/access_requests_finder.rb b/app/finders/access_requests_finder.rb
index b6ee49df99b..2cc8a978877 100644
--- a/app/finders/access_requests_finder.rb
+++ b/app/finders/access_requests_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class AccessRequestsFinder
   attr_accessor :source
 
diff --git a/app/finders/admin/projects_finder.rb b/app/finders/admin/projects_finder.rb
index 543bf1a1415..5f622004190 100644
--- a/app/finders/admin/projects_finder.rb
+++ b/app/finders/admin/projects_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Admin::ProjectsFinder
   attr_reader :params, :current_user
 
diff --git a/app/finders/branches_finder.rb b/app/finders/branches_finder.rb
index 8bb1366867c..970efa79dfb 100644
--- a/app/finders/branches_finder.rb
+++ b/app/finders/branches_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class BranchesFinder
   def initialize(repository, params = {})
     @repository = repository
diff --git a/app/finders/clusters_finder.rb b/app/finders/clusters_finder.rb
index c13f98257bf..b40d6c41b71 100644
--- a/app/finders/clusters_finder.rb
+++ b/app/finders/clusters_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ClustersFinder
   def initialize(project, user, scope)
     @project = project
diff --git a/app/finders/concerns/created_at_filter.rb b/app/finders/concerns/created_at_filter.rb
index ac9ac77732c..6b5863a5c53 100644
--- a/app/finders/concerns/created_at_filter.rb
+++ b/app/finders/concerns/created_at_filter.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module CreatedAtFilter
   def by_created_at(items)
     items = items.created_before(params[:created_before]) if params[:created_before].present?
diff --git a/app/finders/concerns/custom_attributes_filter.rb b/app/finders/concerns/custom_attributes_filter.rb
index 5bbf9ca242d..80fad941ab1 100644
--- a/app/finders/concerns/custom_attributes_filter.rb
+++ b/app/finders/concerns/custom_attributes_filter.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module CustomAttributesFilter
   def by_custom_attributes(items)
     return items unless params[:custom_attributes].is_a?(Hash)
diff --git a/app/finders/concerns/finder_methods.rb b/app/finders/concerns/finder_methods.rb
index 2e905fa5750..998ca318133 100644
--- a/app/finders/concerns/finder_methods.rb
+++ b/app/finders/concerns/finder_methods.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module FinderMethods
   def find_by!(*args)
     raise_not_found_unless_authorized execute.find_by!(*args)
diff --git a/app/finders/concerns/finder_with_cross_project_access.rb b/app/finders/concerns/finder_with_cross_project_access.rb
index 92bf98d7cd2..220f62bcc7f 100644
--- a/app/finders/concerns/finder_with_cross_project_access.rb
+++ b/app/finders/concerns/finder_with_cross_project_access.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Module to prepend into finders to specify wether or not the finder requires
 # cross project access
 #
diff --git a/app/finders/contributed_projects_finder.rb b/app/finders/contributed_projects_finder.rb
index a685719555c..c3a6dd1d0f0 100644
--- a/app/finders/contributed_projects_finder.rb
+++ b/app/finders/contributed_projects_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ContributedProjectsFinder < UnionFinder
   def initialize(user)
     @user = user
diff --git a/app/finders/environments_finder.rb b/app/finders/environments_finder.rb
index a59f8c1efa3..b0f549c7a3e 100644
--- a/app/finders/environments_finder.rb
+++ b/app/finders/environments_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class EnvironmentsFinder
   attr_reader :project, :current_user, :params
 
diff --git a/app/finders/events_finder.rb b/app/finders/events_finder.rb
index 8676925a540..7db1cce3af4 100644
--- a/app/finders/events_finder.rb
+++ b/app/finders/events_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class EventsFinder
   prepend FinderMethods
   prepend FinderWithCrossProjectAccess
diff --git a/app/finders/fork_projects_finder.rb b/app/finders/fork_projects_finder.rb
index 28d1b31868e..b5068058c63 100644
--- a/app/finders/fork_projects_finder.rb
+++ b/app/finders/fork_projects_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ForkProjectsFinder < ProjectsFinder
   def initialize(project, params: {}, current_user: nil)
     project_ids = project.forks.includes(:creator).select(:id)
diff --git a/app/finders/group_descendants_finder.rb b/app/finders/group_descendants_finder.rb
index 2300b7fd114..9e2fd21f714 100644
--- a/app/finders/group_descendants_finder.rb
+++ b/app/finders/group_descendants_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # GroupDescendantsFinder
 #
 # Used to find and filter all subgroups and projects of a passed parent group
diff --git a/app/finders/group_finder.rb b/app/finders/group_finder.rb
index 24c84d2d1aa..5327fbed31d 100644
--- a/app/finders/group_finder.rb
+++ b/app/finders/group_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class GroupFinder
   include Gitlab::Allowable
 
diff --git a/app/finders/group_members_finder.rb b/app/finders/group_members_finder.rb
index 2a656c0d31c..49b78ff3823 100644
--- a/app/finders/group_members_finder.rb
+++ b/app/finders/group_members_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class GroupMembersFinder
   def initialize(group)
     @group = group
diff --git a/app/finders/group_projects_finder.rb b/app/finders/group_projects_finder.rb
index b6bdb2b7b0f..ed5e8f10007 100644
--- a/app/finders/group_projects_finder.rb
+++ b/app/finders/group_projects_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # GroupProjectsFinder
 #
 # Used to filter Projects  by set of params
diff --git a/app/finders/groups_finder.rb b/app/finders/groups_finder.rb
index 0eeba1d2428..8bde8e3b102 100644
--- a/app/finders/groups_finder.rb
+++ b/app/finders/groups_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # GroupsFinder
 #
 # Used to filter Groups by a set of params
diff --git a/app/finders/issuable_finder.rb b/app/finders/issuable_finder.rb
index 372e2a96c2c..aa00b9e1f72 100644
--- a/app/finders/issuable_finder.rb
+++ b/app/finders/issuable_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # IssuableFinder
 #
 # Used to filter Issues and MergeRequests collections by set of params
diff --git a/app/finders/issues_finder.rb b/app/finders/issues_finder.rb
index 24a6b9349a0..e92b3805cc8 100644
--- a/app/finders/issues_finder.rb
+++ b/app/finders/issues_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Finders::Issues class
 #
 # Used to filter Issues collections by set of params
diff --git a/app/finders/joined_groups_finder.rb b/app/finders/joined_groups_finder.rb
index 47174980258..18cc6891ca4 100644
--- a/app/finders/joined_groups_finder.rb
+++ b/app/finders/joined_groups_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class JoinedGroupsFinder < UnionFinder
   def initialize(user)
     @user = user
diff --git a/app/finders/labels_finder.rb b/app/finders/labels_finder.rb
index 8418577dab2..41497372971 100644
--- a/app/finders/labels_finder.rb
+++ b/app/finders/labels_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class LabelsFinder < UnionFinder
   prepend FinderWithCrossProjectAccess
   include FinderMethods
diff --git a/app/finders/license_template_finder.rb b/app/finders/license_template_finder.rb
index fad33f0eca2..196922709f7 100644
--- a/app/finders/license_template_finder.rb
+++ b/app/finders/license_template_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # LicenseTemplateFinder
 #
 # Used to find license templates, which may come from a variety of external
diff --git a/app/finders/members_finder.rb b/app/finders/members_finder.rb
index 4c893ae2de6..d0891893056 100644
--- a/app/finders/members_finder.rb
+++ b/app/finders/members_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class MembersFinder
   attr_reader :project, :current_user, :group
 
diff --git a/app/finders/merge_request_target_project_finder.rb b/app/finders/merge_request_target_project_finder.rb
index 188ec447a94..39b7f6af043 100644
--- a/app/finders/merge_request_target_project_finder.rb
+++ b/app/finders/merge_request_target_project_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class MergeRequestTargetProjectFinder
   include FinderMethods
 
diff --git a/app/finders/merge_requests_finder.rb b/app/finders/merge_requests_finder.rb
index 40089c082c1..0ca3319464a 100644
--- a/app/finders/merge_requests_finder.rb
+++ b/app/finders/merge_requests_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Finders::MergeRequest class
 #
 # Used to filter MergeRequests collections by set of params
diff --git a/app/finders/milestones_finder.rb b/app/finders/milestones_finder.rb
index f5d2b9f253a..68375f52c53 100644
--- a/app/finders/milestones_finder.rb
+++ b/app/finders/milestones_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Search for milestones
 #
 # params - Hash
diff --git a/app/finders/notes_finder.rb b/app/finders/notes_finder.rb
index 9b7a35fb3b5..5730da28f7b 100644
--- a/app/finders/notes_finder.rb
+++ b/app/finders/notes_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class NotesFinder
   FETCH_OVERLAP = 5.seconds
 
diff --git a/app/finders/personal_access_tokens_finder.rb b/app/finders/personal_access_tokens_finder.rb
index d975f354a88..63e55415f5c 100644
--- a/app/finders/personal_access_tokens_finder.rb
+++ b/app/finders/personal_access_tokens_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class PersonalAccessTokensFinder
   attr_accessor :params
 
diff --git a/app/finders/personal_projects_finder.rb b/app/finders/personal_projects_finder.rb
index a56a3a1e1a9..e0dd001f649 100644
--- a/app/finders/personal_projects_finder.rb
+++ b/app/finders/personal_projects_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class PersonalProjectsFinder < UnionFinder
   include Gitlab::Allowable
 
diff --git a/app/finders/pipeline_schedules_finder.rb b/app/finders/pipeline_schedules_finder.rb
index 2ac4289fbbe..a7886b6630c 100644
--- a/app/finders/pipeline_schedules_finder.rb
+++ b/app/finders/pipeline_schedules_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class PipelineSchedulesFinder
   attr_reader :project, :pipeline_schedules
 
diff --git a/app/finders/pipelines_finder.rb b/app/finders/pipelines_finder.rb
index a99a889a7e9..90af548b6c1 100644
--- a/app/finders/pipelines_finder.rb
+++ b/app/finders/pipelines_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class PipelinesFinder
   attr_reader :project, :pipelines, :params, :current_user
 
diff --git a/app/finders/projects_finder.rb b/app/finders/projects_finder.rb
index cac6643eff3..8d0b2cfef20 100644
--- a/app/finders/projects_finder.rb
+++ b/app/finders/projects_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # ProjectsFinder
 #
 # Used to filter Projects  by set of params
diff --git a/app/finders/runner_jobs_finder.rb b/app/finders/runner_jobs_finder.rb
index 52340f94523..c8d3c42a3a4 100644
--- a/app/finders/runner_jobs_finder.rb
+++ b/app/finders/runner_jobs_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class RunnerJobsFinder
   attr_reader :runner, :params
 
diff --git a/app/finders/snippets_finder.rb b/app/finders/snippets_finder.rb
index 9d3772d7541..ba4fb52ed1b 100644
--- a/app/finders/snippets_finder.rb
+++ b/app/finders/snippets_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Snippets Finder
 #
 # Used to filter Snippets collections by a set of params
diff --git a/app/finders/tags_finder.rb b/app/finders/tags_finder.rb
index b474f0805dc..2ffd46245e9 100644
--- a/app/finders/tags_finder.rb
+++ b/app/finders/tags_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class TagsFinder
   def initialize(repository, params)
     @repository = repository
diff --git a/app/finders/template_finder.rb b/app/finders/template_finder.rb
index ea0251bffb6..0dfbbbcce0c 100644
--- a/app/finders/template_finder.rb
+++ b/app/finders/template_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class TemplateFinder
   VENDORED_TEMPLATES = {
     dockerfiles: ::Gitlab::Template::DockerfileTemplate,
diff --git a/app/finders/todos_finder.rb b/app/finders/todos_finder.rb
index 6e9c8ea6fde..0fe0a3cf526 100644
--- a/app/finders/todos_finder.rb
+++ b/app/finders/todos_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # TodosFinder
 #
 # Used to filter Todos by set of params
diff --git a/app/finders/union_finder.rb b/app/finders/union_finder.rb
index 33cd1a491f3..40c63dfd10b 100644
--- a/app/finders/union_finder.rb
+++ b/app/finders/union_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class UnionFinder
   def find_union(segments, klass)
     if segments.length > 1
diff --git a/app/finders/user_recent_events_finder.rb b/app/finders/user_recent_events_finder.rb
index b874f6959c9..c3606ab71f6 100644
--- a/app/finders/user_recent_events_finder.rb
+++ b/app/finders/user_recent_events_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Get user activity feed for projects common for a user and a logged in user
 #
 # - current_user: The user viewing the events
diff --git a/app/finders/users_finder.rb b/app/finders/users_finder.rb
index 65824a51919..ad0b95a33b6 100644
--- a/app/finders/users_finder.rb
+++ b/app/finders/users_finder.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # UsersFinder
 #
 # Used to filter users by set of params
diff --git a/app/graphql/functions/base_function.rb b/app/graphql/functions/base_function.rb
index 42fb8f99acc..2512ecbd255 100644
--- a/app/graphql/functions/base_function.rb
+++ b/app/graphql/functions/base_function.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Functions
   class BaseFunction < GraphQL::Function
   end
diff --git a/app/graphql/functions/echo.rb b/app/graphql/functions/echo.rb
index e5bf109b8d7..3104486faac 100644
--- a/app/graphql/functions/echo.rb
+++ b/app/graphql/functions/echo.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Functions
   class Echo < BaseFunction
     argument :text, GraphQL::STRING_TYPE
diff --git a/app/graphql/gitlab_schema.rb b/app/graphql/gitlab_schema.rb
index 8755a1a62e7..06d26309b5b 100644
--- a/app/graphql/gitlab_schema.rb
+++ b/app/graphql/gitlab_schema.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class GitlabSchema < GraphQL::Schema
   use BatchLoader::GraphQL
   use Gitlab::Graphql::Authorize
diff --git a/app/graphql/mutations/concerns/mutations/resolves_project.rb b/app/graphql/mutations/concerns/mutations/resolves_project.rb
index 0dd1f264a52..da9814e88b0 100644
--- a/app/graphql/mutations/concerns/mutations/resolves_project.rb
+++ b/app/graphql/mutations/concerns/mutations/resolves_project.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Mutations
   module ResolvesProject
     extend ActiveSupport::Concern
diff --git a/app/graphql/mutations/merge_requests/base.rb b/app/graphql/mutations/merge_requests/base.rb
index 2149e72e2df..54f01c99d78 100644
--- a/app/graphql/mutations/merge_requests/base.rb
+++ b/app/graphql/mutations/merge_requests/base.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Mutations
   module MergeRequests
     class Base < BaseMutation
diff --git a/app/graphql/resolvers/base_resolver.rb b/app/graphql/resolvers/base_resolver.rb
index 89b7f9dad6f..459933af9d3 100644
--- a/app/graphql/resolvers/base_resolver.rb
+++ b/app/graphql/resolvers/base_resolver.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Resolvers
   class BaseResolver < GraphQL::Schema::Resolver
   end
diff --git a/app/graphql/resolvers/concerns/resolves_pipelines.rb b/app/graphql/resolvers/concerns/resolves_pipelines.rb
index 9ec45378d8e..8fd26d85994 100644
--- a/app/graphql/resolvers/concerns/resolves_pipelines.rb
+++ b/app/graphql/resolvers/concerns/resolves_pipelines.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ResolvesPipelines
   extend ActiveSupport::Concern
 
diff --git a/app/graphql/resolvers/full_path_resolver.rb b/app/graphql/resolvers/full_path_resolver.rb
index 4eb28aaed6c..8d3da33e8d2 100644
--- a/app/graphql/resolvers/full_path_resolver.rb
+++ b/app/graphql/resolvers/full_path_resolver.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Resolvers
   module FullPathResolver
     extend ActiveSupport::Concern
diff --git a/app/graphql/resolvers/merge_request_pipelines_resolver.rb b/app/graphql/resolvers/merge_request_pipelines_resolver.rb
index 00b51ee1381..b371f1335f8 100644
--- a/app/graphql/resolvers/merge_request_pipelines_resolver.rb
+++ b/app/graphql/resolvers/merge_request_pipelines_resolver.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Resolvers
   class MergeRequestPipelinesResolver < BaseResolver
     include ::ResolvesPipelines
diff --git a/app/graphql/resolvers/merge_request_resolver.rb b/app/graphql/resolvers/merge_request_resolver.rb
index 9f2d348e95f..326a5097757 100644
--- a/app/graphql/resolvers/merge_request_resolver.rb
+++ b/app/graphql/resolvers/merge_request_resolver.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Resolvers
   class MergeRequestResolver < BaseResolver
     argument :iid, GraphQL::ID_TYPE,
diff --git a/app/graphql/resolvers/project_pipelines_resolver.rb b/app/graphql/resolvers/project_pipelines_resolver.rb
index 7f175a3b26c..86094c46c2a 100644
--- a/app/graphql/resolvers/project_pipelines_resolver.rb
+++ b/app/graphql/resolvers/project_pipelines_resolver.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Resolvers
   class ProjectPipelinesResolver < BaseResolver
     include ResolvesPipelines
diff --git a/app/graphql/resolvers/project_resolver.rb b/app/graphql/resolvers/project_resolver.rb
index ec115bad896..ac7c9b0ce2e 100644
--- a/app/graphql/resolvers/project_resolver.rb
+++ b/app/graphql/resolvers/project_resolver.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Resolvers
   class ProjectResolver < BaseResolver
     prepend FullPathResolver
diff --git a/app/graphql/types/base_enum.rb b/app/graphql/types/base_enum.rb
index b45a845f74f..cf43fea45e6 100644
--- a/app/graphql/types/base_enum.rb
+++ b/app/graphql/types/base_enum.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   class BaseEnum < GraphQL::Schema::Enum
   end
diff --git a/app/graphql/types/base_field.rb b/app/graphql/types/base_field.rb
index c5740a334d7..2b2ea64c00b 100644
--- a/app/graphql/types/base_field.rb
+++ b/app/graphql/types/base_field.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   class BaseField < GraphQL::Schema::Field
     prepend Gitlab::Graphql::Authorize
diff --git a/app/graphql/types/base_input_object.rb b/app/graphql/types/base_input_object.rb
index 309e336e6c8..aebed035d3b 100644
--- a/app/graphql/types/base_input_object.rb
+++ b/app/graphql/types/base_input_object.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   class BaseInputObject < GraphQL::Schema::InputObject
   end
diff --git a/app/graphql/types/base_interface.rb b/app/graphql/types/base_interface.rb
index 69e72dc5808..3451a195c33 100644
--- a/app/graphql/types/base_interface.rb
+++ b/app/graphql/types/base_interface.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   module BaseInterface
     include GraphQL::Schema::Interface
diff --git a/app/graphql/types/base_object.rb b/app/graphql/types/base_object.rb
index 754adf4c04d..82b78abd573 100644
--- a/app/graphql/types/base_object.rb
+++ b/app/graphql/types/base_object.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   class BaseObject < GraphQL::Schema::Object
     prepend Gitlab::Graphql::Present
diff --git a/app/graphql/types/base_scalar.rb b/app/graphql/types/base_scalar.rb
index c0aa38be239..719bc808f47 100644
--- a/app/graphql/types/base_scalar.rb
+++ b/app/graphql/types/base_scalar.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   class BaseScalar < GraphQL::Schema::Scalar
   end
diff --git a/app/graphql/types/base_union.rb b/app/graphql/types/base_union.rb
index 36337fc6ee5..30a5668c0bb 100644
--- a/app/graphql/types/base_union.rb
+++ b/app/graphql/types/base_union.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   class BaseUnion < GraphQL::Schema::Union
   end
diff --git a/app/graphql/types/ci/pipeline_status_enum.rb b/app/graphql/types/ci/pipeline_status_enum.rb
index 2c12e5001d8..c19ddf5bb25 100644
--- a/app/graphql/types/ci/pipeline_status_enum.rb
+++ b/app/graphql/types/ci/pipeline_status_enum.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   module Ci
     class PipelineStatusEnum < BaseEnum
diff --git a/app/graphql/types/ci/pipeline_type.rb b/app/graphql/types/ci/pipeline_type.rb
index bbb7d9354d0..2bbffad4563 100644
--- a/app/graphql/types/ci/pipeline_type.rb
+++ b/app/graphql/types/ci/pipeline_type.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   module Ci
     class PipelineType < BaseObject
diff --git a/app/graphql/types/merge_request_type.rb b/app/graphql/types/merge_request_type.rb
index 88cd2adc6dc..fb740b6fb1c 100644
--- a/app/graphql/types/merge_request_type.rb
+++ b/app/graphql/types/merge_request_type.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   class MergeRequestType < BaseObject
     expose_permissions Types::PermissionTypes::MergeRequest
diff --git a/app/graphql/types/permission_types/base_permission_type.rb b/app/graphql/types/permission_types/base_permission_type.rb
index 934ed572e56..26a71e2bfbb 100644
--- a/app/graphql/types/permission_types/base_permission_type.rb
+++ b/app/graphql/types/permission_types/base_permission_type.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   module PermissionTypes
     class BasePermissionType < BaseObject
diff --git a/app/graphql/types/permission_types/ci/pipeline.rb b/app/graphql/types/permission_types/ci/pipeline.rb
index 942539c7cf7..73e44a33eba 100644
--- a/app/graphql/types/permission_types/ci/pipeline.rb
+++ b/app/graphql/types/permission_types/ci/pipeline.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   module PermissionTypes
     module Ci
diff --git a/app/graphql/types/permission_types/merge_request.rb b/app/graphql/types/permission_types/merge_request.rb
index 5c21f6ee9c6..13995d3ea8f 100644
--- a/app/graphql/types/permission_types/merge_request.rb
+++ b/app/graphql/types/permission_types/merge_request.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   module PermissionTypes
     class MergeRequest < BasePermissionType
diff --git a/app/graphql/types/permission_types/project.rb b/app/graphql/types/permission_types/project.rb
index 755699a4415..066ce64a254 100644
--- a/app/graphql/types/permission_types/project.rb
+++ b/app/graphql/types/permission_types/project.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   module PermissionTypes
     class Project < BasePermissionType
diff --git a/app/graphql/types/project_type.rb b/app/graphql/types/project_type.rb
index 97707215b4e..7b879608b34 100644
--- a/app/graphql/types/project_type.rb
+++ b/app/graphql/types/project_type.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   class ProjectType < BaseObject
     expose_permissions Types::PermissionTypes::Project
diff --git a/app/graphql/types/query_type.rb b/app/graphql/types/query_type.rb
index 010ec2d7942..7c41716b82a 100644
--- a/app/graphql/types/query_type.rb
+++ b/app/graphql/types/query_type.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   class QueryType < BaseObject
     graphql_name 'Query'
diff --git a/app/graphql/types/time_type.rb b/app/graphql/types/time_type.rb
index 2333d82ad1e..f045a50e672 100644
--- a/app/graphql/types/time_type.rb
+++ b/app/graphql/types/time_type.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Types
   class TimeType < BaseScalar
     graphql_name 'Time'