Merge remote-tracking branch 'upstream/main' into develop

# Conflicts: # .github/workflows/build-image.yml # config/routes.rb # db/schema.rb # lib/mastodon/version.rb
2023-05-09 23:26:00 +02:00 · 2023-05-09 23:26:00 +02:00 · 9fe04326ea
parent 56079b0e1a f08f6d20e6
commit 9fe04326ea
461 changed files with 6401 additions and 3748 deletions
--- a/.github/workflows/build-nightly.yml
+++ b/.github/workflows/build-nightly.yml
@ -41,9 +41,15 @@ jobs:
          labels: |
            org.opencontainers.image.description=Nightly build image used for testing purposes

+      - name: Generate version suffix
+        id: version_vars
+        run: |
+          echo mastodon_version_suffix=+nightly-$(date +'%Y%m%d') >> $GITHUB_OUTPUT
+
      - uses: docker/build-push-action@v4
        with:
          context: .
+          build-args: MASTODON_VERSION_SUFFIX=${{ steps.version_vars.outputs.mastodon_version_suffix }}
          platforms: linux/amd64,linux/arm64
          provenance: false
          builder: ${{ steps.buildx.outputs.name }}
--- a/.github/workflows/lint-js.yml
+++ b/.github/workflows/lint-js.yml
@ -48,7 +48,7 @@ jobs:
        run: yarn --frozen-lockfile

      - name: ESLint
-        run: yarn test:lint:js
+        run: yarn test:lint:js --max-warnings 0

      - name: Typecheck
        run: yarn test:typecheck
--- a/.github/workflows/test-ruby.yml
+++ b/.github/workflows/test-ruby.yml
@ -9,7 +9,6 @@ on:
 env:
  BUNDLE_CLEAN: true
  BUNDLE_FROZEN: true
-  BUNDLE_WITHOUT: 'development production'

 concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
@ -19,8 +18,17 @@ jobs:
  build:
    runs-on: ubuntu-latest

+    strategy:
+      fail-fast: true
+      matrix:
+        mode:
+          - production
+          - test
    env:
-      RAILS_ENV: test
+      RAILS_ENV: ${{ matrix.mode }}
+      BUNDLE_WITH: ${{ matrix.mode }}
+      OTP_SECRET: precompile_placeholder
+      SECRET_KEY_BASE: precompile_placeholder

    steps:
      - uses: actions/checkout@v3
@ -50,6 +58,7 @@ jobs:
          ./bin/rails assets:precompile

      - uses: actions/upload-artifact@v3
+        if: matrix.mode == 'test'
        with:
          path: |-
            ./public/assets
@ -97,7 +106,7 @@ jobs:
      PAM_ENABLED: true
      PAM_DEFAULT_SERVICE: pam_test
      PAM_CONTROLLED_SERVICE: pam_test_controlled
-      BUNDLE_WITH: 'pam_authentication'
+      BUNDLE_WITH: 'pam_authentication test'
      CI_JOBS: ${{ matrix.ci_job }}/4

    strategy:
--- a/.profile
+++ b/.profile
@ -1 +1 @@
-LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/app/.apt/lib/x86_64-linux-gnu:/app/.apt/usr/lib/x86_64-linux-gnu/mesa:/app/.apt/usr/lib/x86_64-linux-gnu/pulseaudio
+LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/app/.apt/lib/x86_64-linux-gnu:/app/.apt/usr/lib/x86_64-linux-gnu/mesa:/app/.apt/usr/lib/x86_64-linux-gnu/pulseaudio:/app/.apt/usr/lib/x86_64-linux-gnu/openblas-pthread
--- a/.rubocop.yml
+++ b/.rubocop.yml
@ -65,6 +65,7 @@ Metrics/AbcSize:
 Metrics/BlockLength:
  CountAsOne: ['array', 'hash', 'heredoc', 'method_call']
  Exclude:
+    - 'config/routes.rb'
    - 'lib/mastodon/*_cli.rb'
    - 'lib/tasks/*.rake'
    - 'app/models/concerns/account_associations.rb'
@ -85,6 +86,7 @@ Metrics/BlockLength:
    - 'config/initializers/simple_form.rb'
    - 'config/navigation.rb'
    - 'config/routes.rb'
+    - 'config/routes/*.rb'
    - 'db/post_migrate/20221101190723_backfill_admin_action_logs.rb'
    - 'db/post_migrate/20221206114142_backfill_admin_action_logs_again.rb'
    - 'lib/paperclip/gif_transcoder.rb'
@ -130,6 +132,7 @@ Metrics/ClassLength:
    - 'app/services/activitypub/process_account_service.rb'
    - 'app/services/activitypub/process_status_update_service.rb'
    - 'app/services/backup_service.rb'
+    - 'app/services/bulk_import_service.rb'
    - 'app/services/delete_account_service.rb'
    - 'app/services/fan_out_on_write_service.rb'
    - 'app/services/fetch_link_card_service.rb'
@ -158,6 +161,11 @@ Metrics/MethodLength:
 Metrics/ModuleLength:
  CountAsOne: [array, heredoc]

+# Reason: Prevailing style is argument file paths
+# https://docs.rubocop.org/rubocop-rails/cops_rails.html#railsfilepath
+Rails/FilePath:
+  EnforcedStyle: arguments
+
 # Reason: Prevailing style uses numeric status codes, matches RSpec/Rails/HttpStatus
 # https://docs.rubocop.org/rubocop-rails/cops_rails.html#railshttpstatus
 Rails/HttpStatus:
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@ -21,13 +21,6 @@ Layout/ArgumentAlignment:
    - 'config/initializers/cors.rb'
    - 'config/initializers/session_store.rb'

-# This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: EnforcedStyle.
-# SupportedStyles: empty_lines, no_empty_lines
-Layout/EmptyLinesAroundBlockBody:
-  Exclude:
-    - 'config/routes.rb'
-
 # This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: AllowForAlignment, AllowBeforeTrailingComments, ForceEqualSignAlignment.
 Layout/ExtraSpacing:
@ -106,28 +99,6 @@ Lint/AmbiguousOperatorPrecedence:
  Exclude:
    - 'config/initializers/rack_attack.rb'

-# Configuration parameters: AllowedMethods.
-# AllowedMethods: enums
-Lint/ConstantDefinitionInBlock:
-  Exclude:
-    - 'spec/controllers/api/base_controller_spec.rb'
-    - 'spec/controllers/application_controller_spec.rb'
-    - 'spec/controllers/concerns/accountable_concern_spec.rb'
-    - 'spec/controllers/concerns/signature_verification_spec.rb'
-    - 'spec/lib/activitypub/adapter_spec.rb'
-    - 'spec/lib/connection_pool/shared_connection_pool_spec.rb'
-    - 'spec/lib/connection_pool/shared_timed_stack_spec.rb'
-    - 'spec/models/concerns/remotable_spec.rb'
-
-# Configuration parameters: IgnoreLiteralBranches, IgnoreConstantBranches.
-Lint/DuplicateBranch:
-  Exclude:
-    - 'app/lib/permalink_redirector.rb'
-    - 'app/models/account_statuses_filter.rb'
-    - 'app/validators/email_mx_validator.rb'
-    - 'app/validators/vote_validator.rb'
-    - 'lib/mastodon/maintenance_cli.rb'
-
 # Configuration parameters: AllowComments, AllowEmptyLambdas.
 Lint/EmptyBlock:
  Exclude:
@ -168,11 +139,6 @@ Lint/EmptyBlock:
    - 'spec/models/user_role_spec.rb'
    - 'spec/models/web/setting_spec.rb'

-# Configuration parameters: AllowComments.
-Lint/EmptyClass:
-  Exclude:
-    - 'spec/controllers/api/base_controller_spec.rb'
-
 Lint/NonLocalExitFromIterator:
  Exclude:
    - 'app/helpers/jsonld_helper.rb'
@ -228,6 +194,12 @@ Metrics/AbcSize:
  Exclude:
    - 'app/serializers/initial_state_serializer.rb'

+# Configuration parameters: CountComments, Max, CountAsOne, AllowedMethods, AllowedPatterns, inherit_mode.
+# AllowedMethods: refine
+Metrics/BlockLength:
+  Exclude:
+    - 'app/models/concerns/status_safe_reblog_insert.rb'
+
 # Configuration parameters: CountBlocks, Max.
 Metrics/BlockNesting:
  Exclude:
@ -305,42 +277,6 @@ Naming/VariableNumber:
    - 'spec/models/user_spec.rb'
    - 'spec/services/activitypub/fetch_featured_collection_service_spec.rb'

-# Configuration parameters: MinSize.
-Performance/CollectionLiteralInLoop:
-  Exclude:
-    - 'app/models/admin/appeal_filter.rb'
-    - 'app/models/admin/status_filter.rb'
-    - 'app/models/relationship_filter.rb'
-    - 'app/models/trends/preview_card_filter.rb'
-    - 'app/models/trends/status_filter.rb'
-    - 'app/presenters/status_relationships_presenter.rb'
-    - 'app/services/fetch_resource_service.rb'
-    - 'app/services/suspend_account_service.rb'
-    - 'app/services/unsuspend_account_service.rb'
-    - 'config/deploy.rb'
-    - 'lib/mastodon/media_cli.rb'
-
-# This cop supports unsafe autocorrection (--autocorrect-all).
-Performance/Count:
-  Exclude:
-    - 'app/lib/importer/accounts_index_importer.rb'
-    - 'app/lib/importer/tags_index_importer.rb'
-
-# This cop supports unsafe autocorrection (--autocorrect-all).
-# Configuration parameters: SafeMultiline.
-Performance/DeletePrefix:
-  Exclude:
-    - 'app/controllers/authorize_interactions_controller.rb'
-    - 'app/controllers/concerns/signature_verification.rb'
-    - 'app/controllers/intents_controller.rb'
-    - 'app/lib/activitypub/case_transform.rb'
-    - 'app/lib/permalink_redirector.rb'
-    - 'app/lib/webfinger_resource.rb'
-    - 'app/services/activitypub/fetch_remote_actor_service.rb'
-    - 'app/services/backup_service.rb'
-    - 'app/services/resolve_account_service.rb'
-    - 'app/services/tag_search_service.rb'
-
 # This cop supports unsafe autocorrection (--autocorrect-all).
 Performance/MapCompact:
  Exclude:
@ -360,46 +296,12 @@ Performance/MapCompact:
    - 'db/migrate/20200407202420_migrate_unavailable_inboxes.rb'
    - 'spec/presenters/status_relationships_presenter_spec.rb'

-Performance/MethodObjectAsBlock:
-  Exclude:
-    - 'app/models/account_suggestions/source.rb'
-    - 'spec/models/export_spec.rb'
-
-# This cop supports unsafe autocorrection (--autocorrect-all).
-# Configuration parameters: AllowRegexpMatch.
-Performance/RedundantEqualityComparisonBlock:
-  Exclude:
-    - 'spec/requests/link_headers_spec.rb'
-
-# This cop supports unsafe autocorrection (--autocorrect-all).
-# Configuration parameters: MaxKeyValuePairs.
-Performance/RedundantMerge:
-  Exclude:
-    - 'config/initializers/paperclip.rb'
-
 # This cop supports unsafe autocorrection (--autocorrect-all).
 # Configuration parameters: SafeMultiline.
 Performance/StartWith:
  Exclude:
    - 'app/lib/extractor.rb'

-# This cop supports unsafe autocorrection (--autocorrect-all).
-# Configuration parameters: OnlySumOrWithInitialValue.
-Performance/Sum:
-  Exclude:
-    - 'app/lib/activity_tracker.rb'
-    - 'app/models/trends/history.rb'
-    - 'lib/paperclip/color_extractor.rb'
-
-# This cop supports unsafe autocorrection (--autocorrect-all).
-Performance/TimesMap:
-  Exclude:
-    - 'spec/controllers/api/v1/blocks_controller_spec.rb'
-    - 'spec/controllers/api/v1/mutes_controller_spec.rb'
-    - 'spec/lib/feed_manager_spec.rb'
-    - 'spec/lib/request_pool_spec.rb'
-    - 'spec/models/account_spec.rb'
-
 # This cop supports unsafe autocorrection (--autocorrect-all).
 Performance/UnfreezeString:
  Exclude:
@ -428,116 +330,6 @@ RSpec/AnyInstance:
    - 'spec/workers/activitypub/delivery_worker_spec.rb'
    - 'spec/workers/web/push_notification_worker_spec.rb'

-# Configuration parameters: Prefixes, AllowedPatterns.
-# Prefixes: when, with, without
-RSpec/ContextWording:
-  Exclude:
-    - 'spec/config/initializers/rack_attack_spec.rb'
-    - 'spec/controllers/accounts_controller_spec.rb'
-    - 'spec/controllers/activitypub/collections_controller_spec.rb'
-    - 'spec/controllers/activitypub/inboxes_controller_spec.rb'
-    - 'spec/controllers/admin/domain_blocks_controller_spec.rb'
-    - 'spec/controllers/admin/reports/actions_controller_spec.rb'
-    - 'spec/controllers/admin/statuses_controller_spec.rb'
-    - 'spec/controllers/api/v1/accounts/relationships_controller_spec.rb'
-    - 'spec/controllers/api/v1/accounts_controller_spec.rb'
-    - 'spec/controllers/api/v1/admin/domain_blocks_controller_spec.rb'
-    - 'spec/controllers/api/v1/emails/confirmations_controller_spec.rb'
-    - 'spec/controllers/api/v1/instances/activity_controller_spec.rb'
-    - 'spec/controllers/api/v1/instances/peers_controller_spec.rb'
-    - 'spec/controllers/api/v1/media_controller_spec.rb'
-    - 'spec/controllers/api/v2/filters_controller_spec.rb'
-    - 'spec/controllers/application_controller_spec.rb'
-    - 'spec/controllers/auth/registrations_controller_spec.rb'
-    - 'spec/controllers/auth/sessions_controller_spec.rb'
-    - 'spec/controllers/concerns/cache_concern_spec.rb'
-    - 'spec/controllers/concerns/challengable_concern_spec.rb'
-    - 'spec/controllers/concerns/localized_spec.rb'
-    - 'spec/controllers/concerns/rate_limit_headers_spec.rb'
-    - 'spec/controllers/instance_actors_controller_spec.rb'
-    - 'spec/controllers/settings/applications_controller_spec.rb'
-    - 'spec/controllers/settings/two_factor_authentication/webauthn_credentials_controller_spec.rb'
-    - 'spec/controllers/statuses_controller_spec.rb'
-    - 'spec/helpers/admin/account_moderation_notes_helper_spec.rb'
-    - 'spec/helpers/jsonld_helper_spec.rb'
-    - 'spec/helpers/routing_helper_spec.rb'
-    - 'spec/lib/activitypub/activity/accept_spec.rb'
-    - 'spec/lib/activitypub/activity/announce_spec.rb'
-    - 'spec/lib/activitypub/activity/create_spec.rb'
-    - 'spec/lib/activitypub/activity/follow_spec.rb'
-    - 'spec/lib/activitypub/activity/reject_spec.rb'
-    - 'spec/lib/advanced_text_formatter_spec.rb'
-    - 'spec/lib/emoji_formatter_spec.rb'
-    - 'spec/lib/entity_cache_spec.rb'
-    - 'spec/lib/feed_manager_spec.rb'
-    - 'spec/lib/html_aware_formatter_spec.rb'
-    - 'spec/lib/link_details_extractor_spec.rb'
-    - 'spec/lib/ostatus/tag_manager_spec.rb'
-    - 'spec/lib/scope_transformer_spec.rb'
-    - 'spec/lib/status_cache_hydrator_spec.rb'
-    - 'spec/lib/status_reach_finder_spec.rb'
-    - 'spec/lib/text_formatter_spec.rb'
-    - 'spec/models/account/field_spec.rb'
-    - 'spec/models/account_spec.rb'
-    - 'spec/models/admin/account_action_spec.rb'
-    - 'spec/models/concerns/account_interactions_spec.rb'
-    - 'spec/models/concerns/remotable_spec.rb'
-    - 'spec/models/custom_emoji_filter_spec.rb'
-    - 'spec/models/custom_emoji_spec.rb'
-    - 'spec/models/email_domain_block_spec.rb'
-    - 'spec/models/media_attachment_spec.rb'
-    - 'spec/models/notification_spec.rb'
-    - 'spec/models/remote_follow_spec.rb'
-    - 'spec/models/report_spec.rb'
-    - 'spec/models/session_activation_spec.rb'
-    - 'spec/models/setting_spec.rb'
-    - 'spec/models/status_spec.rb'
-    - 'spec/models/web/push_subscription_spec.rb'
-    - 'spec/policies/account_moderation_note_policy_spec.rb'
-    - 'spec/policies/account_policy_spec.rb'
-    - 'spec/policies/backup_policy_spec.rb'
-    - 'spec/policies/custom_emoji_policy_spec.rb'
-    - 'spec/policies/domain_block_policy_spec.rb'
-    - 'spec/policies/email_domain_block_policy_spec.rb'
-    - 'spec/policies/instance_policy_spec.rb'
-    - 'spec/policies/invite_policy_spec.rb'
-    - 'spec/policies/relay_policy_spec.rb'
-    - 'spec/policies/report_note_policy_spec.rb'
-    - 'spec/policies/report_policy_spec.rb'
-    - 'spec/policies/settings_policy_spec.rb'
-    - 'spec/policies/tag_policy_spec.rb'
-    - 'spec/policies/user_policy_spec.rb'
-    - 'spec/presenters/account_relationships_presenter_spec.rb'
-    - 'spec/presenters/status_relationships_presenter_spec.rb'
-    - 'spec/services/account_search_service_spec.rb'
-    - 'spec/services/account_statuses_cleanup_service_spec.rb'
-    - 'spec/services/activitypub/fetch_remote_status_service_spec.rb'
-    - 'spec/services/activitypub/process_account_service_spec.rb'
-    - 'spec/services/activitypub/process_status_update_service_spec.rb'
-    - 'spec/services/fetch_link_card_service_spec.rb'
-    - 'spec/services/fetch_oembed_service_spec.rb'
-    - 'spec/services/fetch_remote_status_service_spec.rb'
-    - 'spec/services/follow_service_spec.rb'
-    - 'spec/services/import_service_spec.rb'
-    - 'spec/services/notify_service_spec.rb'
-    - 'spec/services/process_mentions_service_spec.rb'
-    - 'spec/services/reblog_service_spec.rb'
-    - 'spec/services/report_service_spec.rb'
-    - 'spec/services/resolve_account_service_spec.rb'
-    - 'spec/services/resolve_url_service_spec.rb'
-    - 'spec/services/search_service_spec.rb'
-    - 'spec/services/unallow_domain_service_spec.rb'
-    - 'spec/services/verify_link_service_spec.rb'
-    - 'spec/validators/disallowed_hashtags_validator_spec.rb'
-    - 'spec/validators/email_mx_validator_spec.rb'
-    - 'spec/validators/follow_limit_validator_spec.rb'
-    - 'spec/validators/poll_validator_spec.rb'
-    - 'spec/validators/status_pin_validator_spec.rb'
-    - 'spec/validators/unreserved_username_validator_spec.rb'
-    - 'spec/validators/url_validator_spec.rb'
-    - 'spec/workers/move_worker_spec.rb'
-    - 'spec/workers/scheduler/accounts_statuses_cleanup_scheduler_spec.rb'
-
 # This cop supports unsafe autocorrection (--autocorrect-all).
 # Configuration parameters: SkipBlocks, EnforcedStyle.
 # SupportedStyles: described_class, explicit
@ -701,7 +493,6 @@ RSpec/InstanceVariable:
    - 'spec/controllers/statuses_cleanup_controller_spec.rb'
    - 'spec/models/concerns/account_finder_concern_spec.rb'
    - 'spec/models/concerns/account_interactions_spec.rb'
-    - 'spec/models/concerns/remotable_spec.rb'
    - 'spec/models/public_feed_spec.rb'
    - 'spec/serializers/activitypub/note_serializer_spec.rb'
    - 'spec/serializers/activitypub/update_poll_serializer_spec.rb'
@ -709,17 +500,6 @@ RSpec/InstanceVariable:
    - 'spec/services/search_service_spec.rb'
    - 'spec/services/unblock_domain_service_spec.rb'

-RSpec/LeakyConstantDeclaration:
-  Exclude:
-    - 'spec/controllers/api/base_controller_spec.rb'
-    - 'spec/controllers/application_controller_spec.rb'
-    - 'spec/controllers/concerns/accountable_concern_spec.rb'
-    - 'spec/controllers/concerns/signature_verification_spec.rb'
-    - 'spec/lib/activitypub/adapter_spec.rb'
-    - 'spec/lib/connection_pool/shared_connection_pool_spec.rb'
-    - 'spec/lib/connection_pool/shared_timed_stack_spec.rb'
-    - 'spec/models/concerns/remotable_spec.rb'
-
 RSpec/LetSetup:
  Exclude:
    - 'spec/controllers/admin/accounts_controller_spec.rb'
@ -745,6 +525,7 @@ RSpec/LetSetup:
    - 'spec/controllers/following_accounts_controller_spec.rb'
    - 'spec/controllers/oauth/authorized_applications_controller_spec.rb'
    - 'spec/controllers/oauth/tokens_controller_spec.rb'
+    - 'spec/controllers/settings/imports_controller_spec.rb'
    - 'spec/lib/activitypub/activity/delete_spec.rb'
    - 'spec/lib/vacuum/preview_cards_vacuum_spec.rb'
    - 'spec/models/account_spec.rb'
@ -759,6 +540,7 @@ RSpec/LetSetup:
    - 'spec/services/activitypub/process_collection_service_spec.rb'
    - 'spec/services/batched_remove_status_service_spec.rb'
    - 'spec/services/block_domain_service_spec.rb'
+    - 'spec/services/bulk_import_service_spec.rb'
    - 'spec/services/delete_account_service_spec.rb'
    - 'spec/services/import_service_spec.rb'
    - 'spec/services/notify_service_spec.rb'
@ -831,17 +613,6 @@ RSpec/MultipleExpectations:
 RSpec/MultipleMemoizedHelpers:
  Max: 21

-# This cop supports safe autocorrection (--autocorrect).
-RSpec/MultipleSubjects:
-  Exclude:
-    - 'spec/controllers/activitypub/collections_controller_spec.rb'
-    - 'spec/controllers/activitypub/followers_synchronizations_controller_spec.rb'
-    - 'spec/controllers/activitypub/outboxes_controller_spec.rb'
-    - 'spec/controllers/api/web/embeds_controller_spec.rb'
-    - 'spec/controllers/emojis_controller_spec.rb'
-    - 'spec/controllers/follower_accounts_controller_spec.rb'
-    - 'spec/controllers/following_accounts_controller_spec.rb'
-
 # Configuration parameters: AllowedGroups.
 RSpec/NestedGroups:
  Max: 6
@ -867,181 +638,6 @@ RSpec/PredicateMatcher:
    - 'spec/models/user_spec.rb'
    - 'spec/services/post_status_service_spec.rb'

-# This cop supports unsafe autocorrection (--autocorrect-all).
-# Configuration parameters: Inferences.
-RSpec/Rails/InferredSpecType:
-  Exclude:
-    - 'spec/controllers/about_controller_spec.rb'
-    - 'spec/controllers/accounts_controller_spec.rb'
-    - 'spec/controllers/activitypub/collections_controller_spec.rb'
-    - 'spec/controllers/activitypub/followers_synchronizations_controller_spec.rb'
-    - 'spec/controllers/activitypub/inboxes_controller_spec.rb'
-    - 'spec/controllers/activitypub/outboxes_controller_spec.rb'
-    - 'spec/controllers/activitypub/replies_controller_spec.rb'
-    - 'spec/controllers/admin/account_moderation_notes_controller_spec.rb'
-    - 'spec/controllers/admin/accounts_controller_spec.rb'
-    - 'spec/controllers/admin/action_logs_controller_spec.rb'
-    - 'spec/controllers/admin/base_controller_spec.rb'
-    - 'spec/controllers/admin/change_emails_controller_spec.rb'
-    - 'spec/controllers/admin/confirmations_controller_spec.rb'
-    - 'spec/controllers/admin/dashboard_controller_spec.rb'
-    - 'spec/controllers/admin/disputes/appeals_controller_spec.rb'
-    - 'spec/controllers/admin/domain_allows_controller_spec.rb'
-    - 'spec/controllers/admin/domain_blocks_controller_spec.rb'
-    - 'spec/controllers/admin/email_domain_blocks_controller_spec.rb'
-    - 'spec/controllers/admin/export_domain_allows_controller_spec.rb'
-    - 'spec/controllers/admin/export_domain_blocks_controller_spec.rb'
-    - 'spec/controllers/admin/instances_controller_spec.rb'
-    - 'spec/controllers/admin/settings/branding_controller_spec.rb'
-    - 'spec/controllers/admin/tags_controller_spec.rb'
-    - 'spec/controllers/api/oembed_controller_spec.rb'
-    - 'spec/controllers/api/v1/accounts/pins_controller_spec.rb'
-    - 'spec/controllers/api/v1/accounts/search_controller_spec.rb'
-    - 'spec/controllers/api/v1/accounts_controller_spec.rb'
-    - 'spec/controllers/api/v1/admin/account_actions_controller_spec.rb'
-    - 'spec/controllers/api/v1/admin/accounts_controller_spec.rb'
-    - 'spec/controllers/api/v1/admin/domain_allows_controller_spec.rb'
-    - 'spec/controllers/api/v1/admin/domain_blocks_controller_spec.rb'
-    - 'spec/controllers/api/v1/admin/reports_controller_spec.rb'
-    - 'spec/controllers/api/v1/announcements/reactions_controller_spec.rb'
-    - 'spec/controllers/api/v1/announcements_controller_spec.rb'
-    - 'spec/controllers/api/v1/apps_controller_spec.rb'
-    - 'spec/controllers/api/v1/blocks_controller_spec.rb'
-    - 'spec/controllers/api/v1/bookmarks_controller_spec.rb'
-    - 'spec/controllers/api/v1/conversations_controller_spec.rb'
-    - 'spec/controllers/api/v1/custom_emojis_controller_spec.rb'
-    - 'spec/controllers/api/v1/domain_blocks_controller_spec.rb'
-    - 'spec/controllers/api/v1/emails/confirmations_controller_spec.rb'
-    - 'spec/controllers/api/v1/endorsements_controller_spec.rb'
-    - 'spec/controllers/api/v1/favourites_controller_spec.rb'
-    - 'spec/controllers/api/v1/filters_controller_spec.rb'
-    - 'spec/controllers/api/v1/follow_requests_controller_spec.rb'
-    - 'spec/controllers/api/v1/followed_tags_controller_spec.rb'
-    - 'spec/controllers/api/v1/instances/activity_controller_spec.rb'
-    - 'spec/controllers/api/v1/instances/peers_controller_spec.rb'
-    - 'spec/controllers/api/v1/instances_controller_spec.rb'
-    - 'spec/controllers/api/v1/lists_controller_spec.rb'
-    - 'spec/controllers/api/v1/markers_controller_spec.rb'
-    - 'spec/controllers/api/v1/media_controller_spec.rb'
-    - 'spec/controllers/api/v1/mutes_controller_spec.rb'
-    - 'spec/controllers/api/v1/notifications_controller_spec.rb'
-    - 'spec/controllers/api/v1/polls/votes_controller_spec.rb'
-    - 'spec/controllers/api/v1/polls_controller_spec.rb'
-    - 'spec/controllers/api/v1/reports_controller_spec.rb'
-    - 'spec/controllers/api/v1/statuses/favourited_by_accounts_controller_spec.rb'
-    - 'spec/controllers/api/v1/statuses/reblogged_by_accounts_controller_spec.rb'
-    - 'spec/controllers/api/v1/statuses_controller_spec.rb'
-    - 'spec/controllers/api/v1/suggestions_controller_spec.rb'
-    - 'spec/controllers/api/v1/tags_controller_spec.rb'
-    - 'spec/controllers/api/v1/trends/tags_controller_spec.rb'
-    - 'spec/controllers/api/v2/admin/accounts_controller_spec.rb'
-    - 'spec/controllers/api/v2/filters/keywords_controller_spec.rb'
-    - 'spec/controllers/api/v2/filters/statuses_controller_spec.rb'
-    - 'spec/controllers/api/v2/filters_controller_spec.rb'
-    - 'spec/controllers/api/v2/search_controller_spec.rb'
-    - 'spec/controllers/application_controller_spec.rb'
-    - 'spec/controllers/auth/challenges_controller_spec.rb'
-    - 'spec/controllers/auth/confirmations_controller_spec.rb'
-    - 'spec/controllers/auth/passwords_controller_spec.rb'
-    - 'spec/controllers/auth/registrations_controller_spec.rb'
-    - 'spec/controllers/auth/sessions_controller_spec.rb'
-    - 'spec/controllers/concerns/account_controller_concern_spec.rb'
-    - 'spec/controllers/concerns/cache_concern_spec.rb'
-    - 'spec/controllers/concerns/challengable_concern_spec.rb'
-    - 'spec/controllers/concerns/export_controller_concern_spec.rb'
-    - 'spec/controllers/concerns/localized_spec.rb'
-    - 'spec/controllers/concerns/signature_verification_spec.rb'
-    - 'spec/controllers/concerns/user_tracking_concern_spec.rb'
-    - 'spec/controllers/disputes/appeals_controller_spec.rb'
-    - 'spec/controllers/disputes/strikes_controller_spec.rb'
-    - 'spec/controllers/home_controller_spec.rb'
-    - 'spec/controllers/instance_actors_controller_spec.rb'
-    - 'spec/controllers/intents_controller_spec.rb'
-    - 'spec/controllers/oauth/authorizations_controller_spec.rb'
-    - 'spec/controllers/oauth/tokens_controller_spec.rb'
-    - 'spec/controllers/settings/imports_controller_spec.rb'
-    - 'spec/controllers/settings/profiles_controller_spec.rb'
-    - 'spec/controllers/statuses_cleanup_controller_spec.rb'
-    - 'spec/controllers/tags_controller_spec.rb'
-    - 'spec/controllers/well_known/host_meta_controller_spec.rb'
-    - 'spec/controllers/well_known/nodeinfo_controller_spec.rb'
-    - 'spec/controllers/well_known/webfinger_controller_spec.rb'
-    - 'spec/helpers/accounts_helper_spec.rb'
-    - 'spec/helpers/admin/account_moderation_notes_helper_spec.rb'
-    - 'spec/helpers/admin/action_logs_helper_spec.rb'
-    - 'spec/helpers/flashes_helper_spec.rb'
-    - 'spec/helpers/formatting_helper_spec.rb'
-    - 'spec/helpers/home_helper_spec.rb'
-    - 'spec/helpers/routing_helper_spec.rb'
-    - 'spec/mailers/admin_mailer_spec.rb'
-    - 'spec/mailers/notification_mailer_spec.rb'
-    - 'spec/mailers/user_mailer_spec.rb'
-    - 'spec/models/account/field_spec.rb'
-    - 'spec/models/account_alias_spec.rb'
-    - 'spec/models/account_conversation_spec.rb'
-    - 'spec/models/account_deletion_request_spec.rb'
-    - 'spec/models/account_domain_block_spec.rb'
-    - 'spec/models/account_migration_spec.rb'
-    - 'spec/models/account_moderation_note_spec.rb'
-    - 'spec/models/account_spec.rb'
-    - 'spec/models/account_statuses_cleanup_policy_spec.rb'
-    - 'spec/models/admin/account_action_spec.rb'
-    - 'spec/models/admin/action_log_spec.rb'
-    - 'spec/models/announcement_mute_spec.rb'
-    - 'spec/models/announcement_reaction_spec.rb'
-    - 'spec/models/announcement_spec.rb'
-    - 'spec/models/backup_spec.rb'
-    - 'spec/models/block_spec.rb'
-    - 'spec/models/canonical_email_block_spec.rb'
-    - 'spec/models/conversation_mute_spec.rb'
-    - 'spec/models/conversation_spec.rb'
-    - 'spec/models/custom_emoji_spec.rb'
-    - 'spec/models/custom_filter_keyword_spec.rb'
-    - 'spec/models/custom_filter_spec.rb'
-    - 'spec/models/device_spec.rb'
-    - 'spec/models/domain_block_spec.rb'
-    - 'spec/models/email_domain_block_spec.rb'
-    - 'spec/models/encrypted_message_spec.rb'
-    - 'spec/models/favourite_spec.rb'
-    - 'spec/models/featured_tag_spec.rb'
-    - 'spec/models/follow_recommendation_suppression_spec.rb'
-    - 'spec/models/follow_request_spec.rb'
-    - 'spec/models/follow_spec.rb'
-    - 'spec/models/home_feed_spec.rb'
-    - 'spec/models/identity_spec.rb'
-    - 'spec/models/import_spec.rb'
-    - 'spec/models/invite_spec.rb'
-    - 'spec/models/list_account_spec.rb'
-    - 'spec/models/list_spec.rb'
-    - 'spec/models/login_activity_spec.rb'
-    - 'spec/models/media_attachment_spec.rb'
-    - 'spec/models/mention_spec.rb'
-    - 'spec/models/mute_spec.rb'
-    - 'spec/models/notification_spec.rb'
-    - 'spec/models/poll_vote_spec.rb'
-    - 'spec/models/preview_card_spec.rb'
-    - 'spec/models/preview_card_trend_spec.rb'
-    - 'spec/models/public_feed_spec.rb'
-    - 'spec/models/relay_spec.rb'
-    - 'spec/models/scheduled_status_spec.rb'
-    - 'spec/models/session_activation_spec.rb'
-    - 'spec/models/setting_spec.rb'
-    - 'spec/models/site_upload_spec.rb'
-    - 'spec/models/status_pin_spec.rb'
-    - 'spec/models/status_spec.rb'
-    - 'spec/models/status_stat_spec.rb'
-    - 'spec/models/status_trend_spec.rb'
-    - 'spec/models/system_key_spec.rb'
-    - 'spec/models/tag_follow_spec.rb'
-    - 'spec/models/unavailable_domain_spec.rb'
-    - 'spec/models/user_invite_request_spec.rb'
-    - 'spec/models/user_role_spec.rb'
-    - 'spec/models/user_spec.rb'
-    - 'spec/models/web/push_subscription_spec.rb'
-    - 'spec/models/web/setting_spec.rb'
-    - 'spec/models/webauthn_credentials_spec.rb'
-    - 'spec/models/webhook_spec.rb'
-
 RSpec/RepeatedExample:
  Exclude:
    - 'spec/policies/status_policy_spec.rb'
@ -1120,7 +716,6 @@ RSpec/VerifiedDoubles:
    - 'spec/controllers/api/web/embeds_controller_spec.rb'
    - 'spec/controllers/auth/sessions_controller_spec.rb'
    - 'spec/controllers/disputes/appeals_controller_spec.rb'
-    - 'spec/controllers/settings/imports_controller_spec.rb'
    - 'spec/helpers/statuses_helper_spec.rb'
    - 'spec/lib/suspicious_sign_in_detector_spec.rb'
    - 'spec/models/account/field_spec.rb'
@ -1148,19 +743,6 @@ RSpec/VerifiedDoubles:
    - 'spec/workers/feed_insert_worker_spec.rb'
    - 'spec/workers/regeneration_worker_spec.rb'

-# This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: Include.
-# Include: app/models/**/*.rb
-Rails/ActiveRecordCallbacksOrder:
-  Exclude:
-    - 'app/models/account.rb'
-    - 'app/models/account_conversation.rb'
-    - 'app/models/announcement_reaction.rb'
-    - 'app/models/block.rb'
-    - 'app/models/media_attachment.rb'
-    - 'app/models/session_activation.rb'
-    - 'app/models/status.rb'
-
 # This cop supports unsafe autocorrection (--autocorrect-all).
 Rails/ApplicationController:
  Exclude:
@ -1216,12 +798,6 @@ Rails/CreateTableWithTimestamps:
    - 'db/migrate/20220824233535_create_status_trends.rb'
    - 'db/migrate/20221006061337_create_preview_card_trends.rb'

-# This cop supports unsafe autocorrection (--autocorrect-all).
-# Configuration parameters: Severity.
-Rails/DeprecatedActiveModelErrorsMethods:
-  Exclude:
-    - 'lib/mastodon/accounts_cli.rb'
-
 # This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: Severity.
 Rails/DuplicateAssociation:
@ -1235,74 +811,6 @@ Rails/Exit:
  Exclude:
    - 'config/boot.rb'

-# Configuration parameters: EnforcedStyle.
-# SupportedStyles: slashes, arguments
-Rails/FilePath:
-  Exclude:
-    - 'app/lib/themes.rb'
-    - 'app/models/setting.rb'
-    - 'app/validators/reaction_validator.rb'
-    - 'config/environments/test.rb'
-    - 'config/initializers/locale.rb'
-    - 'db/migrate/20170716191202_add_hide_notifications_to_mute.rb'
-    - 'db/migrate/20171005171936_add_disabled_to_custom_emojis.rb'
-    - 'db/migrate/20171028221157_add_reblogs_to_follows.rb'
-    - 'db/migrate/20171107143332_add_memorial_to_accounts.rb'
-    - 'db/migrate/20171107143624_add_disabled_to_users.rb'
-    - 'db/migrate/20171109012327_add_moderator_to_accounts.rb'
-    - 'db/migrate/20171130000000_add_embed_url_to_preview_cards.rb'
-    - 'db/migrate/20180615122121_add_autofollow_to_invites.rb'
-    - 'db/migrate/20180707154237_add_whole_word_to_custom_filter.rb'
-    - 'db/migrate/20180814171349_add_confidential_to_doorkeeper_application.rb'
-    - 'db/migrate/20181010141500_add_silent_to_mentions.rb'
-    - 'db/migrate/20181017170937_add_reject_reports_to_domain_blocks.rb'
-    - 'db/migrate/20181018205649_add_unread_to_account_conversations.rb'
-    - 'db/migrate/20181127130500_identity_id_to_bigint.rb'
-    - 'db/migrate/20181127165847_add_show_replies_to_lists.rb'
-    - 'db/migrate/20190201012802_add_overwrite_to_imports.rb'
-    - 'db/migrate/20190306145741_add_lock_version_to_polls.rb'
-    - 'db/migrate/20190307234537_add_approved_to_users.rb'
-    - 'db/migrate/20191001213028_add_lock_version_to_account_stats.rb'
-    - 'db/migrate/20191212003415_increase_backup_size.rb'
-    - 'db/migrate/20200312144258_add_title_to_account_warning_presets.rb'
-    - 'db/migrate/20200620164023_add_fixed_lowercase_index_to_accounts.rb'
-    - 'db/migrate/20200917192924_add_notify_to_follows.rb'
-    - 'db/migrate/20201218054746_add_obfuscate_to_domain_blocks.rb'
-    - 'db/migrate/20210421121431_add_case_insensitive_btree_index_to_tags.rb'
-    - 'db/migrate/20211231080958_add_category_to_reports.rb'
-    - 'db/migrate/20220613110834_add_action_to_custom_filters.rb'
-    - 'db/post_migrate/20220307083603_optimize_null_index_conversations_uri.rb'
-    - 'db/post_migrate/20220310060545_optimize_null_index_statuses_in_reply_to_account_id.rb'
-    - 'db/post_migrate/20220310060556_optimize_null_index_statuses_in_reply_to_id.rb'
-    - 'db/post_migrate/20220310060614_optimize_null_index_media_attachments_scheduled_status_id.rb'
-    - 'db/post_migrate/20220310060626_optimize_null_index_media_attachments_shortcode.rb'
-    - 'db/post_migrate/20220310060641_optimize_null_index_users_reset_password_token.rb'
-    - 'db/post_migrate/20220310060653_optimize_null_index_users_created_by_application_id.rb'
-    - 'db/post_migrate/20220310060706_optimize_null_index_statuses_uri.rb'
-    - 'db/post_migrate/20220310060722_optimize_null_index_accounts_moved_to_account_id.rb'
-    - 'db/post_migrate/20220310060740_optimize_null_index_oauth_access_tokens_refresh_token.rb'
-    - 'db/post_migrate/20220310060750_optimize_null_index_accounts_url.rb'
-    - 'db/post_migrate/20220310060809_optimize_null_index_oauth_access_tokens_resource_owner_id.rb'
-    - 'db/post_migrate/20220310060833_optimize_null_index_announcement_reactions_custom_emoji_id.rb'
-    - 'db/post_migrate/20220310060854_optimize_null_index_appeals_approved_by_account_id.rb'
-    - 'db/post_migrate/20220310060913_optimize_null_index_account_migrations_target_account_id.rb'
-    - 'db/post_migrate/20220310060926_optimize_null_index_appeals_rejected_by_account_id.rb'
-    - 'db/post_migrate/20220310060939_optimize_null_index_list_accounts_follow_id.rb'
-    - 'db/post_migrate/20220310060959_optimize_null_index_web_push_subscriptions_access_token_id.rb'
-    - 'db/post_migrate/20220613110802_remove_whole_word_from_custom_filters.rb'
-    - 'db/post_migrate/20220613110903_remove_irreversible_from_custom_filters.rb'
-    - 'db/post_migrate/20220617202502_migrate_roles.rb'
-    - 'db/seeds.rb'
-    - 'db/seeds/03_roles.rb'
-    - 'lib/tasks/branding.rake'
-    - 'lib/tasks/emojis.rake'
-    - 'lib/tasks/repo.rake'
-    - 'spec/controllers/admin/custom_emojis_controller_spec.rb'
-    - 'spec/fabricators/custom_emoji_fabricator.rb'
-    - 'spec/fabricators/site_upload_fabricator.rb'
-    - 'spec/rails_helper.rb'
-    - 'spec/spec_helper.rb'
-
 # Configuration parameters: Include.
 # Include: app/models/**/*.rb
 Rails/HasAndBelongsToMany:
@ -1445,12 +953,30 @@ Rails/SkipsModelValidations:
    - 'spec/services/follow_service_spec.rb'
    - 'spec/services/update_account_service_spec.rb'

-Rails/TransactionExitStatement:
+# Configuration parameters: Include.
+# Include: db/**/*.rb
+Rails/ThreeStateBooleanColumn:
  Exclude:
-    - 'app/lib/activitypub/activity/announce.rb'
-    - 'app/lib/activitypub/activity/create.rb'
-    - 'app/lib/activitypub/activity/delete.rb'
-    - 'app/services/activitypub/process_account_service.rb'
+    - 'db/migrate/20160325130944_add_admin_to_users.rb'
+    - 'db/migrate/20161123093447_add_sensitive_to_statuses.rb'
+    - 'db/migrate/20170123203248_add_reject_media_to_domain_blocks.rb'
+    - 'db/migrate/20170127165745_add_devise_two_factor_to_users.rb'
+    - 'db/migrate/20170209184350_add_reply_to_statuses.rb'
+    - 'db/migrate/20170330163835_create_imports.rb'
+    - 'db/migrate/20170905165803_add_local_to_statuses.rb'
+    - 'db/migrate/20171210213213_add_local_only_flag_to_statuses.rb'
+    - 'db/migrate/20181203021853_add_discoverable_to_accounts.rb'
+    - 'db/migrate/20190509164208_add_by_moderator_to_tombstone.rb'
+    - 'db/migrate/20190805123746_add_capabilities_to_tags.rb'
+    - 'db/migrate/20191212163405_add_hide_collections_to_accounts.rb'
+    - 'db/migrate/20200309150742_add_forwarded_to_reports.rb'
+    - 'db/migrate/20210609202149_create_login_activities.rb'
+    - 'db/migrate/20210621221010_add_skip_sign_in_token_to_users.rb'
+    - 'db/migrate/20211031031021_create_preview_card_providers.rb'
+    - 'db/migrate/20211115032527_add_trendable_to_preview_cards.rb'
+    - 'db/migrate/20220202200743_add_trendable_to_accounts.rb'
+    - 'db/migrate/20220202200926_add_trendable_to_statuses.rb'
+    - 'db/migrate/20220303000827_add_ordered_media_attachment_ids_to_status_edits.rb'

 # Configuration parameters: Include.
 # Include: app/models/**/*.rb
@ -1519,12 +1045,6 @@ Style/CaseEquality:
  Exclude:
    - 'config/initializers/trusted_proxies.rb'

-# This cop supports unsafe autocorrection (--autocorrect-all).
-# Configuration parameters: MinBranchesCount.
-Style/CaseLikeIf:
-  Exclude:
-    - 'app/controllers/concerns/signature_verification.rb'
-
 # This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: AllowedMethods, AllowedPatterns.
 # AllowedMethods: ==, equal?, eql?
@ -1542,16 +1062,10 @@ Style/CombinableLoops:
    - 'app/models/form/custom_emoji_batch.rb'
    - 'app/models/form/ip_block_batch.rb'

-# This cop supports unsafe autocorrection (--autocorrect-all).
-Style/ConcatArrayLiterals:
-  Exclude:
-    - 'app/lib/feed_manager.rb'
-
 # This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: AllowedVars.
 Style/FetchEnvVar:
  Exclude:
-    - 'app/helpers/application_helper.rb'
    - 'app/lib/redis_configuration.rb'
    - 'app/lib/translation_service.rb'
    - 'config/environments/development.rb'
@ -2001,7 +1515,6 @@ Style/GuardClause:
    - 'app/controllers/auth/passwords_controller.rb'
    - 'app/controllers/settings/two_factor_authentication/webauthn_credentials_controller.rb'
    - 'app/lib/activitypub/activity/block.rb'
-    - 'app/lib/connection_pool/shared_connection_pool.rb'
    - 'app/lib/request.rb'
    - 'app/lib/request_pool.rb'
    - 'app/lib/webfinger.rb'
@ -2036,7 +1549,6 @@ Style/HashAsLastArrayItem:
  Exclude:
    - 'app/controllers/admin/statuses_controller.rb'
    - 'app/controllers/api/v1/statuses_controller.rb'
-    - 'app/models/account.rb'
    - 'app/models/concerns/account_counters.rb'
    - 'app/models/concerns/status_threading_concern.rb'
    - 'app/models/status.rb'
@ -2044,19 +1556,6 @@ Style/HashAsLastArrayItem:
    - 'app/services/notify_service.rb'
    - 'db/migrate/20181024224956_migrate_account_conversations.rb'

-# This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: EnforcedStyle, EnforcedShorthandSyntax, UseHashRocketsWithSymbolValues, PreferHashRocketsForNonAlnumEndingSymbols.
-# SupportedStyles: ruby19, hash_rockets, no_mixed_keys, ruby19_no_mixed_keys
-# SupportedShorthandSyntax: always, never, either, consistent
-Style/HashSyntax:
-  Exclude:
-    - 'app/helpers/application_helper.rb'
-    - 'app/models/media_attachment.rb'
-    - 'lib/terrapin/multi_pipe_extensions.rb'
-    - 'spec/controllers/admin/reports/actions_controller_spec.rb'
-    - 'spec/controllers/admin/statuses_controller_spec.rb'
-    - 'spec/controllers/concerns/signature_verification_spec.rb'
-
 # This cop supports unsafe autocorrection (--autocorrect-all).
 Style/HashTransformValues:
  Exclude:
@ -2074,22 +1573,8 @@ Style/IfUnlessModifier:
 # Configuration parameters: InverseMethods, InverseBlocks.
 Style/InverseMethods:
  Exclude:
-    - 'app/controllers/concerns/signature_verification.rb'
-    - 'app/helpers/jsonld_helper.rb'
-    - 'app/lib/activitypub/activity/create.rb'
-    - 'app/lib/activitypub/activity/move.rb'
-    - 'app/lib/feed_manager.rb'
-    - 'app/lib/link_details_extractor.rb'
-    - 'app/models/concerns/attachmentable.rb'
-    - 'app/models/concerns/remotable.rb'
    - 'app/models/custom_filter.rb'
-    - 'app/models/webhook.rb'
-    - 'app/services/activitypub/process_status_update_service.rb'
-    - 'app/services/fetch_link_card_service.rb'
-    - 'app/services/search_service.rb'
    - 'app/services/update_account_service.rb'
-    - 'app/workers/web/push_notification_worker.rb'
-    - 'lib/paperclip/color_extractor.rb'
    - 'spec/controllers/activitypub/replies_controller_spec.rb'

 # This cop supports safe autocorrection (--autocorrect).
@ -2110,12 +1595,10 @@ Style/MapToHash:
 # SupportedStyles: literals, strict
 Style/MutableConstant:
  Exclude:
-    - 'app/models/account.rb'
    - 'app/models/tag.rb'
    - 'app/services/delete_account_service.rb'
    - 'config/initializers/twitter_regex.rb'
    - 'lib/mastodon/migration_warning.rb'
-    - 'spec/controllers/api/base_controller_spec.rb'

 # This cop supports safe autocorrection (--autocorrect).
 Style/NilLambda:
@ -2199,7 +1682,6 @@ Style/RedundantRegexpEscape:
 Style/RegexpLiteral:
  Exclude:
    - 'app/lib/link_details_extractor.rb'
-    - 'app/lib/permalink_redirector.rb'
    - 'app/lib/plain_text_formatter.rb'
    - 'app/lib/tag_manager.rb'
    - 'app/lib/text_formatter.rb'
@ -2321,11 +1803,14 @@ Style/TrailingCommaInHashLiteral:
    - 'config/environments/test.rb'

 # This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: WordRegex.
+# Configuration parameters: EnforcedStyle, MinSize, WordRegex.
 # SupportedStyles: percent, brackets
 Style/WordArray:
-  EnforcedStyle: percent
-  MinSize: 6
+  Exclude:
+    - 'app/helpers/languages_helper.rb'
+    - 'config/initializers/cors.rb'
+    - 'spec/controllers/settings/imports_controller_spec.rb'
+    - 'spec/models/form/import_spec.rb'

 # This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, AllowedPatterns.
--- a/1
+++ b/1
@ -1,4 +1,5 @@
 ffmpeg
+libopenblas0-pthread
 libpq-dev
 libxdamage1
 libxfixes3
--- a/8
+++ b/8
@ -41,6 +41,10 @@ RUN apt-get update && \

 FROM node:${NODE_VERSION}

+# Use those args to specify your own version flags & suffixes
+ARG MASTODON_VERSION_FLAGS=""
+ARG MASTODON_VERSION_SUFFIX=""
+
 ARG UID="991"
 ARG GID="991"

@ -84,7 +88,9 @@ COPY --chown=mastodon:mastodon --from=build /opt/mastodon /opt/mastodon
 ENV RAILS_ENV="production" \
    NODE_ENV="production" \
    RAILS_SERVE_STATIC_FILES="true" \
-    BIND="0.0.0.0"
+    BIND="0.0.0.0" \
+    MASTODON_VERSION_FLAGS="${MASTODON_VERSION_FLAGS}" \
+    MASTODON_VERSION_SUFFIX="${MASTODON_VERSION_SUFFIX}"

 # Set the run user
 USER mastodon
--- a/6
+++ b/6
@ -30,10 +30,7 @@ gem 'browser'
 gem 'charlock_holmes', '~> 0.7.7'
 gem 'chewy', '~> 7.3'
 gem 'devise', '~> 4.9'
-# The below `v4.x` branch allows attr_encrypted 4.x, which is required for Rails 7.
-# Once a new gem version is pushed, we can go back to released gem and off of github branch.
-gem 'devise-two-factor', github: 'tinfoil/devise-two-factor', branch: 'v4.x'
-gem 'attr_encrypted', '~> 4.0'
+gem 'devise-two-factor', '~> 4.1'

 group :pam_authentication, optional: true do
  gem 'devise_pam_authenticatable2', '~> 9.2'
@ -164,3 +161,4 @@ gem 'hcaptcha', '~> 7.1'
 gem 'cocoon', '~> 1.2'

 gem 'net-http', '~> 0.3.2'
+gem 'rubyzip', '~> 2.3'
--- a/Gemfile.lock
+++ b/Gemfile.lock
@ -27,18 +27,6 @@ GIT
    rails-settings-cached (0.6.6)
      rails (>= 4.2.0)

-GIT
-  remote: https://github.com/tinfoil/devise-two-factor.git
-  revision: e685f91ce62d036259885fbe31fcb4fa930bcfcb
-  branch: v4.x
-  specs:
-    devise-two-factor (4.0.2)
-      activesupport (< 7.1)
-      attr_encrypted (>= 1.3, < 5, != 2)
-      devise (~> 4.0)
-      railties (< 7.1)
-      rotp (~> 6.0)
-
 GEM
  remote: https://rubygems.org/
  specs:
@ -218,6 +206,12 @@ GEM
      railties (>= 4.1.0)
      responders
      warden (~> 1.2.3)
+    devise-two-factor (4.1.0)
+      activesupport (< 7.1)
+      attr_encrypted (>= 1.3, < 5, != 2)
+      devise (~> 4.0)
+      railties (< 7.1)
+      rotp (~> 6.0)
    devise_pam_authenticatable2 (9.2.0)
      devise (>= 4.0.0)
      rpam2 (~> 4.0)
@ -354,15 +348,15 @@ GEM
    ipaddress (0.8.3)
    jmespath (1.6.2)
    json (2.6.3)
-    json-canonicalization (0.3.1)
+    json-canonicalization (0.3.2)
    json-jwt (1.15.3)
      activesupport (>= 4.2)
      aes_key_wrap
      bindata
      httpclient
-    json-ld (3.2.4)
+    json-ld (3.2.5)
      htmlentities (~> 4.3)
-      json-canonicalization (~> 0.3)
+      json-canonicalization (~> 0.3, >= 0.3.2)
      link_header (~> 0.0, >= 0.0.8)
      multi_json (~> 1.15)
      rack (>= 2.2, < 4)
@ -492,7 +486,7 @@ GEM
    parslet (2.0.0)
    pastel (0.8.0)
      tty-color (~> 0.5)
-    pg (1.5.2)
+    pg (1.5.3)
    pghero (3.3.3)
      activerecord (>= 6)
    pkg-config (1.5.1)
@ -626,7 +620,7 @@ GEM
    rubocop-performance (1.17.1)
      rubocop (>= 1.7.0, < 2.0)
      rubocop-ast (>= 0.4.0)
-    rubocop-rails (2.18.0)
+    rubocop-rails (2.19.1)
      activesupport (>= 4.2.0)
      rack (>= 1.1)
      rubocop (>= 1.33.0, < 2.0)
@ -638,6 +632,7 @@ GEM
      nokogiri (>= 1.13.10)
      rexml
    ruby2_keywords (0.0.5)
+    rubyzip (2.3.2)
    rufus-scheduler (3.8.2)
      fugit (~> 1.1, >= 1.1.6)
    safety_net_attestation (0.4.0)
@ -777,7 +772,6 @@ DEPENDENCIES
  active_model_serializers (~> 0.10)
  addressable (~> 2.8)
  annotate (~> 3.2)
-  attr_encrypted (~> 4.0)
  aws-sdk-s3 (~> 1.120)
  better_errors (~> 2.9)
  binding_of_caller (~> 1.0)
@ -799,7 +793,7 @@ DEPENDENCIES
  concurrent-ruby
  connection_pool
  devise (~> 4.9)
-  devise-two-factor!
+  devise-two-factor (~> 4.1)
  devise_pam_authenticatable2 (~> 9.2)
  discard (~> 1.2)
  doorkeeper (~> 5.6)
@ -879,6 +873,7 @@ DEPENDENCIES
  rubocop-rails
  rubocop-rspec
  ruby-progressbar (~> 1.13)
+  rubyzip (~> 2.3)
  sanitize (~> 6.0)
  scenic (~> 1.7)
  sidekiq (~> 6.5)
--- a/app/controllers/admin/domain_blocks_controller.rb
+++ b/app/controllers/admin/domain_blocks_controller.rb
@ -33,7 +33,7 @@ module Admin

      if existing_domain_block.present? && !@domain_block.stricter_than?(existing_domain_block)
        @domain_block.save
-        flash.now[:alert] = I18n.t('admin.domain_blocks.existing_domain_block_html', name: existing_domain_block.domain, unblock_url: admin_domain_block_path(existing_domain_block)).html_safe # rubocop:disable Rails/OutputSafety
+        flash.now[:alert] = I18n.t('admin.domain_blocks.existing_domain_block_html', name: existing_domain_block.domain, unblock_url: admin_domain_block_path(existing_domain_block)).html_safe
        @domain_block.errors.delete(:domain)
        render :new
      else
--- a/app/controllers/api/v1/media_controller.rb
+++ b/app/controllers/api/v1/media_controller.rb
@ -15,7 +15,8 @@ class Api::V1::MediaController < Api::BaseController
    render json: @media_attachment, serializer: REST::MediaAttachmentSerializer
  rescue Paperclip::Errors::NotIdentifiedByImageMagickError
    render json: file_type_error, status: 422
-  rescue Paperclip::Error
+  rescue Paperclip::Error => e
+    Rails.logger.error "#{e.class}: #{e.message}"
    render json: processing_error, status: 500
  end

--- a/app/controllers/api/v2/media_controller.rb
+++ b/app/controllers/api/v2/media_controller.rb
@ -6,7 +6,8 @@ class Api::V2::MediaController < Api::V1::MediaController
    render json: @media_attachment, serializer: REST::MediaAttachmentSerializer, status: @media_attachment.not_processed? ? 202 : 200
  rescue Paperclip::Errors::NotIdentifiedByImageMagickError
    render json: file_type_error, status: 422
-  rescue Paperclip::Error
+  rescue Paperclip::Error => e
+    Rails.logger.error "#{e.class}: #{e.message}"
    render json: processing_error, status: 500
  end
 end
--- a/app/controllers/authorize_interactions_controller.rb
+++ b/app/controllers/authorize_interactions_controller.rb
@ -60,7 +60,7 @@ class AuthorizeInteractionsController < ApplicationController
  end

  def uri_param
-    params[:uri] || params.fetch(:acct, '').gsub(/\Aacct:/, '')
+    params[:uri] || params.fetch(:acct, '').delete_prefix('acct:')
  end

  def set_body_classes
--- a/app/controllers/concerns/signature_verification.rb
+++ b/app/controllers/concerns/signature_verification.rb
@ -180,14 +180,15 @@ module SignatureVerification

  def build_signed_string
    signed_headers.map do |signed_header|
-      if signed_header == Request::REQUEST_TARGET
+      case signed_header
+      when Request::REQUEST_TARGET
        "#{Request::REQUEST_TARGET}: #{request.method.downcase} #{request.path}"
-      elsif signed_header == '(created)'
+      when '(created)'
        raise SignatureVerificationError, 'Invalid pseudo-header (created) for rsa-sha256' unless signature_algorithm == 'hs2019'
        raise SignatureVerificationError, 'Pseudo-header (created) used but corresponding argument missing' if signature_params['created'].blank?

        "(created): #{signature_params['created']}"
-      elsif signed_header == '(expires)'
+      when '(expires)'
        raise SignatureVerificationError, 'Invalid pseudo-header (expires) for rsa-sha256' unless signature_algorithm == 'hs2019'
        raise SignatureVerificationError, 'Pseudo-header (expires) used but corresponding argument missing' if signature_params['expires'].blank?

@ -244,7 +245,7 @@ module SignatureVerification
    end

    if key_id.start_with?('acct:')
-      stoplight_wrap_request { ResolveAccountService.new.call(key_id.gsub(/\Aacct:/, ''), suppress_errors: false) }
+      stoplight_wrap_request { ResolveAccountService.new.call(key_id.delete_prefix('acct:'), suppress_errors: false) }
    elsif !ActivityPub::TagManager.instance.local_uri?(key_id)
      account   = ActivityPub::TagManager.instance.uri_to_actor(key_id)
      account ||= stoplight_wrap_request { ActivityPub::FetchRemoteKeyService.new.call(key_id, id: false, suppress_errors: false) }
--- a/app/controllers/intents_controller.rb
+++ b/app/controllers/intents_controller.rb
@ -9,7 +9,7 @@ class IntentsController < ApplicationController
    if uri.scheme == 'web+mastodon'
      case uri.host
      when 'follow'
-        return redirect_to authorize_interaction_path(uri: uri.query_values['uri'].gsub(/\Aacct:/, ''))
+        return redirect_to authorize_interaction_path(uri: uri.query_values['uri'].delete_prefix('acct:'))
      when 'share'
        return redirect_to share_path(text: uri.query_values['text'])
      end
--- a/app/controllers/media_proxy_controller.rb
+++ b/app/controllers/media_proxy_controller.rb
@ -16,7 +16,7 @@ class MediaProxyController < ApplicationController
  rescue_from HTTP::TimeoutError, HTTP::ConnectionError, OpenSSL::SSL::SSLError, with: :internal_server_error

  def show
-    with_lock("media_download:#{params[:id]}") do
+    with_redis_lock("media_download:#{params[:id]}") do
      @media_attachment = MediaAttachment.remote.attached.find(params[:id])
      authorize @media_attachment.status, :show?
      redownload! if @media_attachment.needs_redownload? && !reject_media?
--- a/app/controllers/settings/exports_controller.rb
+++ b/app/controllers/settings/exports_controller.rb
@ -15,7 +15,7 @@ class Settings::ExportsController < Settings::BaseController
  def create
    backup = nil

-    with_lock("backup:#{current_user.id}") do
+    with_redis_lock("backup:#{current_user.id}") do
      authorize :backup, :create?
      backup = current_user.backups.create!
    end
--- a/app/controllers/settings/imports_controller.rb
+++ b/app/controllers/settings/imports_controller.rb
@ -1,31 +1,97 @@
 # frozen_string_literal: true

-class Settings::ImportsController < Settings::BaseController
-  before_action :set_account
+require 'csv'

-  def show
-    @import = Import.new
+class Settings::ImportsController < Settings::BaseController
+  before_action :set_bulk_import, only: [:show, :confirm, :destroy]
+  before_action :set_recent_imports, only: [:index]
+
+  TYPE_TO_FILENAME_MAP = {
+    following: 'following_accounts_failures.csv',
+    blocking: 'blocked_accounts_failures.csv',
+    muting: 'muted_accounts_failures.csv',
+    domain_blocking: 'blocked_domains_failures.csv',
+    bookmarks: 'bookmarks_failures.csv',
+  }.freeze
+
+  TYPE_TO_HEADERS_MAP = {
+    following: ['Account address', 'Show boosts', 'Notify on new posts', 'Languages'],
+    blocking: false,
+    muting: ['Account address', 'Hide notifications'],
+    domain_blocking: false,
+    bookmarks: false,
+  }.freeze
+
+  def index
+    @import = Form::Import.new(current_account: current_account)
+  end
+
+  def show; end
+
+  def failures
+    @bulk_import = current_account.bulk_imports.where(state: :finished).find(params[:id])
+
+    respond_to do |format|
+      format.csv do
+        filename = TYPE_TO_FILENAME_MAP[@bulk_import.type.to_sym]
+        headers = TYPE_TO_HEADERS_MAP[@bulk_import.type.to_sym]
+
+        export_data = CSV.generate(headers: headers, write_headers: true) do |csv|
+          @bulk_import.rows.find_each do |row|
+            case @bulk_import.type.to_sym
+            when :following
+              csv << [row.data['acct'], row.data.fetch('show_reblogs', true), row.data.fetch('notify', false), row.data['languages']&.join(', ')]
+            when :blocking
+              csv << [row.data['acct']]
+            when :muting
+              csv << [row.data['acct'], row.data.fetch('hide_notifications', true)]
+            when :domain_blocking
+              csv << [row.data['domain']]
+            when :bookmarks
+              csv << [row.data['uri']]
+            end
+          end
+        end
+
+        send_data export_data, filename: filename
+      end
+    end
+  end
+
+  def confirm
+    @bulk_import.update!(state: :scheduled)
+    BulkImportWorker.perform_async(@bulk_import.id)
+    redirect_to settings_imports_path, notice: I18n.t('imports.success')
  end

  def create
-    @import = Import.new(import_params)
-    @import.account = @account
+    @import = Form::Import.new(import_params.merge(current_account: current_account))

    if @import.save
-      ImportWorker.perform_async(@import.id)
-      redirect_to settings_import_path, notice: I18n.t('imports.success')
+      redirect_to settings_import_path(@import.bulk_import.id)
    else
-      render :show
+      # We need to set recent imports as we are displaying the index again
+      set_recent_imports
+      render :index
    end
  end

+  def destroy
+    @bulk_import.destroy!
+    redirect_to settings_imports_path
+  end
+
  private

-  def set_account
-    @account = current_user.account
+  def import_params
+    params.require(:form_import).permit(:data, :type, :mode)
  end

-  def import_params
-    params.require(:import).permit(:data, :type, :mode)
+  def set_bulk_import
+    @bulk_import = current_account.bulk_imports.where(state: :unconfirmed).find(params[:id])
+  end
+
+  def set_recent_imports
+    @recent_imports = current_account.bulk_imports.reorder(id: :desc).limit(10)
  end
 end
--- a/app/controllers/settings/preferences/appearance_controller.rb
+++ b/app/controllers/settings/preferences/appearance_controller.rb
@ -1,6 +1,6 @@
 # frozen_string_literal: true

-class Settings::Preferences::AppearanceController < Settings::PreferencesController
+class Settings::Preferences::AppearanceController < Settings::Preferences::BaseController
  private

  def after_update_redirect_path
--- a/app/controllers/settings/preferences/base_controller.rb
+++ b/app/controllers/settings/preferences/base_controller.rb
@ -1,6 +1,6 @@
 # frozen_string_literal: true

-class Settings::PreferencesController < Settings::BaseController
+class Settings::Preferences::BaseController < Settings::BaseController
  def show; end

  def update
@ -15,7 +15,7 @@ class Settings::PreferencesController < Settings::BaseController
  private

  def after_update_redirect_path
-    settings_preferences_path
+    raise 'Override in controller'
  end

  def user_params
--- a/app/controllers/settings/preferences/notifications_controller.rb
+++ b/app/controllers/settings/preferences/notifications_controller.rb
@ -1,6 +1,6 @@
 # frozen_string_literal: true

-class Settings::Preferences::NotificationsController < Settings::PreferencesController
+class Settings::Preferences::NotificationsController < Settings::Preferences::BaseController
  private

  def after_update_redirect_path
--- a/app/controllers/settings/preferences/other_controller.rb
+++ b/app/controllers/settings/preferences/other_controller.rb
@ -1,6 +1,6 @@
 # frozen_string_literal: true

-class Settings::Preferences::OtherController < Settings::PreferencesController
+class Settings::Preferences::OtherController < Settings::Preferences::BaseController
  private

  def after_update_redirect_path
--- a/app/controllers/well_known/webfinger_controller.rb
+++ b/app/controllers/well_known/webfinger_controller.rb
@ -18,7 +18,14 @@ module WellKnown
    private

    def set_account
-      @account = Account.find_local!(username_from_resource)
+      username = username_from_resource
+      @account = begin
+        if username == Rails.configuration.x.local_domain
+          Account.representative
+        else
+          Account.find_local!(username)
+        end
+      end
    end

    def username_from_resource
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@ -32,10 +32,6 @@ module ApplicationHelper
    paths.any? { |path| current_page?(path) } ? 'active' : ''
  end

-  def active_link_to(label, path, **options)
-    link_to label, path, options.merge(class: active_nav_class(path))
-  end
-
  def show_landing_strip?
    !user_signed_in? && !single_user_mode?
  end
@ -147,7 +143,7 @@ module ApplicationHelper
    if prefers_autoplay?
      image_tag(custom_emoji.image.url, class: 'emojione', alt: ":#{custom_emoji.shortcode}:")
    else
-      image_tag(custom_emoji.image.url(:static), class: 'emojione custom-emoji', alt: ":#{custom_emoji.shortcode}", 'data-original' => full_asset_url(custom_emoji.image.url), 'data-static' => full_asset_url(custom_emoji.image.url(:static)))
+      image_tag(custom_emoji.image.url(:static), :class => 'emojione custom-emoji', :alt => ":#{custom_emoji.shortcode}", 'data-original' => full_asset_url(custom_emoji.image.url), 'data-static' => full_asset_url(custom_emoji.image.url(:static)))
    end
  end

@ -174,11 +170,11 @@ module ApplicationHelper
  end

  def storage_host
-    "https://#{ENV['S3_ALIAS_HOST'].presence || ENV['S3_CLOUDFRONT_HOST']}"
+    URI::HTTPS.build(host: storage_host_name).to_s
  end

  def storage_host?
-    ENV['S3_ALIAS_HOST'].present? || ENV['S3_CLOUDFRONT_HOST'].present?
+    storage_host_name.present?
  end

  def quote_wrap(text, line_width: 80, break_sequence: "\n")
@ -236,4 +232,10 @@ module ApplicationHelper
  def prerender_custom_emojis(html, custom_emojis, other_options = {})
    EmojiFormatter.new(html, custom_emojis, other_options.merge(animate: prefers_autoplay?)).to_s
  end
+
+  private
+
+  def storage_host_name
+    ENV.fetch('S3_ALIAS_HOST', nil) || ENV.fetch('S3_CLOUDFRONT_HOST', nil)
+  end
 end
--- a/app/javascript/flavours/glitch/actions/app.js
+++ b/app/javascript/flavours/glitch/actions/app.js
@ -1,6 +0,0 @@
-export const APP_LAYOUT_CHANGE = 'APP_LAYOUT_CHANGE';
-
-export const changeLayout = layout => ({
-  type: APP_LAYOUT_CHANGE,
-  layout,
-});
--- a/app/javascript/flavours/glitch/actions/app.ts
+++ b/app/javascript/flavours/glitch/actions/app.ts
@ -0,0 +1,7 @@
+import { createAction } from '@reduxjs/toolkit';
+
+type ChangeLayoutPayload = {
+  layout: 'mobile' | 'single-column' | 'multi-column';
+};
+export const changeLayout =
+  createAction<ChangeLayoutPayload>('APP_LAYOUT_CHANGE');
--- a/app/javascript/flavours/glitch/blurhash.ts
+++ b/app/javascript/flavours/glitch/blurhash.ts
@ -84,7 +84,7 @@ const DIGIT_CHARACTERS = [
  '~',
 ];

-export const decode83 = (str) => {
+export const decode83 = (str: string) => {
  let value = 0;
  let c, digit;

@ -97,13 +97,13 @@ export const decode83 = (str) => {
  return value;
 };

-export const intToRGB = int => ({
+export const intToRGB = (int: number) => ({
  r: Math.max(0, (int >> 16)),
  g: Math.max(0, (int >> 8) & 255),
  b: Math.max(0, (int & 255)),
 });

-export const getAverageFromBlurhash = blurhash => {
+export const getAverageFromBlurhash = (blurhash: string) => {
  if (!blurhash) {
    return null;
  }
--- a/app/javascript/flavours/glitch/compare_id.ts
+++ b/app/javascript/flavours/glitch/compare_id.ts
@ -1,4 +1,4 @@
-export default function compareId (id1, id2) {
+export default function compareId (id1: string, id2: string) {
  if (id1 === id2) {
    return 0;
  }
--- a/app/javascript/flavours/glitch/components/avatar.tsx
+++ b/app/javascript/flavours/glitch/components/avatar.tsx
@ -2,7 +2,7 @@ import * as React from 'react';
 import classNames from 'classnames';
 import { autoPlayGif } from 'flavours/glitch/initial_state';
 import { useHovering } from 'hooks/useHovering';
-import type { Account } from 'types/resources';
+import type { Account } from 'flavours/glitch/types/resources';

 type Props = {
  account: Account | undefined;
--- a/app/javascript/flavours/glitch/components/blurhash.jsx
+++ b/app/javascript/flavours/glitch/components/blurhash.jsx
@ -1,65 +0,0 @@
-// @ts-check
-
-import { decode } from 'blurhash';
-import React, { useRef, useEffect } from 'react';
-import PropTypes from 'prop-types';
-
-/**
- * @typedef BlurhashPropsBase
- * @property {string?} hash Hash to render
- * @property {number} width
- * Width of the blurred region in pixels. Defaults to 32
- * @property {number} [height]
- * Height of the blurred region in pixels. Defaults to width
- * @property {boolean} [dummy]
- * Whether dummy mode is enabled. If enabled, nothing is rendered
- * and canvas left untouched
- */
-
-/** @typedef {JSX.IntrinsicElements['canvas'] & BlurhashPropsBase} BlurhashProps */
-
-/**
- * Component that is used to render blurred of blurhash string
- * @param {BlurhashProps} param1 Props of the component
- * @returns {JSX.Element} Canvas which will render blurred region element to embed
- */
-function Blurhash({
-  hash,
-  width = 32,
-  height = width,
-  dummy = false,
-  ...canvasProps
-}) {
-  const canvasRef = /** @type {import('react').MutableRefObject<HTMLCanvasElement>} */ (useRef());
-
-  useEffect(() => {
-    const { current: canvas } = canvasRef;
-    canvas.width = canvas.width; // resets canvas
-
-    if (dummy || !hash) return;
-
-    try {
-      const pixels = decode(hash, width, height);
-      const ctx = canvas.getContext('2d');
-      const imageData = new ImageData(pixels, width, height);
-
-      // @ts-expect-error
-      ctx.putImageData(imageData, 0, 0);
-    } catch (err) {
-      console.error('Blurhash decoding failure', { err, hash });
-    }
-  }, [dummy, hash, width, height]);
-
-  return (
-    <canvas {...canvasProps} ref={canvasRef} width={width} height={height} />
-  );
-}
-
-Blurhash.propTypes = {
-  hash: PropTypes.string.isRequired,
-  width: PropTypes.number,
-  height: PropTypes.number,
-  dummy: PropTypes.bool,
-};
-
-export default React.memo(Blurhash);
--- a/app/javascript/flavours/glitch/components/blurhash.tsx
+++ b/app/javascript/flavours/glitch/components/blurhash.tsx
@ -0,0 +1,45 @@
+import { decode } from 'blurhash';
+import React, { useRef, useEffect } from 'react';
+
+type Props = {
+  hash: string;
+  width?: number;
+  height?: number;
+  dummy?: boolean; // Whether dummy mode is enabled. If enabled, nothing is rendered and canvas left untouched
+  children?: never;
+  [key: string]: any;
+}
+function Blurhash({
+  hash,
+  width = 32,
+  height = width,
+  dummy = false,
+  ...canvasProps
+}: Props) {
+  const canvasRef = useRef<HTMLCanvasElement>(null);
+
+  useEffect(() => {
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    const canvas = canvasRef.current!;
+    // eslint-disable-next-line no-self-assign
+    canvas.width = canvas.width; // resets canvas
+
+    if (dummy || !hash) return;
+
+    try {
+      const pixels = decode(hash, width, height);
+      const ctx = canvas.getContext('2d');
+      const imageData = new ImageData(pixels, width, height);
+
+      ctx?.putImageData(imageData, 0, 0);
+    } catch (err) {
+      console.error('Blurhash decoding failure', { err, hash });
+    }
+  }, [dummy, hash, width, height]);
+
+  return (
+    <canvas {...canvasProps} ref={canvasRef} width={width} height={height} />
+  );
+}
+
+export default React.memo(Blurhash);
--- a/app/javascript/flavours/glitch/components/icon_button.tsx
+++ b/app/javascript/flavours/glitch/components/icon_button.tsx
@ -1,35 +1,37 @@
 import React from 'react';
-import PropTypes from 'prop-types';
 import classNames from 'classnames';
-import Icon from 'flavours/glitch/components/icon';
-import AnimatedNumber from 'flavours/glitch/components/animated_number';
+import { Icon } from './icon';
+import { AnimatedNumber } from './animated_number';

-export default class IconButton extends React.PureComponent {
-
-  static propTypes = {
-    className: PropTypes.string,
-    title: PropTypes.string.isRequired,
-    icon: PropTypes.string.isRequired,
-    onClick: PropTypes.func,
-    onMouseDown: PropTypes.func,
-    onKeyDown: PropTypes.func,
-    onKeyPress: PropTypes.func,
-    size: PropTypes.number,
-    active: PropTypes.bool,
-    expanded: PropTypes.bool,
-    style: PropTypes.object,
-    activeStyle: PropTypes.object,
-    disabled: PropTypes.bool,
-    inverted: PropTypes.bool,
-    animate: PropTypes.bool,
-    overlay: PropTypes.bool,
-    tabIndex: PropTypes.number,
-    label: PropTypes.string,
-    counter: PropTypes.number,
-    obfuscateCount: PropTypes.bool,
-    href: PropTypes.string,
-    ariaHidden: PropTypes.bool,
-  };
+type Props = {
+  className?: string;
+  title: string;
+  icon: string;
+  onClick?: React.MouseEventHandler<HTMLButtonElement>;
+  onMouseDown?: React.MouseEventHandler<HTMLButtonElement>;
+  onKeyDown?: React.KeyboardEventHandler<HTMLButtonElement>;
+  onKeyPress?: React.KeyboardEventHandler<HTMLButtonElement>;
+  size: number;
+  active: boolean;
+  expanded?: boolean;
+  style?: React.CSSProperties;
+  activeStyle?: React.CSSProperties;
+  disabled: boolean;
+  inverted?: boolean;
+  animate: boolean;
+  overlay: boolean;
+  tabIndex: number;
+  label: string;
+  counter?: number;
+  obfuscateCount?: boolean;
+  href?: string;
+  ariaHidden: boolean;
+}
+type States = {
+  activate: boolean,
+  deactivate: boolean,
+}
+export default class IconButton extends React.PureComponent<Props, States> {

  static defaultProps = {
    size: 18,
@ -46,7 +48,7 @@ export default class IconButton extends React.PureComponent {
    deactivate: false,
  };

-  componentWillReceiveProps (nextProps) {
+  UNSAFE_componentWillReceiveProps (nextProps: Props) {
    if (!nextProps.animate) return;

    if (this.props.active && !nextProps.active) {
@ -56,27 +58,27 @@ export default class IconButton extends React.PureComponent {
    }
  }

-  handleClick = (e) =>  {
+  handleClick: React.MouseEventHandler<HTMLButtonElement> = (e) =>  {
    e.preventDefault();

-    if (!this.props.disabled) {
+    if (!this.props.disabled && this.props.onClick != null) {
      this.props.onClick(e);
    }
  };

-  handleKeyPress = (e) => {
+  handleKeyPress: React.KeyboardEventHandler<HTMLButtonElement> = (e) => {
    if (this.props.onKeyPress && !this.props.disabled) {
      this.props.onKeyPress(e);
    }
  };

-  handleMouseDown = (e) => {
+  handleMouseDown: React.MouseEventHandler<HTMLButtonElement> = (e) => {
    if (!this.props.disabled && this.props.onMouseDown) {
      this.props.onMouseDown(e);
    }
  };

-  handleKeyDown = (e) => {
+  handleKeyDown: React.KeyboardEventHandler<HTMLButtonElement> = (e) => {
    if (!this.props.disabled && this.props.onKeyDown) {
      this.props.onKeyDown(e);
    }
@ -89,7 +91,7 @@ export default class IconButton extends React.PureComponent {
      containerSize = `${this.props.size * 1.28571429}px`;
    }

-    let style = {
+    const style = {
      fontSize: `${this.props.size}px`,
      height: containerSize,
      lineHeight: `${this.props.size}px`,
@ -144,7 +146,7 @@ export default class IconButton extends React.PureComponent {
      </React.Fragment>
    );

-    if (href && !this.prop) {
+    if (href != null) {
      contents = (
        <a href={href} target='_blank' rel='noopener noreferrer'>
          {contents}
--- a/app/javascript/flavours/glitch/components/media_gallery.jsx
+++ b/app/javascript/flavours/glitch/components/media_gallery.jsx
@ -101,12 +101,10 @@ class Item extends React.PureComponent {
  render () {
    const { attachment, lang, index, size, standalone, letterbox, displayWidth, visible } = this.props;

+    let badges = [], thumbnail;
+
    let width  = 50;
    let height = 100;
-    let top    = 'auto';
-    let left   = 'auto';
-    let bottom = 'auto';
-    let right  = 'auto';

    if (size === 1) {
      width = 100;
@ -116,45 +114,13 @@ class Item extends React.PureComponent {
      height = 50;
    }

-    if (size === 2) {
-      if (index === 0) {
-        right = '2px';
-      } else {
-        left = '2px';
-      }
-    } else if (size === 3) {
-      if (index === 0) {
-        right = '2px';
-      } else if (index > 0) {
-        left = '2px';
-      }
-
-      if (index === 1) {
-        bottom = '2px';
-      } else if (index > 1) {
-        top = '2px';
-      }
-    } else if (size === 4) {
-      if (index === 0 || index === 2) {
-        right = '2px';
-      }
-
-      if (index === 1 || index === 3) {
-        left = '2px';
-      }
-
-      if (index < 2) {
-        bottom = '2px';
-      } else {
-        top = '2px';
-      }
+    if (attachment.get('description')?.length > 0) {
+      badges.push(<span key='alt' className='media-gallery__gifv__label'>ALT</span>);
    }

-    let thumbnail = '';
-
    if (attachment.get('type') === 'unknown') {
      return (
-        <div className={classNames('media-gallery__item', { standalone })} key={attachment.get('id')} style={{ left: left, top: top, right: right, bottom: bottom, width: `${width}%`, height: `${height}%` }}>
+        <div className={classNames('media-gallery__item', { standalone, 'media-gallery__item--tall': height === 100, 'media-gallery__item--wide': width === 100 })} key={attachment.get('id')}>
          <a className='media-gallery__item-thumbnail' href={attachment.get('remote_url') || attachment.get('url')} style={{ cursor: 'pointer' }} title={attachment.get('description')} lang={lang} target='_blank' rel='noopener noreferrer'>
            <Blurhash
              hash={attachment.get('blurhash')}
@ -205,6 +171,8 @@ class Item extends React.PureComponent {
    } else if (attachment.get('type') === 'gifv') {
      const autoPlay = this.getAutoPlay();

+      badges.push(<span key='gif' className='media-gallery__gifv__label'>GIF</span>);
+
      thumbnail = (
        <div className={classNames('media-gallery__gifv', { autoplay: autoPlay })}>
          <video
@ -222,14 +190,12 @@ class Item extends React.PureComponent {
            loop
            muted
          />
-
-          <span className='media-gallery__gifv__label'>GIF</span>
        </div>
      );
    }

    return (
-      <div className={classNames('media-gallery__item', { standalone, letterbox })} key={attachment.get('id')} style={{ left: left, top: top, right: right, bottom: bottom, width: `${width}%`, height: `${height}%` }}>
+      <div className={classNames('media-gallery__item', { standalone, letterbox, 'media-gallery__item--tall': height === 100, 'media-gallery__item--wide': width === 100 })} key={attachment.get('id')}>
        <Blurhash
          hash={attachment.get('blurhash')}
          dummy={!useBlurhash}
@ -237,7 +203,14 @@ class Item extends React.PureComponent {
            'media-gallery__preview--hidden': visible && this.state.loaded,
          })}
        />
+
        {visible && thumbnail}
+
+        {badges && (
+          <div className='media-gallery__item__badges'>
+            {badges}
+          </div>
+        )}
      </div>
    );
  }
@ -358,12 +331,10 @@ class MediaGallery extends React.PureComponent {

    const computedClass = classNames('media-gallery', { 'full-width': fullwidth });

-    if (this.isStandaloneEligible() && width) {
-      style.height = width / this.props.media.getIn([0, 'meta', 'small', 'aspect']);
-    } else if (width) {
-      style.height = width / (16/9);
+    if (this.isStandaloneEligible()) { // TODO: cropImages setting
+      style.aspectRatio = `${this.props.media.getIn([0, 'meta', 'small', 'aspect'])}`;
    } else {
-      return (<div className={computedClass} ref={this.handleRef} />);
+      style.aspectRatio = '16 / 9';
    }

    if (this.isStandaloneEligible()) {
--- a/app/javascript/flavours/glitch/components/picture_in_picture_placeholder.jsx
+++ b/app/javascript/flavours/glitch/components/picture_in_picture_placeholder.jsx
@ -3,62 +3,22 @@ import PropTypes from 'prop-types';
 import Icon from 'flavours/glitch/components/icon';
 import { removePictureInPicture } from 'flavours/glitch/actions/picture_in_picture';
 import { connect } from 'react-redux';
-import { debounce } from 'lodash';
 import { FormattedMessage } from 'react-intl';

 class PictureInPicturePlaceholder extends React.PureComponent {

  static propTypes = {
-    width: PropTypes.number,
    dispatch: PropTypes.func.isRequired,
  };

-  state = {
-    width: this.props.width,
-    height: this.props.width && (this.props.width / (16/9)),
-  };
-
  handleClick = () => {
    const { dispatch } = this.props;
    dispatch(removePictureInPicture());
  };

-  setRef = c => {
-    this.node = c;
-
-    if (this.node) {
-      this._setDimensions();
-    }
-  };
-
-  _setDimensions () {
-    const width  = this.node.offsetWidth;
-    const height = width / (16/9);
-
-    this.setState({ width, height });
-  }
-
-  componentDidMount () {
-    window.addEventListener('resize', this.handleResize, { passive: true });
-  }
-
-  componentWillUnmount () {
-    window.removeEventListener('resize', this.handleResize);
-  }
-
-  handleResize = debounce(() => {
-    if (this.node) {
-      this._setDimensions();
-    }
-  }, 250, {
-    trailing: true,
-  });
-
  render () {
-    const { height } = this.state;
-
    return (
-      <div ref={this.setRef} className='picture-in-picture-placeholder' style={{ height }} role='button' tabIndex={0} onClick={this.handleClick}>
+      <div className='picture-in-picture-placeholder' role='button' tabIndex={0} onClick={this.handleClick}>
        <Icon id='window-restore' />
        <FormattedMessage id='picture_in_picture.restore' defaultMessage='Put it back' />
      </div>
--- a/app/javascript/flavours/glitch/components/status.jsx
+++ b/app/javascript/flavours/glitch/components/status.jsx
@ -628,7 +628,7 @@ class Status extends ImmutablePureComponent {
    attachments = status.get('media_attachments');

    if (pictureInPicture.get('inUse')) {
-      media.push(<PictureInPicturePlaceholder width={this.props.cachedMediaWidth} />);
+      media.push(<PictureInPicturePlaceholder />);
      mediaIcons.push('video-camera');
    } else if (attachments.size > 0) {
      if (muted || attachments.some(item => item.get('type') === 'unknown')) {
@ -684,8 +684,6 @@ class Status extends ImmutablePureComponent {
              fullwidth={!rootId && settings.getIn(['media', 'fullwidth'])}
              preventPlayback={isCollapsed || !isExpanded}
              onOpenVideo={this.handleOpenVideo}
-              width={this.props.cachedMediaWidth}
-              cacheWidth={this.props.cacheMediaWidth}
              deployPictureInPicture={pictureInPicture.get('available') ? this.handleDeployPictureInPicture : undefined}
              visible={this.state.showMedia}
              onToggleVisibility={this.handleToggleMediaVisibility}
@ -725,8 +723,6 @@ class Status extends ImmutablePureComponent {
          onOpenMedia={this.handleOpenMedia}
          card={status.get('card')}
          compact
-          cacheWidth={this.props.cacheMediaWidth}
-          defaultWidth={this.props.cachedMediaWidth}
          sensitive={status.get('sensitive')}
        />,
      );
--- a/app/javascript/flavours/glitch/containers/compose_container.jsx
+++ b/app/javascript/flavours/glitch/containers/compose_container.jsx
@ -1,7 +1,7 @@
 import React from 'react';
 import { Provider } from 'react-redux';
 import PropTypes from 'prop-types';
-import configureStore from 'flavours/glitch/store/configureStore';
+import { store } from 'flavours/glitch/store/configureStore';
 import { hydrateStore } from 'flavours/glitch/actions/store';
 import { IntlProvider, addLocaleData } from 'react-intl';
 import { getLocale } from 'mastodon/locales';
@ -12,8 +12,6 @@ import { fetchCustomEmojis } from 'flavours/glitch/actions/custom_emojis';
 const { localeData, messages } = getLocale();
 addLocaleData(localeData);

-const store = configureStore();
-
 if (initialState) {
  store.dispatch(hydrateStore(initialState));
 }
--- a/app/javascript/flavours/glitch/containers/mastodon.jsx
+++ b/app/javascript/flavours/glitch/containers/mastodon.jsx
@ -5,7 +5,7 @@ import { IntlProvider, addLocaleData } from 'react-intl';
 import { Provider as ReduxProvider } from 'react-redux';
 import { BrowserRouter, Route } from 'react-router-dom';
 import { ScrollContext } from 'react-router-scroll-4';
-import configureStore from 'flavours/glitch/store/configureStore';
+import { store } from 'flavours/glitch/store/configureStore';
 import UI from 'flavours/glitch/features/ui';
 import { fetchCustomEmojis } from 'flavours/glitch/actions/custom_emojis';
 import { hydrateStore } from 'flavours/glitch/actions/store';
@ -20,7 +20,6 @@ addLocaleData(localeData);

 const title = process.env.NODE_ENV === 'production' ? siteTitle : `${siteTitle} (Dev)`;

-export const store = configureStore();
 const hydrateAction = hydrateStore(initialState);
 store.dispatch(hydrateAction);

--- a/app/javascript/flavours/glitch/features/audio/index.jsx
+++ b/app/javascript/flavours/glitch/features/audio/index.jsx
@ -390,7 +390,7 @@ class Audio extends React.PureComponent {
  }

  _getRadius () {
-    return parseInt(((this.state.height || this.props.height) - (PADDING * this._getScaleCoefficient()) * 2) / 2);
+    return parseInt((this.state.height || this.props.height) / 2 - PADDING * this._getScaleCoefficient());
  }

  _getScaleCoefficient () {
@ -402,7 +402,7 @@ class Audio extends React.PureComponent {
  }

  _getCY() {
-    return Math.floor(this._getRadius() + (PADDING * this._getScaleCoefficient()));
+    return Math.floor((this.state.height || this.props.height) / 2);
  }

  _getAccentColor () {
@ -476,7 +476,7 @@ class Audio extends React.PureComponent {
    }

    return (
-      <div className={classNames('audio-player', { editable, inactive: !revealed })} ref={this.setPlayerRef} style={{ backgroundColor: this._getBackgroundColor(), color: this._getForegroundColor(), height: this.props.fullscreen ? '100%' : (this.state.height || this.props.height) }} onMouseEnter={this.handleMouseEnter} onMouseLeave={this.handleMouseLeave} tabIndex={0} onKeyDown={this.handleKeyDown}>
+      <div className={classNames('audio-player', { editable, inactive: !revealed })} ref={this.setPlayerRef} style={{ backgroundColor: this._getBackgroundColor(), color: this._getForegroundColor(), aspectRatio: '16 / 9' }} onMouseEnter={this.handleMouseEnter} onMouseLeave={this.handleMouseLeave} tabIndex={0} onKeyDown={this.handleKeyDown}>

        <Blurhash
          hash={blurhash}
@ -521,9 +521,16 @@ class Audio extends React.PureComponent {
        {(revealed || editable) && <img
          src={this.props.poster}
          alt=''
-          width={(this._getRadius() - TICK_SIZE) * 2}
-          height={(this._getRadius() - TICK_SIZE) * 2}
-          style={{ position: 'absolute', left: this._getCX(), top: this._getCY(), transform: 'translate(-50%, -50%)', borderRadius: '50%', pointerEvents: 'none' }}
+          style={{
+            position: 'absolute',
+            left: '50%',
+            top: '50%',
+            height: `calc(${(100 - 2 * 100 * PADDING / 982)}% - ${TICK_SIZE * 2}px)`,
+            aspectRatio: '1',
+            transform: 'translate(-50%, -50%)',
+            borderRadius: '50%',
+            pointerEvents: 'none',
+          }}
        />}

        <div className='video-player__seek' onMouseDown={this.handleMouseDown} ref={this.setSeekRef}>
--- a/app/javascript/flavours/glitch/features/status/components/card.jsx
+++ b/app/javascript/flavours/glitch/features/status/components/card.jsx
@ -8,7 +8,6 @@ import { decode as decodeIDNA } from 'flavours/glitch/utils/idna';
 import Icon from 'flavours/glitch/components/icon';
 import { useBlurhash } from 'flavours/glitch/initial_state';
 import Blurhash from 'flavours/glitch/components/blurhash';
-import { debounce } from 'lodash';

 const getHostname = url => {
  const parser = document.createElement('a');
@ -45,8 +44,6 @@ export default class Card extends React.PureComponent {
    card: ImmutablePropTypes.map,
    onOpenMedia: PropTypes.func.isRequired,
    compact: PropTypes.bool,
-    defaultWidth: PropTypes.number,
-    cacheWidth: PropTypes.func,
    sensitive: PropTypes.bool,
  };

@ -55,7 +52,6 @@ export default class Card extends React.PureComponent {
  };

  state = {
-    width: this.props.defaultWidth || 280,
    previewLoaded: false,
    embedded: false,
    revealed: !this.props.sensitive,
@ -78,24 +74,6 @@ export default class Card extends React.PureComponent {
    window.removeEventListener('resize', this.handleResize);
  }

-  _setDimensions () {
-    const width = this.node.offsetWidth;
-
-    if (this.props.cacheWidth) {
-      this.props.cacheWidth(width);
-    }
-
-    this.setState({ width });
-  }
-
-  handleResize = debounce(() => {
-    if (this.node) {
-      this._setDimensions();
-    }
-  }, 250, {
-    trailing: true,
-  });
-
  handlePhotoClick = () => {
    const { card, onOpenMedia } = this.props;

@ -129,10 +107,6 @@ export default class Card extends React.PureComponent {

  setRef = c => {
    this.node = c;
-
-    if (this.node) {
-      this._setDimensions();
-    }
  };

  handleImageLoad = () => {
@ -148,36 +122,31 @@ export default class Card extends React.PureComponent {
  renderVideo () {
    const { card }  = this.props;
    const content   = { __html: addAutoPlay(card.get('html')) };
-    const { width } = this.state;
-    const ratio     = card.get('width') / card.get('height');
-    const height    = width / ratio;

    return (
      <div
        ref={this.setRef}
        className='status-card__image status-card-video'
        dangerouslySetInnerHTML={content}
-        style={{ height }}
+        style={{ aspectRatio: `${card.get('width')} / ${card.get('height')}` }}
      />
    );
  }

  render () {
    const { card, compact } = this.props;
-    const { width, embedded, revealed } = this.state;
+    const { embedded, revealed } = this.state;

    if (card === null) {
      return null;
    }

    const provider    = card.get('provider_name').length === 0 ? decodeIDNA(getHostname(card.get('url'))) : card.get('provider_name');
-    const horizontal  = (!compact && card.get('width') > card.get('height') && (card.get('width') + 100 >= width)) || card.get('type') !== 'link' || embedded;
+    const horizontal  = (!compact && card.get('width') > card.get('height')) || card.get('type') !== 'link' || embedded;
    const interactive = card.get('type') !== 'link';
    const className   = classnames('status-card', { horizontal, compact, interactive });
    const title       = interactive ? <a className='status-card__title' href={card.get('url')} title={card.get('title')} rel='noopener noreferrer' target='_blank'><strong>{card.get('title')}</strong></a> : <strong className='status-card__title' title={card.get('title')}>{card.get('title')}</strong>;
    const language    = card.get('language') || '';
-    const ratio       = card.get('width') / card.get('height');
-    const height      = (compact && !embedded) ? (width / (16 / 9)) : (width / ratio);

    const description = (
      <div className='status-card__content' lang={language}>
@ -187,6 +156,14 @@ export default class Card extends React.PureComponent {
      </div>
    );

+    const thumbnailStyle = {
+      visibility: revealed? null : 'hidden',
+    };
+
+    if (horizontal) {
+      thumbnailStyle.aspectRatio = (compact && !embedded) ? '16 / 9' : `${card.get('width')} / ${card.get('height')}`;
+    }
+
    let embed     = '';
    let canvas = (
      <Blurhash
@ -197,7 +174,7 @@ export default class Card extends React.PureComponent {
        dummy={!useBlurhash}
      />
    );
-    let thumbnail = <img src={card.get('image')} alt='' style={{ width: horizontal ? width : null, height: horizontal ? height : null, visibility: revealed ? null : 'hidden' }} onLoad={this.handleImageLoad} className='status-card__image-image' />;
+    let thumbnail = <img src={card.get('image')} alt='' style={thumbnailStyle} onLoad={this.handleImageLoad} className='status-card__image-image' />;
    let spoilerButton = (
      <button type='button' onClick={this.handleReveal} className='spoiler-button__overlay'>
        <span className='spoiler-button__overlay__label'><FormattedMessage id='status.sensitive_warning' defaultMessage='Sensitive content' /></span>
--- a/app/javascript/flavours/glitch/features/ui/index.jsx
+++ b/app/javascript/flavours/glitch/features/ui/index.jsx
@ -378,7 +378,7 @@ class UI extends React.Component {

    if (layout !== this.props.layout) {
      this.handleLayoutChange.cancel();
-      this.props.dispatch(changeLayout(layout));
+      this.props.dispatch(changeLayout({ layout }));
    } else {
      this.handleLayoutChange();
    }
--- a/app/javascript/flavours/glitch/features/video/index.jsx
+++ b/app/javascript/flavours/glitch/features/video/index.jsx
@ -2,7 +2,7 @@ import React from 'react';
 import PropTypes from 'prop-types';
 import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
 import { is } from 'immutable';
-import { throttle, debounce } from 'lodash';
+import { throttle } from 'lodash';
 import classNames from 'classnames';
 import { isFullscreen, requestFullscreen, exitFullscreen } from '../ui/util/fullscreen';
 import { displayMedia, useBlurhash } from 'flavours/glitch/initial_state';
@ -102,8 +102,6 @@ class Video extends React.PureComponent {
    src: PropTypes.string.isRequired,
    alt: PropTypes.string,
    lang: PropTypes.string,
-    width: PropTypes.number,
-    height: PropTypes.number,
    sensitive: PropTypes.bool,
    currentTime: PropTypes.number,
    onOpenVideo: PropTypes.func,
@ -112,7 +110,6 @@ class Video extends React.PureComponent {
    inline: PropTypes.bool,
    editable: PropTypes.bool,
    alwaysVisible: PropTypes.bool,
-    cacheWidth: PropTypes.func,
    visible: PropTypes.bool,
    letterbox: PropTypes.bool,
    fullwidth: PropTypes.bool,
@ -138,41 +135,16 @@ class Video extends React.PureComponent {
    volume: 0.5,
    paused: true,
    dragging: false,
-    containerWidth: this.props.width,
    fullscreen: false,
    hovered: false,
    muted: false,
    revealed: this.props.visible !== undefined ? this.props.visible : (displayMedia !== 'hide_all' && !this.props.sensitive || displayMedia === 'show_all'),
  };

-  componentWillReceiveProps (nextProps) {
-    if (!is(nextProps.visible, this.props.visible) && nextProps.visible !== undefined) {
-      this.setState({ revealed: nextProps.visible });
-    }
-  }
-
  setPlayerRef = c => {
    this.player = c;
-
-    if (this.player) {
-      this._setDimensions();
-    }
  };

-  _setDimensions () {
-    const width = this.player.offsetWidth;
-
-    if (width && width !== this.state.containerWidth) {
-      if (this.props.cacheWidth) {
-        this.props.cacheWidth(width);
-      }
-
-      this.setState({
-        containerWidth: width,
-      });
-    }
-  }
-
  setVideoRef = c => {
    this.video = c;

@ -381,12 +353,10 @@ class Video extends React.PureComponent {
    document.addEventListener('MSFullscreenChange', this.handleFullscreenChange, true);

    window.addEventListener('scroll', this.handleScroll);
-    window.addEventListener('resize', this.handleResize, { passive: true });
  }

  componentWillUnmount () {
    window.removeEventListener('scroll', this.handleScroll);
-    window.removeEventListener('resize', this.handleResize);

    document.removeEventListener('fullscreenchange', this.handleFullscreenChange, true);
    document.removeEventListener('webkitfullscreenchange', this.handleFullscreenChange, true);
@ -403,26 +373,18 @@ class Video extends React.PureComponent {
    }
  }

-  componentDidUpdate (prevProps) {
-    if (this.player && this.player.offsetWidth && this.player.offsetWidth !== this.state.containerWidth && !this.state.fullscreen) {
-      if (this.props.cacheWidth) this.props.cacheWidth(this.player.offsetWidth);
-      this.setState({
-        containerWidth: this.player.offsetWidth,
-      });
+  componentWillReceiveProps (nextProps) {
+    if (!is(nextProps.visible, this.props.visible) && nextProps.visible !== undefined) {
+      this.setState({ revealed: nextProps.visible });
    }
+  }
+
+  componentDidUpdate (prevProps) {
    if (this.video && this.state.revealed && this.props.preventPlayback && !prevProps.preventPlayback) {
      this.video.pause();
    }
  }

-  handleResize = debounce(() => {
-    if (this.player) {
-      this._setDimensions();
-    }
-  }, 250, {
-    trailing: true,
-  });
-
  handleScroll = throttle(() => {
    if (!this.video) {
      return;
@ -540,21 +502,12 @@ class Video extends React.PureComponent {

  render () {
    const { preview, src, inline, onOpenVideo, onCloseVideo, intl, alt, lang, letterbox, fullwidth, detailed, sensitive, editable, blurhash, autoFocus } = this.props;
-    const { containerWidth, currentTime, duration, volume, buffer, dragging, paused, fullscreen, hovered, muted, revealed } = this.state;
+    const { currentTime, duration, volume, buffer, dragging, paused, fullscreen, hovered, muted, revealed } = this.state;
    const progress = Math.min((currentTime / duration) * 100, 100);
    const playerStyle = {};

-    const computedClass = classNames('video-player', { inactive: !revealed, detailed, inline: inline && !fullscreen, fullscreen, editable, letterbox, 'full-width': fullwidth });
-
-    let { width, height } = this.props;
-
-    if (inline && containerWidth) {
-      width  = containerWidth;
-      height = containerWidth / (16/9);
-
-      playerStyle.height = height;
-    } else if (inline) {
-      return (<div className={computedClass} ref={this.setPlayerRef} tabIndex={0} />);
+    if (inline) {
+      playerStyle.aspectRatio = '16 / 9';
    }

    let preload;
@ -578,7 +531,7 @@ class Video extends React.PureComponent {
    return (
      <div
        role='menuitem'
-        className={computedClass}
+        className={classNames('video-player', { inactive: !revealed, detailed, inline: inline && !fullscreen, fullscreen, editable, letterbox, 'full-width': fullwidth })}
        style={playerStyle}
        ref={this.setPlayerRef}
        onMouseEnter={this.handleMouseEnter}
@ -605,8 +558,6 @@ class Video extends React.PureComponent {
          aria-label={alt}
          title={alt}
          lang={lang}
-          width={width}
-          height={height}
          volume={volume}
          onClick={this.togglePlay}
          onKeyDown={this.handleVideoKeyDown}
@ -615,6 +566,7 @@ class Video extends React.PureComponent {
          onLoadedData={this.handleLoadedData}
          onProgress={this.handleProgress}
          onVolumeChange={this.handleVolumeChange}
+          style={{ ...playerStyle, width: '100%' }}
        />}

        <div className={classNames('spoiler-button', { 'spoiler-button--hidden': revealed || editable })}>
--- a/app/javascript/flavours/glitch/is_mobile.ts
+++ b/app/javascript/flavours/glitch/is_mobile.ts
@ -1,21 +1,12 @@
-// @ts-check
-
 import { supportsPassiveEvents } from 'detect-passive-events';
 import { forceSingleColumn } from 'flavours/glitch/initial_state';

 const LAYOUT_BREAKPOINT = 630;

-/**
- * @param {number} width
- * @returns {boolean}
- */
-export const isMobile = width => width <= LAYOUT_BREAKPOINT;
+export const isMobile = (width: number) => width <= LAYOUT_BREAKPOINT;

-/**
- * @param {string} layout_local_setting
- * @returns {string}
- */
-export const layoutFromWindow = (layout_local_setting) => {
+export type LayoutType = 'mobile' | 'single-column' | 'multi-column';
+export const layoutFromWindow = (layout_local_setting : string): LayoutType => {
  switch (layout_local_setting) {
  case 'multiple':
    return 'multi-column';
@ -36,8 +27,9 @@ export const layoutFromWindow = (layout_local_setting) => {
  }
 };

+// eslint-disable-next-line @typescript-eslint/ban-ts-comment
 // @ts-expect-error
-const iOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
+const iOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && window.MSStream != null;

 const listenerOptions = supportsPassiveEvents ? { passive: true } : false;

--- a/app/javascript/flavours/glitch/main.jsx
+++ b/app/javascript/flavours/glitch/main.jsx
@ -1,7 +1,8 @@
 import React from 'react';
 import ReactDOM from 'react-dom';
 import { setupBrowserNotifications } from 'flavours/glitch/actions/notifications';
-import Mastodon, { store } from 'flavours/glitch/containers/mastodon';
+import Mastodon from 'flavours/glitch/containers/mastodon';
+import { store } from 'flavours/glitch/store/configureStore';
 import { me } from 'flavours/glitch/initial_state';
 import ready from 'flavours/glitch/ready';

--- a/app/javascript/flavours/glitch/permissions.ts
+++ b/app/javascript/flavours/glitch/permissions.ts
--- a/app/javascript/flavours/glitch/reducers/meta.js
+++ b/app/javascript/flavours/glitch/reducers/meta.js
@ -1,5 +1,5 @@
 import { STORE_HYDRATE } from 'flavours/glitch/actions/store';
-import { APP_LAYOUT_CHANGE } from 'flavours/glitch/actions/app';
+import { changeLayout } from 'flavours/glitch/actions/app';
 import { Map as ImmutableMap } from 'immutable';
 import { layoutFromWindow } from 'flavours/glitch/is_mobile';

@ -16,8 +16,8 @@ export default function meta(state = initialState, action) {
    return state.merge(action.state.get('meta'))
      .set('permissions', action.state.getIn(['role', 'permissions']))
      .set('layout', layoutFromWindow(action.state.getIn(['local_settings', 'layout'])));
-  case APP_LAYOUT_CHANGE:
-    return state.set('layout', action.layout);
+  case changeLayout.type:
+    return state.set('layout', action.payload.layout);
  default:
    return state;
  }
--- a/app/javascript/flavours/glitch/scroll.ts
+++ b/app/javascript/flavours/glitch/scroll.ts
@ -1,6 +1,5 @@
-const easingOutQuint = (x, t, b, c, d) => c * ((t = t / d - 1) * t * t * t * t + 1) + b;
-
-const scroll = (node, key, target) => {
+const easingOutQuint = (x: number, t: number, b: number, c: number, d: number) => c * ((t = t / d - 1) * t * t * t * t + 1) + b;
+const scroll = (node: Element, key: 'scrollTop' | 'scrollLeft', target: number) => {
  const startTime = Date.now();
  const offset    = node[key];
  const gap       = target - offset;
@ -28,5 +27,5 @@ const scroll = (node, key, target) => {

 const isScrollBehaviorSupported = 'scrollBehavior' in document.documentElement.style;

-export const scrollRight = (node, position) => isScrollBehaviorSupported ? node.scrollTo({ left: position, behavior: 'smooth' }) : scroll(node, 'scrollLeft', position);
-export const scrollTop = (node) => isScrollBehaviorSupported ? node.scrollTo({ top: 0, behavior: 'smooth' }) : scroll(node, 'scrollTop', 0);
+export const scrollRight = (node: Element, position: number) => isScrollBehaviorSupported ? node.scrollTo({ left: position, behavior: 'smooth' }) : scroll(node, 'scrollLeft', position);
+export const scrollTop = (node: Element) => isScrollBehaviorSupported ? node.scrollTo({ top: 0, behavior: 'smooth' }) : scroll(node, 'scrollTop', 0);
--- a/app/javascript/flavours/glitch/store/configureStore.js
+++ b/app/javascript/flavours/glitch/store/configureStore.js
@ -1,15 +1,16 @@
-import { createStore, applyMiddleware, compose } from 'redux';
+import { configureStore } from '@reduxjs/toolkit';
 import thunk from 'redux-thunk';
 import appReducer from '../reducers';
 import loadingBarMiddleware from '../middleware/loading_bar';
 import errorsMiddleware from '../middleware/errors';
 import soundsMiddleware from '../middleware/sounds';

-export default function configureStore() {
-  return createStore(appReducer, compose(applyMiddleware(
+export const store = configureStore({
+  reducer: appReducer,
+  middleware: [
    thunk,
    loadingBarMiddleware({ promiseTypeSuffixes: ['REQUEST', 'SUCCESS', 'FAIL'] }),
    errorsMiddleware(),
    soundsMiddleware(),
-  ), window.__REDUX_DEVTOOLS_EXTENSION__ ? window.__REDUX_DEVTOOLS_EXTENSION__() : f => f));
-}
+  ],
+});
--- a/app/javascript/flavours/glitch/styles/_mixins.scss
+++ b/app/javascript/flavours/glitch/styles/_mixins.scss
@ -47,7 +47,6 @@
    margin-right: -14px;
    width: inherit;
    max-width: none;
-    height: 250px;
    border-radius: 0;
  }
 }
--- a/app/javascript/flavours/glitch/styles/components/media.scss
+++ b/app/javascript/flavours/glitch/styles/components/media.scss
@ -43,30 +43,25 @@
  font-weight: 500;
 }

-.media-gallery__gifv__label {
-  display: block;
+.media-gallery__item__badges {
  position: absolute;
-  color: $primary-text-color;
-  background: rgba($base-overlay-background, 0.5);
  bottom: 6px;
  inset-inline-start: 6px;
-  padding: 2px 6px;
-  border-radius: 2px;
-  font-size: 11px;
-  font-weight: 600;
-  z-index: 1;
-  pointer-events: none;
-  opacity: 0.9;
-  transition: opacity 0.1s ease;
-  line-height: 18px;
+  display: flex;
+  gap: 2px;
 }

-.media-gallery__gifv {
-  &:hover {
-    .media-gallery__gifv__label {
-      opacity: 1;
-    }
-  }
+.media-gallery__gifv__label {
+  display: block;
+  color: $white;
+  background: rgba($black, 0.65);
+  padding: 2px 6px;
+  border-radius: 4px;
+  font-size: 11px;
+  font-weight: 700;
+  z-index: 1;
+  pointer-events: none;
+  line-height: 18px;
 }

 .media-gallery {
@ -77,6 +72,10 @@
  position: relative;
  width: 100%;
  min-height: 64px;
+  display: grid;
+  grid-template-columns: 50% 50%;
+  grid-template-rows: 50% 50%;
+  gap: 2px;

  @include fullwidth-gallery;
 }
@ -85,13 +84,16 @@
  border: 0;
  box-sizing: border-box;
  display: block;
-  float: left;
  position: relative;
  border-radius: 4px;
  overflow: hidden;

-  .full-width & {
-    border-radius: 0;
+  &--tall {
+    grid-row: span 2;
+  }
+
+  &--wide {
+    grid-column: span 2;
  }

  &.standalone {
@ -101,6 +103,10 @@
    }
  }

+  .full-width & {
+    border-radius: 0;
+  }
+
  &.letterbox {
    background: $base-shadow-color;
  }
--- a/app/javascript/flavours/glitch/styles/components/status.scss
+++ b/app/javascript/flavours/glitch/styles/components/status.scss
@ -707,7 +707,6 @@ a.status__display-name,
  margin-inline-end: 10px;
  height: 48px;
  width: 48px;
-  box-shadow: 0 0 0 2px $ui-base-color;
 }

 .muted {
@ -825,6 +824,10 @@ a.status-card {
 }

 .status-card-video {
+  // Firefox has a bug where frameborder=0 iframes add some extra blank space
+  // see https://bugzilla.mozilla.org/show_bug.cgi?id=155174
+  overflow: hidden;
+
  iframe {
    width: 100%;
    height: 100%;
@ -1171,6 +1174,7 @@ a.status-card.compact:hover {
  font-weight: 500;
  cursor: pointer;
  color: $darker-text-color;
+  aspect-ratio: 16 / 9;

  i {
    display: block;
--- a/app/javascript/flavours/glitch/types/resources.ts
+++ b/app/javascript/flavours/glitch/types/resources.ts
@ -0,0 +1,10 @@
+import type { Record } from 'immutable';
+
+type AccountValues = {
+  id: number;
+  avatar: string;
+  avatar_static: string;
+  [key: string]: any;
+};
+
+export type Account = Record<AccountValues>;
--- a/app/javascript/flavours/glitch/types/util.ts
+++ b/app/javascript/flavours/glitch/types/util.ts
@ -0,0 +1 @@
+export type ValueOf<T> = T[keyof T];
--- a/app/javascript/flavours/glitch/utils/base64.ts
+++ b/app/javascript/flavours/glitch/utils/base64.ts
@ -1,4 +1,4 @@
-export const decode = base64 => {
+export const decode = (base64: string): Uint8Array => {
  const rawData = window.atob(base64);
  const outputArray = new Uint8Array(rawData.length);

--- a/app/javascript/flavours/glitch/utils/filters.ts
+++ b/app/javascript/flavours/glitch/utils/filters.ts
@ -1,4 +1,4 @@
-export const toServerSideType = columnType => {
+export const toServerSideType = (columnType: string) => {
  switch (columnType) {
  case 'home':
  case 'notifications':
--- a/app/javascript/flavours/glitch/utils/numbers.ts
+++ b/app/javascript/flavours/glitch/utils/numbers.ts
@ -1,23 +1,19 @@
-// @ts-check
+import type { ValueOf } from 'flavours/glitch/types/util';

 export const DECIMAL_UNITS = Object.freeze({
  ONE: 1,
  TEN: 10,
-  HUNDRED: Math.pow(10, 2),
-  THOUSAND: Math.pow(10, 3),
-  MILLION: Math.pow(10, 6),
-  BILLION: Math.pow(10, 9),
-  TRILLION: Math.pow(10, 12),
+  HUNDRED: 100,
+  THOUSAND: 1_000,
+  MILLION: 1_000_000,
+  BILLION: 1_000_000_000,
+  TRILLION: 1_000_000_000_000,
 });
+export type DecimalUnits = ValueOf<typeof DECIMAL_UNITS>;

 const TEN_THOUSAND = DECIMAL_UNITS.THOUSAND * 10;
 const TEN_MILLIONS = DECIMAL_UNITS.MILLION * 10;

-/**
- * @typedef {[number, number, number]} ShortNumber
- * Array of: shorten number, unit of shorten number and maximum fraction digits
- */
-
 /**
 * @param {number} sourceNumber Number to convert to short number
 * @returns {ShortNumber} Calculated short number
@ -25,7 +21,8 @@ const TEN_MILLIONS = DECIMAL_UNITS.MILLION * 10;
 * shortNumber(5936);
 * // => [5.936, 1000, 1]
 */
-export function toShortNumber(sourceNumber) {
+export type ShortNumber = [number, DecimalUnits, 0 | 1] // Array of: shorten number, unit of shorten number and maximum fraction digits
+export function toShortNumber(sourceNumber: number): ShortNumber {
  if (sourceNumber < DECIMAL_UNITS.THOUSAND) {
    return [sourceNumber, DECIMAL_UNITS.ONE, 0];
  } else if (sourceNumber < DECIMAL_UNITS.MILLION) {
@ -59,20 +56,16 @@ export function toShortNumber(sourceNumber) {
 * pluralReady(1793, DECIMAL_UNITS.THOUSAND)
 * // => 1790
 */
-export function pluralReady(sourceNumber, division) {
+export function pluralReady(sourceNumber: number, division: DecimalUnits): number {
  if (division == null || division < DECIMAL_UNITS.HUNDRED) {
    return sourceNumber;
  }

-  let closestScale = division / DECIMAL_UNITS.TEN;
+  const closestScale = division / DECIMAL_UNITS.TEN;

  return Math.trunc(sourceNumber / closestScale) * closestScale;
 }

-/**
- * @param {number} num
- * @returns {number}
- */
-export function roundTo10(num) {
+export function roundTo10(num: number): number {
  return Math.round(num * 0.1) / 0.1;
 }
--- a/app/javascript/mastodon/actions/app.js
+++ b/app/javascript/mastodon/actions/app.js
@ -1,17 +0,0 @@
-export const APP_FOCUS   = 'APP_FOCUS';
-export const APP_UNFOCUS = 'APP_UNFOCUS';
-
-export const focusApp = () => ({
-  type: APP_FOCUS,
-});
-
-export const unfocusApp = () => ({
-  type: APP_UNFOCUS,
-});
-
-export const APP_LAYOUT_CHANGE = 'APP_LAYOUT_CHANGE';
-
-export const changeLayout = layout => ({
-  type: APP_LAYOUT_CHANGE,
-  layout,
-});
--- a/app/javascript/mastodon/actions/app.ts
+++ b/app/javascript/mastodon/actions/app.ts
@ -0,0 +1,10 @@
+import { createAction } from '@reduxjs/toolkit';
+
+export const focusApp = createAction('APP_FOCUS');
+export const unfocusApp = createAction('APP_UNFOCUS');
+
+type ChangeLayoutPayload = {
+  layout: 'mobile' | 'single-column' | 'multi-column';
+};
+export const changeLayout =
+  createAction<ChangeLayoutPayload>('APP_LAYOUT_CHANGE');
--- a/app/javascript/mastodon/blurhash.ts
+++ b/app/javascript/mastodon/blurhash.ts
@ -84,7 +84,7 @@ const DIGIT_CHARACTERS = [
  '~',
 ];

-export const decode83 = (str) => {
+export const decode83 = (str: string) => {
  let value = 0;
  let c, digit;

@ -97,13 +97,13 @@ export const decode83 = (str) => {
  return value;
 };

-export const intToRGB = int => ({
+export const intToRGB = (int: number) => ({
  r: Math.max(0, (int >> 16)),
  g: Math.max(0, (int >> 8) & 255),
  b: Math.max(0, (int & 255)),
 });

-export const getAverageFromBlurhash = blurhash => {
+export const getAverageFromBlurhash = (blurhash: string) => {
  if (!blurhash) {
    return null;
  }
--- a/app/javascript/flavours/glitch/compare_id.js
+++ b/app/javascript/flavours/glitch/compare_id.js
@ -1,4 +1,4 @@
-export default function compareId (id1, id2) {
+export default function compareId (id1: string, id2: string) {
  if (id1 === id2) {
    return 0;
  }
--- a/app/javascript/mastodon/components/blurhash.jsx
+++ b/app/javascript/mastodon/components/blurhash.jsx
@ -1,65 +0,0 @@
-// @ts-check
-
-import { decode } from 'blurhash';
-import React, { useRef, useEffect } from 'react';
-import PropTypes from 'prop-types';
-
-/**
- * @typedef BlurhashPropsBase
- * @property {string?} hash Hash to render
- * @property {number} width
- * Width of the blurred region in pixels. Defaults to 32
- * @property {number} [height]
- * Height of the blurred region in pixels. Defaults to width
- * @property {boolean} [dummy]
- * Whether dummy mode is enabled. If enabled, nothing is rendered
- * and canvas left untouched
- */
-
-/** @typedef {JSX.IntrinsicElements['canvas'] & BlurhashPropsBase} BlurhashProps */
-
-/**
- * Component that is used to render blurred of blurhash string
- * @param {BlurhashProps} param1 Props of the component
- * @returns {JSX.Element} Canvas which will render blurred region element to embed
- */
-function Blurhash({
-  hash,
-  width = 32,
-  height = width,
-  dummy = false,
-  ...canvasProps
-}) {
-  const canvasRef = /** @type {import('react').MutableRefObject<HTMLCanvasElement>} */ (useRef());
-
-  useEffect(() => {
-    const { current: canvas } = canvasRef;
-    canvas.width = canvas.width; // resets canvas
-
-    if (dummy || !hash) return;
-
-    try {
-      const pixels = decode(hash, width, height);
-      const ctx = canvas.getContext('2d');
-      const imageData = new ImageData(pixels, width, height);
-
-      // @ts-expect-error
-      ctx.putImageData(imageData, 0, 0);
-    } catch (err) {
-      console.error('Blurhash decoding failure', { err, hash });
-    }
-  }, [dummy, hash, width, height]);
-
-  return (
-    <canvas {...canvasProps} ref={canvasRef} width={width} height={height} />
-  );
-}
-
-Blurhash.propTypes = {
-  hash: PropTypes.string.isRequired,
-  width: PropTypes.number,
-  height: PropTypes.number,
-  dummy: PropTypes.bool,
-};
-
-export default React.memo(Blurhash);
--- a/app/javascript/mastodon/components/blurhash.tsx
+++ b/app/javascript/mastodon/components/blurhash.tsx
@ -0,0 +1,45 @@
+import { decode } from 'blurhash';
+import React, { useRef, useEffect } from 'react';
+
+type Props = {
+  hash: string;
+  width?: number;
+  height?: number;
+  dummy?: boolean; // Whether dummy mode is enabled. If enabled, nothing is rendered and canvas left untouched
+  children?: never;
+  [key: string]: any;
+}
+function Blurhash({
+  hash,
+  width = 32,
+  height = width,
+  dummy = false,
+  ...canvasProps
+}: Props) {
+  const canvasRef = useRef<HTMLCanvasElement>(null);
+
+  useEffect(() => {
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    const canvas = canvasRef.current!;
+    // eslint-disable-next-line no-self-assign
+    canvas.width = canvas.width; // resets canvas
+
+    if (dummy || !hash) return;
+
+    try {
+      const pixels = decode(hash, width, height);
+      const ctx = canvas.getContext('2d');
+      const imageData = new ImageData(pixels, width, height);
+
+      ctx?.putImageData(imageData, 0, 0);
+    } catch (err) {
+      console.error('Blurhash decoding failure', { err, hash });
+    }
+  }, [dummy, hash, width, height]);
+
+  return (
+    <canvas {...canvasProps} ref={canvasRef} width={width} height={height} />
+  );
+}
+
+export default React.memo(Blurhash);
--- a/app/javascript/mastodon/components/column_back_button.jsx
+++ b/app/javascript/mastodon/components/column_back_button.jsx
@ -21,7 +21,9 @@ export default class ColumnBackButton extends React.PureComponent {

    if (onClick) {
      onClick();
-    } else if (window.history && window.history.state) {
+    // Check if there is a previous page in the app to go back to per https://stackoverflow.com/a/70532858/9703201
+    // When upgrading to V6, check `location.key !== 'default'` instead per https://github.com/remix-run/history/blob/main/docs/api-reference.md#location
+    } else if (router.route.location.key) {
      router.history.goBack();
    } else {
      router.history.push('/');
--- a/app/javascript/mastodon/components/icon_button.tsx
+++ b/app/javascript/mastodon/components/icon_button.tsx
@ -1,34 +1,36 @@
 import React from 'react';
-import PropTypes from 'prop-types';
 import classNames from 'classnames';
-import Icon from 'mastodon/components/icon';
-import AnimatedNumber from 'mastodon/components/animated_number';
+import { Icon } from './icon';
+import { AnimatedNumber } from './animated_number';

-export default class IconButton extends React.PureComponent {
-
-  static propTypes = {
-    className: PropTypes.string,
-    title: PropTypes.string.isRequired,
-    icon: PropTypes.string.isRequired,
-    onClick: PropTypes.func,
-    onMouseDown: PropTypes.func,
-    onKeyDown: PropTypes.func,
-    onKeyPress: PropTypes.func,
-    size: PropTypes.number,
-    active: PropTypes.bool,
-    expanded: PropTypes.bool,
-    style: PropTypes.object,
-    activeStyle: PropTypes.object,
-    disabled: PropTypes.bool,
-    inverted: PropTypes.bool,
-    animate: PropTypes.bool,
-    overlay: PropTypes.bool,
-    tabIndex: PropTypes.number,
-    counter: PropTypes.number,
-    obfuscateCount: PropTypes.bool,
-    href: PropTypes.string,
-    ariaHidden: PropTypes.bool,
-  };
+type Props = {
+  className?: string;
+  title: string;
+  icon: string;
+  onClick?: React.MouseEventHandler<HTMLButtonElement>;
+  onMouseDown?: React.MouseEventHandler<HTMLButtonElement>;
+  onKeyDown?: React.KeyboardEventHandler<HTMLButtonElement>;
+  onKeyPress?: React.KeyboardEventHandler<HTMLButtonElement>;
+  size: number;
+  active: boolean;
+  expanded?: boolean;
+  style?: React.CSSProperties;
+  activeStyle?: React.CSSProperties;
+  disabled: boolean;
+  inverted?: boolean;
+  animate: boolean;
+  overlay: boolean;
+  tabIndex: number;
+  counter?: number;
+  obfuscateCount?: boolean;
+  href?: string;
+  ariaHidden: boolean;
+}
+type States = {
+  activate: boolean,
+  deactivate: boolean,
+}
+export default class IconButton extends React.PureComponent<Props, States> {

  static defaultProps = {
    size: 18,
@ -45,7 +47,7 @@ export default class IconButton extends React.PureComponent {
    deactivate: false,
  };

-  componentWillReceiveProps (nextProps) {
+  UNSAFE_componentWillReceiveProps (nextProps: Props) {
    if (!nextProps.animate) return;

    if (this.props.active && !nextProps.active) {
@ -55,27 +57,27 @@ export default class IconButton extends React.PureComponent {
    }
  }

-  handleClick = (e) =>  {
+  handleClick: React.MouseEventHandler<HTMLButtonElement> = (e) =>  {
    e.preventDefault();

-    if (!this.props.disabled) {
+    if (!this.props.disabled && this.props.onClick != null) {
      this.props.onClick(e);
    }
  };

-  handleKeyPress = (e) => {
+  handleKeyPress: React.KeyboardEventHandler<HTMLButtonElement> = (e) => {
    if (this.props.onKeyPress && !this.props.disabled) {
      this.props.onKeyPress(e);
    }
  };

-  handleMouseDown = (e) => {
+  handleMouseDown: React.MouseEventHandler<HTMLButtonElement> = (e) => {
    if (!this.props.disabled && this.props.onMouseDown) {
      this.props.onMouseDown(e);
    }
  };

-  handleKeyDown = (e) => {
+  handleKeyDown: React.KeyboardEventHandler<HTMLButtonElement> = (e) => {
    if (!this.props.disabled && this.props.onKeyDown) {
      this.props.onKeyDown(e);
    }
@ -132,7 +134,7 @@ export default class IconButton extends React.PureComponent {
      </React.Fragment>
    );

-    if (href && !this.prop) {
+    if (href != null) {
      contents = (
        <a href={href} target='_blank' rel='noopener noreferrer'>
          {contents}
--- a/app/javascript/mastodon/components/media_gallery.jsx
+++ b/app/javascript/mastodon/components/media_gallery.jsx
@ -81,12 +81,10 @@ class Item extends React.PureComponent {
  render () {
    const { attachment, lang, index, size, standalone, displayWidth, visible } = this.props;

+    let badges = [], thumbnail;
+
    let width  = 50;
    let height = 100;
-    let top    = 'auto';
-    let left   = 'auto';
-    let bottom = 'auto';
-    let right  = 'auto';

    if (size === 1) {
      width = 100;
@ -96,45 +94,13 @@ class Item extends React.PureComponent {
      height = 50;
    }

-    if (size === 2) {
-      if (index === 0) {
-        right = '2px';
-      } else {
-        left = '2px';
-      }
-    } else if (size === 3) {
-      if (index === 0) {
-        right = '2px';
-      } else if (index > 0) {
-        left = '2px';
-      }
-
-      if (index === 1) {
-        bottom = '2px';
-      } else if (index > 1) {
-        top = '2px';
-      }
-    } else if (size === 4) {
-      if (index === 0 || index === 2) {
-        right = '2px';
-      }
-
-      if (index === 1 || index === 3) {
-        left = '2px';
-      }
-
-      if (index < 2) {
-        bottom = '2px';
-      } else {
-        top = '2px';
-      }
+    if (attachment.get('description')?.length > 0) {
+      badges.push(<span key='alt' className='media-gallery__gifv__label'>ALT</span>);
    }

-    let thumbnail = '';
-
    if (attachment.get('type') === 'unknown') {
      return (
-        <div className={classNames('media-gallery__item', { standalone })} key={attachment.get('id')} style={{ left: left, top: top, right: right, bottom: bottom, width: `${width}%`, height: `${height}%` }}>
+        <div className={classNames('media-gallery__item', { standalone, 'media-gallery__item--tall': height === 100, 'media-gallery__item--wide': width === 100 })} key={attachment.get('id')}>
          <a className='media-gallery__item-thumbnail' href={attachment.get('remote_url') || attachment.get('url')} style={{ cursor: 'pointer' }} title={attachment.get('description')} lang={lang} target='_blank' rel='noopener noreferrer'>
            <Blurhash
              hash={attachment.get('blurhash')}
@ -184,6 +150,8 @@ class Item extends React.PureComponent {
    } else if (attachment.get('type') === 'gifv') {
      const autoPlay = this.getAutoPlay();

+      badges.push(<span key='gif' className='media-gallery__gifv__label'>GIF</span>);
+
      thumbnail = (
        <div className={classNames('media-gallery__gifv', { autoplay: autoPlay })}>
          <video
@ -201,14 +169,12 @@ class Item extends React.PureComponent {
            loop
            muted
          />
-
-          <span className='media-gallery__gifv__label'>GIF</span>
        </div>
      );
    }

    return (
-      <div className={classNames('media-gallery__item', { standalone })} key={attachment.get('id')} style={{ left: left, top: top, right: right, bottom: bottom, width: `${width}%`, height: `${height}%` }}>
+      <div className={classNames('media-gallery__item', { standalone, 'media-gallery__item--tall': height === 100, 'media-gallery__item--wide': width === 100 })} key={attachment.get('id')}>
        <Blurhash
          hash={attachment.get('blurhash')}
          dummy={!useBlurhash}
@ -216,7 +182,14 @@ class Item extends React.PureComponent {
            'media-gallery__preview--hidden': visible && this.state.loaded,
          })}
        />
+
        {visible && thumbnail}
+
+        {badges && (
+          <div className='media-gallery__item__badges'>
+            {badges}
+          </div>
+        )}
      </div>
    );
  }
@ -313,7 +286,7 @@ class MediaGallery extends React.PureComponent {
  }

  render () {
-    const { media, lang, intl, sensitive, height, defaultWidth, standalone, autoplay } = this.props;
+    const { media, lang, intl, sensitive, defaultWidth, standalone, autoplay } = this.props;
    const { visible } = this.state;
    const width = this.state.width || defaultWidth;

@ -322,13 +295,9 @@ class MediaGallery extends React.PureComponent {
    const style = {};

    if (this.isFullSizeEligible() && (standalone || !cropImages)) {
-      if (width) {
-        style.height = width / this.props.media.getIn([0, 'meta', 'small', 'aspect']);
-      }
-    } else if (width) {
-      style.height = width / (16/9);
+      style.aspectRatio = `${this.props.media.getIn([0, 'meta', 'small', 'aspect'])}`;
    } else {
-      style.height = height;
+      style.aspectRatio = '16 / 9';
    }

    const size     = media.take(4).size;
--- a/app/javascript/mastodon/components/picture_in_picture_placeholder.jsx
+++ b/app/javascript/mastodon/components/picture_in_picture_placeholder.jsx
@ -3,62 +3,22 @@ import PropTypes from 'prop-types';
 import Icon from 'mastodon/components/icon';
 import { removePictureInPicture } from 'mastodon/actions/picture_in_picture';
 import { connect } from 'react-redux';
-import { debounce } from 'lodash';
 import { FormattedMessage } from 'react-intl';

 class PictureInPicturePlaceholder extends React.PureComponent {

  static propTypes = {
-    width: PropTypes.number,
    dispatch: PropTypes.func.isRequired,
  };

-  state = {
-    width: this.props.width,
-    height: this.props.width && (this.props.width / (16/9)),
-  };
-
  handleClick = () => {
    const { dispatch } = this.props;
    dispatch(removePictureInPicture());
  };

-  setRef = c => {
-    this.node = c;
-
-    if (this.node) {
-      this._setDimensions();
-    }
-  };
-
-  _setDimensions () {
-    const width  = this.node.offsetWidth;
-    const height = width / (16/9);
-
-    this.setState({ width, height });
-  }
-
-  componentDidMount () {
-    window.addEventListener('resize', this.handleResize, { passive: true });
-  }
-
-  componentWillUnmount () {
-    window.removeEventListener('resize', this.handleResize);
-  }
-
-  handleResize = debounce(() => {
-    if (this.node) {
-      this._setDimensions();
-    }
-  }, 250, {
-    trailing: true,
-  });
-
  render () {
-    const { height } = this.state;
-
    return (
-      <div ref={this.setRef} className='picture-in-picture-placeholder' style={{ height }} role='button' tabIndex={0} onClick={this.handleClick}>
+      <div className='picture-in-picture-placeholder' role='button' tabIndex={0} onClick={this.handleClick}>
        <Icon id='window-restore' />
        <FormattedMessage id='picture_in_picture.restore' defaultMessage='Put it back' />
      </div>
--- a/app/javascript/mastodon/components/status.jsx
+++ b/app/javascript/mastodon/components/status.jsx
@ -416,7 +416,7 @@ class Status extends ImmutablePureComponent {
    }

    if (pictureInPicture.get('inUse')) {
-      media = <PictureInPicturePlaceholder width={this.props.cachedMediaWidth} />;
+      media = <PictureInPicturePlaceholder />;
    } else if (status.get('media_attachments').size > 0) {
      if (this.props.muted) {
        media = (
@ -465,12 +465,9 @@ class Status extends ImmutablePureComponent {
                src={attachment.get('url')}
                alt={attachment.get('description')}
                lang={status.get('language')}
-                width={this.props.cachedMediaWidth}
-                height={110}
                inline
                sensitive={status.get('sensitive')}
                onOpenVideo={this.handleOpenVideo}
-                cacheWidth={this.props.cacheMediaWidth}
                deployPictureInPicture={pictureInPicture.get('available') ? this.handleDeployPictureInPicture : undefined}
                visible={this.state.showMedia}
                onToggleVisibility={this.handleToggleMediaVisibility}
@ -503,8 +500,6 @@ class Status extends ImmutablePureComponent {
          onOpenMedia={this.handleOpenMedia}
          card={status.get('card')}
          compact
-          cacheWidth={this.props.cacheMediaWidth}
-          defaultWidth={this.props.cachedMediaWidth}
          sensitive={status.get('sensitive')}
        />
      );
--- a/app/javascript/mastodon/containers/compose_container.jsx
+++ b/app/javascript/mastodon/containers/compose_container.jsx
@ -1,7 +1,7 @@
 import React from 'react';
 import { Provider } from 'react-redux';
 import PropTypes from 'prop-types';
-import configureStore from '../store/configureStore';
+import { store } from '../store/configureStore';
 import { hydrateStore } from '../actions/store';
 import { IntlProvider, addLocaleData } from 'react-intl';
 import { getLocale } from '../locales';
@ -12,8 +12,6 @@ import { fetchCustomEmojis } from '../actions/custom_emojis';
 const { localeData, messages } = getLocale();
 addLocaleData(localeData);

-const store = configureStore();
-
 if (initialState) {
  store.dispatch(hydrateStore(initialState));
 }
--- a/app/javascript/mastodon/containers/mastodon.jsx
+++ b/app/javascript/mastodon/containers/mastodon.jsx
@ -5,7 +5,7 @@ import { IntlProvider, addLocaleData } from 'react-intl';
 import { Provider as ReduxProvider } from 'react-redux';
 import { BrowserRouter, Route } from 'react-router-dom';
 import { ScrollContext } from 'react-router-scroll-4';
-import configureStore from 'mastodon/store/configureStore';
+import { store } from 'mastodon/store/configureStore';
 import UI from 'mastodon/features/ui';
 import { fetchCustomEmojis } from 'mastodon/actions/custom_emojis';
 import { hydrateStore } from 'mastodon/actions/store';
@ -19,7 +19,6 @@ addLocaleData(localeData);

 const title = process.env.NODE_ENV === 'production' ? siteTitle : `${siteTitle} (Dev)`;

-export const store = configureStore();
 const hydrateAction = hydrateStore(initialState);

 store.dispatch(hydrateAction);
--- a/app/javascript/mastodon/features/audio/index.jsx
+++ b/app/javascript/mastodon/features/audio/index.jsx
@ -384,7 +384,7 @@ class Audio extends React.PureComponent {
  }

  _getRadius () {
-    return parseInt(((this.state.height || this.props.height) - (PADDING * this._getScaleCoefficient()) * 2) / 2);
+    return parseInt((this.state.height || this.props.height) / 2 - PADDING * this._getScaleCoefficient());
  }

  _getScaleCoefficient () {
@ -396,7 +396,7 @@ class Audio extends React.PureComponent {
  }

  _getCY() {
-    return Math.floor(this._getRadius() + (PADDING * this._getScaleCoefficient()));
+    return Math.floor((this.state.height || this.props.height) / 2);
  }

  _getAccentColor () {
@ -470,7 +470,7 @@ class Audio extends React.PureComponent {
    }

    return (
-      <div className={classNames('audio-player', { editable, inactive: !revealed })} ref={this.setPlayerRef} style={{ backgroundColor: this._getBackgroundColor(), color: this._getForegroundColor(), height: this.props.fullscreen ? '100%' : (this.state.height || this.props.height) }} onMouseEnter={this.handleMouseEnter} onMouseLeave={this.handleMouseLeave} tabIndex={0} onKeyDown={this.handleKeyDown}>
+      <div className={classNames('audio-player', { editable, inactive: !revealed })} ref={this.setPlayerRef} style={{ backgroundColor: this._getBackgroundColor(), color: this._getForegroundColor(), aspectRatio: '16 / 9' }} onMouseEnter={this.handleMouseEnter} onMouseLeave={this.handleMouseLeave} tabIndex={0} onKeyDown={this.handleKeyDown}>

        <Blurhash
          hash={blurhash}
@ -515,9 +515,16 @@ class Audio extends React.PureComponent {
        {(revealed || editable) && <img
          src={this.props.poster}
          alt=''
-          width={(this._getRadius() - TICK_SIZE) * 2}
-          height={(this._getRadius() - TICK_SIZE) * 2}
-          style={{ position: 'absolute', left: this._getCX(), top: this._getCY(), transform: 'translate(-50%, -50%)', borderRadius: '50%', pointerEvents: 'none' }}
+          style={{
+            position: 'absolute',
+            left: '50%',
+            top: '50%',
+            height: `calc(${(100 - 2 * 100 * PADDING / 982)}% - ${TICK_SIZE * 2}px)`,
+            aspectRatio: '1',
+            transform: 'translate(-50%, -50%)',
+            borderRadius: '50%',
+            pointerEvents: 'none',
+          }}
        />}

        <div className='video-player__seek' onMouseDown={this.handleMouseDown} ref={this.setSeekRef}>
--- a/app/javascript/mastodon/features/status/components/card.jsx
+++ b/app/javascript/mastodon/features/status/components/card.jsx
@ -8,7 +8,6 @@ import classnames from 'classnames';
 import Icon from 'mastodon/components/icon';
 import { useBlurhash } from 'mastodon/initial_state';
 import Blurhash from 'mastodon/components/blurhash';
-import { debounce } from 'lodash';

 const IDNA_PREFIX = 'xn--';

@ -54,8 +53,6 @@ export default class Card extends React.PureComponent {
    card: ImmutablePropTypes.map,
    onOpenMedia: PropTypes.func.isRequired,
    compact: PropTypes.bool,
-    defaultWidth: PropTypes.number,
-    cacheWidth: PropTypes.func,
    sensitive: PropTypes.bool,
  };

@ -64,7 +61,6 @@ export default class Card extends React.PureComponent {
  };

  state = {
-    width: this.props.defaultWidth || 280,
    previewLoaded: false,
    embedded: false,
    revealed: !this.props.sensitive,
@ -87,24 +83,6 @@ export default class Card extends React.PureComponent {
    window.removeEventListener('resize', this.handleResize);
  }

-  _setDimensions () {
-    const width = this.node.offsetWidth;
-
-    if (this.props.cacheWidth) {
-      this.props.cacheWidth(width);
-    }
-
-    this.setState({ width });
-  }
-
-  handleResize = debounce(() => {
-    if (this.node) {
-      this._setDimensions();
-    }
-  }, 250, {
-    trailing: true,
-  });
-
  handlePhotoClick = () => {
    const { card, onOpenMedia } = this.props;

@ -138,10 +116,6 @@ export default class Card extends React.PureComponent {

  setRef = c => {
    this.node = c;
-
-    if (this.node) {
-      this._setDimensions();
-    }
  };

  handleImageLoad = () => {
@ -157,36 +131,31 @@ export default class Card extends React.PureComponent {
  renderVideo () {
    const { card }  = this.props;
    const content   = { __html: addAutoPlay(card.get('html')) };
-    const { width } = this.state;
-    const ratio     = card.get('width') / card.get('height');
-    const height    = width / ratio;

    return (
      <div
        ref={this.setRef}
        className='status-card__image status-card-video'
        dangerouslySetInnerHTML={content}
-        style={{ height }}
+        style={{ aspectRatio: `${card.get('width')} / ${card.get('height')}` }}
      />
    );
  }

  render () {
    const { card, compact } = this.props;
-    const { width, embedded, revealed } = this.state;
+    const { embedded, revealed } = this.state;

    if (card === null) {
      return null;
    }

    const provider    = card.get('provider_name').length === 0 ? decodeIDNA(getHostname(card.get('url'))) : card.get('provider_name');
-    const horizontal  = (!compact && card.get('width') > card.get('height') && (card.get('width') + 100 >= width)) || card.get('type') !== 'link' || embedded;
+    const horizontal  = (!compact && card.get('width') > card.get('height')) || card.get('type') !== 'link' || embedded;
    const interactive = card.get('type') !== 'link';
    const className   = classnames('status-card', { horizontal, compact, interactive });
    const title       = interactive ? <a className='status-card__title' href={card.get('url')} title={card.get('title')} rel='noopener noreferrer' target='_blank'><strong>{card.get('title')}</strong></a> : <strong className='status-card__title' title={card.get('title')}>{card.get('title')}</strong>;
    const language    = card.get('language') || '';
-    const ratio       = card.get('width') / card.get('height');
-    const height      = (compact && !embedded) ? (width / (16 / 9)) : (width / ratio);

    const description = (
      <div className='status-card__content' lang={language}>
@ -196,6 +165,14 @@ export default class Card extends React.PureComponent {
      </div>
    );

+    const thumbnailStyle = {
+      visibility: revealed? null : 'hidden',
+    };
+
+    if (horizontal) {
+      thumbnailStyle.aspectRatio = (compact && !embedded) ? '16 / 9' : `${card.get('width')} / ${card.get('height')}`;
+    }
+
    let embed     = '';
    let canvas = (
      <Blurhash
@ -206,7 +183,7 @@ export default class Card extends React.PureComponent {
        dummy={!useBlurhash}
      />
    );
-    let thumbnail = <img src={card.get('image')} alt='' style={{ width: horizontal ? width : null, height: horizontal ? height : null, visibility: revealed ? null : 'hidden' }} onLoad={this.handleImageLoad} className='status-card__image-image' />;
+    let thumbnail = <img src={card.get('image')} alt='' style={thumbnailStyle} onLoad={this.handleImageLoad} className='status-card__image-image' />;
    let spoilerButton = (
      <button type='button' onClick={this.handleReveal} className='spoiler-button__overlay'>
        <span className='spoiler-button__overlay__label'><FormattedMessage id='status.sensitive_warning' defaultMessage='Sensitive content' /></span>
--- a/app/javascript/mastodon/features/ui/index.jsx
+++ b/app/javascript/mastodon/features/ui/index.jsx
@ -362,7 +362,7 @@ class UI extends React.PureComponent {

    if (layout !== this.props.layout) {
      this.handleLayoutChange.cancel();
-      this.props.dispatch(changeLayout(layout));
+      this.props.dispatch(changeLayout({ layout }));
    } else {
      this.handleLayoutChange();
    }
--- a/app/javascript/mastodon/features/video/index.jsx
+++ b/app/javascript/mastodon/features/video/index.jsx
@ -2,7 +2,7 @@ import React from 'react';
 import PropTypes from 'prop-types';
 import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
 import { is } from 'immutable';
-import { throttle, debounce } from 'lodash';
+import { throttle } from 'lodash';
 import classNames from 'classnames';
 import { isFullscreen, requestFullscreen, exitFullscreen } from '../ui/util/fullscreen';
 import { displayMedia, useBlurhash } from '../../initial_state';
@ -102,8 +102,6 @@ class Video extends React.PureComponent {
    src: PropTypes.string.isRequired,
    alt: PropTypes.string,
    lang: PropTypes.string,
-    width: PropTypes.number,
-    height: PropTypes.number,
    sensitive: PropTypes.bool,
    currentTime: PropTypes.number,
    onOpenVideo: PropTypes.func,
@ -112,7 +110,6 @@ class Video extends React.PureComponent {
    inline: PropTypes.bool,
    editable: PropTypes.bool,
    alwaysVisible: PropTypes.bool,
-    cacheWidth: PropTypes.func,
    visible: PropTypes.bool,
    onToggleVisibility: PropTypes.func,
    deployPictureInPicture: PropTypes.func,
@ -135,7 +132,6 @@ class Video extends React.PureComponent {
    volume: 0.5,
    paused: true,
    dragging: false,
-    containerWidth: this.props.width,
    fullscreen: false,
    hovered: false,
    muted: false,
@ -144,24 +140,8 @@ class Video extends React.PureComponent {

  setPlayerRef = c => {
    this.player = c;
-
-    if (this.player) {
-      this._setDimensions();
-    }
  };

-  _setDimensions () {
-    const width = this.player.offsetWidth;
-
-    if (this.props.cacheWidth) {
-      this.props.cacheWidth(width);
-    }
-
-    this.setState({
-      containerWidth: width,
-    });
-  }
-
  setVideoRef = c => {
    this.video = c;

@ -370,12 +350,10 @@ class Video extends React.PureComponent {
    document.addEventListener('MSFullscreenChange', this.handleFullscreenChange, true);

    window.addEventListener('scroll', this.handleScroll);
-    window.addEventListener('resize', this.handleResize, { passive: true });
  }

  componentWillUnmount () {
    window.removeEventListener('scroll', this.handleScroll);
-    window.removeEventListener('resize', this.handleResize);

    document.removeEventListener('fullscreenchange', this.handleFullscreenChange, true);
    document.removeEventListener('webkitfullscreenchange', this.handleFullscreenChange, true);
@ -404,14 +382,6 @@ class Video extends React.PureComponent {
    }
  }

-  handleResize = debounce(() => {
-    if (this.player) {
-      this._setDimensions();
-    }
-  }, 250, {
-    trailing: true,
-  });
-
  handleScroll = throttle(() => {
    if (!this.video) {
      return;
@ -525,17 +495,12 @@ class Video extends React.PureComponent {

  render () {
    const { preview, src, inline, onOpenVideo, onCloseVideo, intl, alt, lang, detailed, sensitive, editable, blurhash, autoFocus } = this.props;
-    const { containerWidth, currentTime, duration, volume, buffer, dragging, paused, fullscreen, hovered, muted, revealed } = this.state;
+    const { currentTime, duration, volume, buffer, dragging, paused, fullscreen, hovered, muted, revealed } = this.state;
    const progress = Math.min((currentTime / duration) * 100, 100);
    const playerStyle = {};

-    let { width, height } = this.props;
-
-    if (inline && containerWidth) {
-      width  = containerWidth;
-      height = containerWidth / (16/9);
-
-      playerStyle.height = height;
+    if (inline) {
+      playerStyle.aspectRatio = '16 / 9';
    }

    let preload;
@ -586,8 +551,6 @@ class Video extends React.PureComponent {
          aria-label={alt}
          title={alt}
          lang={lang}
-          width={width}
-          height={height}
          volume={volume}
          onClick={this.togglePlay}
          onKeyDown={this.handleVideoKeyDown}
@ -596,6 +559,7 @@ class Video extends React.PureComponent {
          onLoadedData={this.handleLoadedData}
          onProgress={this.handleProgress}
          onVolumeChange={this.handleVolumeChange}
+          style={{ ...playerStyle, width: '100%' }}
        />}

        <div className={classNames('spoiler-button', { 'spoiler-button--hidden': revealed || editable })}>
--- a/app/javascript/mastodon/is_mobile.ts
+++ b/app/javascript/mastodon/is_mobile.ts
@ -1,21 +1,12 @@
-// @ts-check
-
 import { supportsPassiveEvents } from 'detect-passive-events';
-// @ts-expect-error
-import { forceSingleColumn } from 'mastodon/initial_state';
+import { forceSingleColumn } from './initial_state';

 const LAYOUT_BREAKPOINT = 630;

-/**
- * @param {number} width
- * @returns {boolean}
- */
-export const isMobile = width => width <= LAYOUT_BREAKPOINT;
+export const isMobile = (width: number) => width <= LAYOUT_BREAKPOINT;

-/**
- * @returns {string}
- */
-export const layoutFromWindow = () => {
+export type LayoutType = 'mobile' | 'single-column' | 'multi-column';
+export const layoutFromWindow = (): LayoutType => {
  if (isMobile(window.innerWidth)) {
    return 'mobile';
  } else if (forceSingleColumn) {
@ -25,8 +16,9 @@ export const layoutFromWindow = () => {
  }
 };

+// eslint-disable-next-line @typescript-eslint/ban-ts-comment
 // @ts-expect-error
-const iOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
+const iOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && window.MSStream != null;

 const listenerOptions = supportsPassiveEvents ? { passive: true } : false;

--- a/app/javascript/mastodon/main.jsx
+++ b/app/javascript/mastodon/main.jsx
@ -1,7 +1,8 @@
 import React from 'react';
 import ReactDOM from 'react-dom';
 import { setupBrowserNotifications } from 'mastodon/actions/notifications';
-import Mastodon, { store } from 'mastodon/containers/mastodon';
+import Mastodon from 'mastodon/containers/mastodon';
+import { store } from 'mastodon/store/configureStore';
 import { me } from 'mastodon/initial_state';
 import ready from 'mastodon/ready';

--- a/app/javascript/mastodon/permissions.ts
+++ b/app/javascript/mastodon/permissions.ts
--- a/app/javascript/mastodon/reducers/meta.js
+++ b/app/javascript/mastodon/reducers/meta.js
@ -1,5 +1,5 @@
 import { STORE_HYDRATE } from 'mastodon/actions/store';
-import { APP_LAYOUT_CHANGE } from 'mastodon/actions/app';
+import { changeLayout } from 'mastodon/actions/app';
 import { Map as ImmutableMap } from 'immutable';
 import { layoutFromWindow } from 'mastodon/is_mobile';

@ -14,8 +14,8 @@ export default function meta(state = initialState, action) {
  switch(action.type) {
  case STORE_HYDRATE:
    return state.merge(action.state.get('meta')).set('permissions', action.state.getIn(['role', 'permissions']));
-  case APP_LAYOUT_CHANGE:
-    return state.set('layout', action.layout);
+  case changeLayout.type:
+    return state.set('layout', action.payload.layout);
  default:
    return state;
  }
--- a/app/javascript/mastodon/reducers/missed_updates.js
+++ b/app/javascript/mastodon/reducers/missed_updates.js
@ -1,21 +0,0 @@
-import { Map as ImmutableMap } from 'immutable';
-import { NOTIFICATIONS_UPDATE } from 'mastodon/actions/notifications';
-import { APP_FOCUS, APP_UNFOCUS } from 'mastodon/actions/app';
-
-const initialState = ImmutableMap({
-  focused: true,
-  unread: 0,
-});
-
-export default function missed_updates(state = initialState, action) {
-  switch(action.type) {
-  case APP_FOCUS:
-    return state.set('focused', true).set('unread', 0);
-  case APP_UNFOCUS:
-    return state.set('focused', false);
-  case NOTIFICATIONS_UPDATE:
-    return state.get('focused') ? state : state.update('unread', x => x + 1);
-  default:
-    return state;
-  }
-}
--- a/app/javascript/mastodon/reducers/missed_updates.ts
+++ b/app/javascript/mastodon/reducers/missed_updates.ts
@ -0,0 +1,31 @@
+import { Record } from 'immutable';
+import type { Action } from 'redux';
+import { NOTIFICATIONS_UPDATE } from '../actions/notifications';
+import { focusApp, unfocusApp } from '../actions/app';
+
+type MissedUpdatesState = {
+  focused: boolean;
+  unread: number;
+};
+const initialState = Record<MissedUpdatesState>({
+  focused: true,
+  unread: 0,
+})();
+
+export default function missed_updates(
+  state = initialState,
+  action: Action<string>,
+) {
+  switch (action.type) {
+  case focusApp.type:
+    return state.set('focused', true).set('unread', 0);
+  case unfocusApp.type:
+    return state.set('focused', false);
+  case NOTIFICATIONS_UPDATE:
+    return state.get('focused')
+      ? state
+      : state.update('unread', (x) => x + 1);
+  default:
+    return state;
+  }
+}
--- a/app/javascript/mastodon/reducers/notifications.js
+++ b/app/javascript/mastodon/reducers/notifications.js
@ -23,8 +23,8 @@ import {
  MARKERS_FETCH_SUCCESS,
 } from '../actions/markers';
 import {
-  APP_FOCUS,
-  APP_UNFOCUS,
+  focusApp,
+  unfocusApp,
 } from '../actions/app';
 import { DOMAIN_BLOCK_SUCCESS } from 'mastodon/actions/domain_blocks';
 import { TIMELINE_DELETE, TIMELINE_DISCONNECT } from '../actions/timelines';
@ -258,9 +258,9 @@ export default function notifications(state = initialState, action) {
    return updateMounted(state);
  case NOTIFICATIONS_UNMOUNT:
    return state.update('mounted', count => count - 1);
-  case APP_FOCUS:
+  case focusApp.type:
    return updateVisibility(state, true);
-  case APP_UNFOCUS:
+  case unfocusApp.type:
    return updateVisibility(state, false);
  case NOTIFICATIONS_LOAD_PENDING:
    return state.update('items', list => state.get('pendingItems').concat(list.take(40))).set('pendingItems', ImmutableList()).set('unread', 0);
--- a/app/javascript/flavours/glitch/scroll.js
+++ b/app/javascript/flavours/glitch/scroll.js
@ -1,6 +1,5 @@
-const easingOutQuint = (x, t, b, c, d) => c * ((t = t / d - 1) * t * t * t * t + 1) + b;
-
-const scroll = (node, key, target) => {
+const easingOutQuint = (x: number, t: number, b: number, c: number, d: number) => c * ((t = t / d - 1) * t * t * t * t + 1) + b;
+const scroll = (node: Element, key: 'scrollTop' | 'scrollLeft', target: number) => {
  const startTime = Date.now();
  const offset    = node[key];
  const gap       = target - offset;
@ -28,5 +27,5 @@ const scroll = (node, key, target) => {

 const isScrollBehaviorSupported = 'scrollBehavior' in document.documentElement.style;

-export const scrollRight = (node, position) => isScrollBehaviorSupported ? node.scrollTo({ left: position, behavior: 'smooth' }) : scroll(node, 'scrollLeft', position);
-export const scrollTop = (node) => isScrollBehaviorSupported ? node.scrollTo({ top: 0, behavior: 'smooth' }) : scroll(node, 'scrollTop', 0);
+export const scrollRight = (node: Element, position: number) => isScrollBehaviorSupported ? node.scrollTo({ left: position, behavior: 'smooth' }) : scroll(node, 'scrollLeft', position);
+export const scrollTop = (node: Element) => isScrollBehaviorSupported ? node.scrollTo({ top: 0, behavior: 'smooth' }) : scroll(node, 'scrollTop', 0);
--- a/app/javascript/mastodon/store/configureStore.js
+++ b/app/javascript/mastodon/store/configureStore.js
@ -1,15 +1,16 @@
-import { createStore, applyMiddleware, compose } from 'redux';
+import { configureStore } from '@reduxjs/toolkit';
 import thunk from 'redux-thunk';
 import appReducer from '../reducers';
 import loadingBarMiddleware from '../middleware/loading_bar';
 import errorsMiddleware from '../middleware/errors';
 import soundsMiddleware from '../middleware/sounds';

-export default function configureStore() {
-  return createStore(appReducer, compose(applyMiddleware(
+export const store = configureStore({
+  reducer: appReducer,
+  middleware: [
    thunk,
    loadingBarMiddleware({ promiseTypeSuffixes: ['REQUEST', 'SUCCESS', 'FAIL'] }),
    errorsMiddleware(),
    soundsMiddleware(),
-  ), window.__REDUX_DEVTOOLS_EXTENSION__ ? window.__REDUX_DEVTOOLS_EXTENSION__() : f => f));
-}
+  ],
+});
--- a/app/javascript/mastodon/utils/base64.ts
+++ b/app/javascript/mastodon/utils/base64.ts
@ -1,4 +1,4 @@
-export const decode = base64 => {
+export const decode = (base64: string): Uint8Array => {
  const rawData = window.atob(base64);
  const outputArray = new Uint8Array(rawData.length);

--- a/app/javascript/flavours/glitch/utils/filters.js
+++ b/app/javascript/flavours/glitch/utils/filters.js
@ -1,4 +1,4 @@
-export const toServerSideType = columnType => {
+export const toServerSideType = (columnType: string) => {
  switch (columnType) {
  case 'home':
  case 'notifications':
--- a/app/javascript/mastodon/utils/hashtags.ts
+++ b/app/javascript/mastodon/utils/hashtags.ts
--- a/app/javascript/mastodon/utils/numbers.ts
+++ b/app/javascript/mastodon/utils/numbers.ts
@ -1,23 +1,19 @@
-// @ts-check
+import type { ValueOf } from '../../types/util';

 export const DECIMAL_UNITS = Object.freeze({
  ONE: 1,
  TEN: 10,
-  HUNDRED: Math.pow(10, 2),
-  THOUSAND: Math.pow(10, 3),
-  MILLION: Math.pow(10, 6),
-  BILLION: Math.pow(10, 9),
-  TRILLION: Math.pow(10, 12),
+  HUNDRED: 100,
+  THOUSAND: 1_000,
+  MILLION: 1_000_000,
+  BILLION: 1_000_000_000,
+  TRILLION: 1_000_000_000_000,
 });
+export type DecimalUnits = ValueOf<typeof DECIMAL_UNITS>;

 const TEN_THOUSAND = DECIMAL_UNITS.THOUSAND * 10;
 const TEN_MILLIONS = DECIMAL_UNITS.MILLION * 10;

-/**
- * @typedef {[number, number, number]} ShortNumber
- * Array of: shorten number, unit of shorten number and maximum fraction digits
- */
-
 /**
 * @param {number} sourceNumber Number to convert to short number
 * @returns {ShortNumber} Calculated short number
@ -25,7 +21,8 @@ const TEN_MILLIONS = DECIMAL_UNITS.MILLION * 10;
 * shortNumber(5936);
 * // => [5.936, 1000, 1]
 */
-export function toShortNumber(sourceNumber) {
+export type ShortNumber = [number, DecimalUnits, 0 | 1] // Array of: shorten number, unit of shorten number and maximum fraction digits
+export function toShortNumber(sourceNumber: number): ShortNumber {
  if (sourceNumber < DECIMAL_UNITS.THOUSAND) {
    return [sourceNumber, DECIMAL_UNITS.ONE, 0];
  } else if (sourceNumber < DECIMAL_UNITS.MILLION) {
@ -59,20 +56,16 @@ export function toShortNumber(sourceNumber) {
 * pluralReady(1793, DECIMAL_UNITS.THOUSAND)
 * // => 1790
 */
-export function pluralReady(sourceNumber, division) {
+export function pluralReady(sourceNumber: number, division: DecimalUnits): number {
  if (division == null || division < DECIMAL_UNITS.HUNDRED) {
    return sourceNumber;
  }

-  let closestScale = division / DECIMAL_UNITS.TEN;
+  const closestScale = division / DECIMAL_UNITS.TEN;

  return Math.trunc(sourceNumber / closestScale) * closestScale;
 }

-/**
- * @param {number} num
- * @returns {number}
- */
-export function roundTo10(num) {
+export function roundTo10(num: number): number {
  return Math.round(num * 0.1) / 0.1;
 }
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@ -1799,7 +1799,6 @@ a.account__display-name {
 .status__avatar {
  width: 46px;
  height: 46px;
-  box-shadow: 0 0 0 2px $ui-base-color;
 }

 .muted {
@ -3125,6 +3124,10 @@ $ui-header-height: 55px;
 }

 .compose-form__highlightable {
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+  flex: 0 1 auto;
  border-radius: 4px;
  transition: box-shadow 300ms linear;

@ -3819,6 +3822,10 @@ a.status-card {
 }

 .status-card-video {
+  // Firefox has a bug where frameborder=0 iframes add some extra blank space
+  // see https://bugzilla.mozilla.org/show_bug.cgi?id=155174
+  overflow: hidden;
+
  iframe {
    width: 100%;
    height: 100%;
@ -6345,30 +6352,25 @@ a.status-card.compact:hover {
  z-index: 9999;
 }

-.media-gallery__gifv__label {
-  display: block;
+.media-gallery__item__badges {
  position: absolute;
-  color: $primary-text-color;
-  background: rgba($base-overlay-background, 0.5);
  bottom: 6px;
  inset-inline-start: 6px;
-  padding: 2px 6px;
-  border-radius: 2px;
-  font-size: 11px;
-  font-weight: 600;
-  z-index: 1;
-  pointer-events: none;
-  opacity: 0.9;
-  transition: opacity 0.1s ease;
-  line-height: 18px;
+  display: flex;
+  gap: 2px;
 }

-.media-gallery__gifv {
-  &:hover {
-    .media-gallery__gifv__label {
-      opacity: 1;
-    }
-  }
+.media-gallery__gifv__label {
+  display: block;
+  color: $white;
+  background: rgba($black, 0.65);
+  padding: 2px 6px;
+  border-radius: 4px;
+  font-size: 11px;
+  font-weight: 700;
+  z-index: 1;
+  pointer-events: none;
+  line-height: 18px;
 }

 .attachment-list {
@ -6443,17 +6445,28 @@ a.status-card.compact:hover {
  position: relative;
  width: 100%;
  min-height: 64px;
+  display: grid;
+  grid-template-columns: 50% 50%;
+  grid-template-rows: 50% 50%;
+  gap: 2px;
 }

 .media-gallery__item {
  border: 0;
  box-sizing: border-box;
  display: block;
-  float: left;
  position: relative;
  border-radius: 4px;
  overflow: hidden;

+  &--tall {
+    grid-row: span 2;
+  }
+
+  &--wide {
+    grid-column: span 2;
+  }
+
  &.standalone {
    .media-gallery__item-gifv-thumbnail {
      transform: none;
@ -8351,6 +8364,7 @@ noscript {
  font-weight: 500;
  cursor: pointer;
  color: $darker-text-color;
+  aspect-ratio: 16 / 9;

  i {
    display: block;
--- a/app/javascript/types/resources.ts
+++ b/app/javascript/types/resources.ts
@ -1,8 +1,4 @@
-interface MastodonMap<T> {
-  get<K extends keyof T>(key: K): T[K];
-  has<K extends keyof T>(key: K): boolean;
-  set<K extends keyof T>(key: K, value: T[K]): this;
-}
+import type { Record } from 'immutable';

 type AccountValues = {
  id: number;
@ -10,4 +6,5 @@ type AccountValues = {
  avatar_static: string;
  [key: string]: any;
 };
-export type Account = MastodonMap<AccountValues>;
+
+export type Account = Record<AccountValues>;
--- a/app/javascript/types/util.ts
+++ b/app/javascript/types/util.ts
@ -0,0 +1 @@
+export type ValueOf<T> = T[keyof T];
--- a/app/lib/activity_tracker.rb
+++ b/app/lib/activity_tracker.rb
@ -43,7 +43,7 @@ class ActivityTracker

    case @type
    when :basic
-      redis.mget(*keys).map(&:to_i).sum
+      redis.mget(*keys).sum(&:to_i)
    when :unique
      redis.pfcount(*keys)
    end
--- a/app/lib/activitypub/activity/announce.rb
+++ b/app/lib/activitypub/activity/announce.rb
@ -4,7 +4,7 @@ class ActivityPub::Activity::Announce < ActivityPub::Activity
  def perform
    return reject_payload! if delete_arrived_first?(@json['id']) || !related_to_local_activity?

-    with_lock("announce:#{value_or_id(@object)}") do
+    with_redis_lock("announce:#{value_or_id(@object)}") do
      original_status = status_from_object

      return reject_payload! if original_status.nil? || !announceable?(original_status)
--- a/app/lib/activitypub/activity/create.rb
+++ b/app/lib/activitypub/activity/create.rb
@ -47,7 +47,7 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
  def create_status
    return reject_payload! if unsupported_object_type? || non_matching_uri_hosts?(@account.uri, object_uri) || tombstone_exists? || !related_to_local_activity?

-    with_lock("create:#{object_uri}") do
+    with_redis_lock("create:#{object_uri}") do
      return if delete_arrived_first?(object_uri) || poll_vote?

      @status = find_existing_status
@ -319,7 +319,7 @@ class ActivityPub::Activity::Create < ActivityPub::Activity
    poll = replied_to_status.preloadable_poll
    already_voted = true

-    with_lock("vote:#{replied_to_status.poll_id}:#{@account.id}") do
+    with_redis_lock("vote:#{replied_to_status.poll_id}:#{@account.id}") do
      already_voted = poll.votes.where(account: @account).exists?
      poll.votes.create!(account: @account, choice: poll.options.index(@object['name']), uri: object_uri)
    end
--- a/app/lib/activitypub/activity/delete.rb
+++ b/app/lib/activitypub/activity/delete.rb
@ -12,7 +12,7 @@ class ActivityPub::Activity::Delete < ActivityPub::Activity
  private

  def delete_person
-    with_lock("delete_in_progress:#{@account.id}", autorelease: 2.hours, raise_on_failure: false) do
+    with_redis_lock("delete_in_progress:#{@account.id}", autorelease: 2.hours, raise_on_failure: false) do
      DeleteAccountService.new.call(@account, reserve_username: false, skip_activitypub: true)
    end
  end
@ -20,14 +20,14 @@ class ActivityPub::Activity::Delete < ActivityPub::Activity
  def delete_note
    return if object_uri.nil?

-    with_lock("delete_status_in_progress:#{object_uri}", raise_on_failure: false) do
+    with_redis_lock("delete_status_in_progress:#{object_uri}", raise_on_failure: false) do
      unless non_matching_uri_hosts?(@account.uri, object_uri)
        # This lock ensures a concurrent `ActivityPub::Activity::Create` either
        # does not create a status at all, or has finished saving it to the
        # database before we try to load it.
        # Without the lock, `delete_later!` could be called after `delete_arrived_first?`
        # and `Status.find` before `Status.create!`
-        with_lock("create:#{object_uri}") { delete_later!(object_uri) }
+        with_redis_lock("create:#{object_uri}") { delete_later!(object_uri) }

        Tombstone.find_or_create_by(uri: object_uri, account: @account)
      end
--- a/app/lib/activitypub/case_transform.rb
+++ b/app/lib/activitypub/case_transform.rb
@ -13,7 +13,7 @@ module ActivityPub::CaseTransform
      when Symbol then camel_lower(value.to_s).to_sym
      when String
        camel_lower_cache[value] ||= if value.start_with?('_:')
-                                       "_:#{value.gsub(/\A_:/, '').underscore.camelize(:lower)}"
+                                       "_:#{value.delete_prefix('_:').underscore.camelize(:lower)}"
                                     else
                                       value.underscore.camelize(:lower)
                                     end
--- a/app/lib/feed_manager.rb
+++ b/app/lib/feed_manager.rb
@ -407,10 +407,10 @@ class FeedManager
    return true  if crutches[:languages][status.account_id].present? && status.language.present? && !crutches[:languages][status.account_id].include?(status.language)

    check_for_blocks = crutches[:active_mentions][status.id] || []
-    check_for_blocks.concat([status.account_id])
+    check_for_blocks.push(status.account_id)

    if status.reblog?
-      check_for_blocks.concat([status.reblog.account_id])
+      check_for_blocks.push(status.reblog.account_id)
      check_for_blocks.concat(crutches[:active_mentions][status.reblog_of_id] || [])
    end

@ -446,7 +446,7 @@ class FeedManager
    # the notification has been checked for mute/block. Therefore, it's not
    # necessary to check the author of the toot for mute/block again
    check_for_blocks = status.active_mentions.pluck(:account_id)
-    check_for_blocks.concat([status.in_reply_to_account]) if status.reply? && !status.in_reply_to_account_id.nil?
+    check_for_blocks.push(status.in_reply_to_account) if status.reply? && !status.in_reply_to_account_id.nil?

    should_filter   = blocks_or_mutes?(receiver_id, check_for_blocks, :mentions)                                                         # Filter if it's from someone I blocked, in reply to someone I blocked, or mentioning someone I blocked (or muted)
    should_filter ||= (status.account.silenced? && !Follow.where(account_id: receiver_id, target_account_id: status.account_id).exists?) # of if the account is silenced and I'm not following them
@ -593,10 +593,10 @@ class FeedManager

    check_for_blocks = statuses.flat_map do |s|
      arr = crutches[:active_mentions][s.id] || []
-      arr.concat([s.account_id])
+      arr.push(s.account_id)

      if s.reblog?
-        arr.concat([s.reblog.account_id])
+        arr.push(s.reblog.account_id)
        arr.concat(crutches[:active_mentions][s.reblog_of_id] || [])
      end

--- a/app/lib/importer/accounts_index_importer.rb
+++ b/app/lib/importer/accounts_index_importer.rb
@ -6,8 +6,8 @@ class Importer::AccountsIndexImporter < Importer::BaseImporter
      in_work_unit(tmp) do |accounts|
        bulk = Chewy::Index::Import::BulkBuilder.new(index, to_index: accounts).bulk_body

-        indexed = bulk.select { |entry| entry[:index] }.size
-        deleted = bulk.select { |entry| entry[:delete] }.size
+        indexed = bulk.count { |entry| entry[:index] }
+        deleted = bulk.count { |entry| entry[:delete] }

        Chewy::Index::Import::BulkRequest.new(index).perform(bulk)

--- a/app/lib/importer/tags_index_importer.rb
+++ b/app/lib/importer/tags_index_importer.rb
@ -6,8 +6,8 @@ class Importer::TagsIndexImporter < Importer::BaseImporter
      in_work_unit(tmp) do |tags|
        bulk = Chewy::Index::Import::BulkBuilder.new(index, to_index: tags).bulk_body

-        indexed = bulk.select { |entry| entry[:index] }.size
-        deleted = bulk.select { |entry| entry[:delete] }.size
+        indexed = bulk.count { |entry| entry[:index] }
+        deleted = bulk.count { |entry| entry[:delete] }

        Chewy::Index::Import::BulkRequest.new(index).perform(bulk)

--- a/app/lib/permalink_redirector.rb
+++ b/app/lib/permalink_redirector.rb
@ -8,21 +8,51 @@ class PermalinkRedirector
  end

  def redirect_path
-    if path_segments[0].present? && path_segments[0].start_with?('@') && path_segments[1] =~ /\d/
-      find_status_url_by_id(path_segments[1])
-    elsif path_segments[0].present? && path_segments[0].start_with?('@')
-      find_account_url_by_name(path_segments[0])
-    elsif path_segments[0] == 'statuses' && path_segments[1] =~ /\d/
-      find_status_url_by_id(path_segments[1])
-    elsif path_segments[0] == 'accounts' && path_segments[1] =~ /\d/
-      find_account_url_by_id(path_segments[1])
+    if at_username_status_request? || statuses_status_request?
+      find_status_url_by_id(second_segment)
+    elsif at_username_request?
+      find_account_url_by_name(first_segment)
+    elsif accounts_request? && record_integer_id_request?
+      find_account_url_by_id(second_segment)
    end
  end

  private

+  def at_username_status_request?
+    at_username_request? && record_integer_id_request?
+  end
+
+  def statuses_status_request?
+    statuses_request? && record_integer_id_request?
+  end
+
+  def at_username_request?
+    first_segment.present? && first_segment.start_with?('@')
+  end
+
+  def statuses_request?
+    first_segment == 'statuses'
+  end
+
+  def accounts_request?
+    first_segment == 'accounts'
+  end
+
+  def record_integer_id_request?
+    second_segment =~ /\d/
+  end
+
+  def first_segment
+    path_segments.first
+  end
+
+  def second_segment
+    path_segments.second
+  end
+
  def path_segments
-    @path_segments ||= @path.gsub(/\A\//, '').split('/')
+    @path_segments ||= @path.delete_prefix('/').split('/')
  end

  def find_status_url_by_id(id)
--- a/app/lib/vacuum/imports_vacuum.rb
+++ b/app/lib/vacuum/imports_vacuum.rb
@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class Vacuum::ImportsVacuum
+  def perform
+    clean_unconfirmed_imports!
+    clean_old_imports!
+  end
+
+  private
+
+  def clean_unconfirmed_imports!
+    BulkImport.where(state: :unconfirmed).where('created_at <= ?', 10.minutes.ago).reorder(nil).in_batches.delete_all
+  end
+
+  def clean_old_imports!
+    BulkImport.where('created_at <= ?', 1.week.ago).reorder(nil).in_batches.delete_all
+  end
+end
--- a/app/lib/webfinger_resource.rb
+++ b/app/lib/webfinger_resource.rb
@ -57,7 +57,7 @@ class WebfingerResource
  end

  def resource_without_acct_string
-    resource.gsub(/\Aacct:/, '')
+    resource.delete_prefix('acct:')
  end

  def local_username
--- a/Show more
+++ b/Show more