diff --git a/tests/fixtures/js-stubs/types.tsx b/tests/fixtures/js-stubs/types.tsx
new file mode 100644
index 00000000000000..df1b802b56d5b4
--- /dev/null
+++ b/tests/fixtures/js-stubs/types.tsx
@@ -0,0 +1,143 @@
+type SimpleStub<T = any> = () => T;
+
+type OverridableStub<T = any> = (params?: Partial<T>) => T;
+
+type OverridableStubList<T = any> = (params?: T[]) => T[];
+
+type TestStubFixtures = {
+  AccessRequest: OverridableStub;
+  AccountAppearance: OverridableStub;
+  AccountEmails: OverridableStubList;
+  ActivityFeed: OverridableStub;
+  ApiApplication: OverridableStub;
+  ApiKey: OverridableStub;
+  ApiToken: OverridableStub;
+  AsanaCreate: SimpleStub;
+  AsanaPlugin: SimpleStub;
+  AuditLogs: OverridableStubList;
+  AuthProvider: OverridableStub;
+  AuthProviders: OverridableStubList;
+  Authenticators: SimpleStub;
+  AllAuthenticators: SimpleStub;
+  BitbucketIntegrationConfig: SimpleStub;
+  Broadcast: OverridableStub;
+  Commit: OverridableStub;
+  CommitAuthor: OverridableStub;
+  DataScrubbingRelayPiiConfig: SimpleStub;
+  DebugFile: OverridableStub;
+  DebugSymbols: OverridableStub;
+  DetailedEvents: SimpleStub;
+  DiscoverSavedQuery: OverridableStub;
+  Entries: SimpleStub;
+  Event: OverridableStub;
+  EventEntry: OverridableStub;
+  EventEntryDebugMeta: OverridableStub;
+  EventEntryStacktrace: OverridableStub;
+  EventIdQueryResult: OverridableStub;
+  EventStacktraceException: OverridableStub;
+  EventStacktraceMessage: OverridableStub;
+  Events: OverridableStubList;
+  EventsStats: OverridableStub;
+  ExceptionWithMeta: OverridableStubList;
+  GitHubIntegration: OverridableStub;
+  GitHubIntegrationProvider: OverridableStub;
+  GitHubRepositoryProvider: OverridableStub;
+  GithubIntegrationConfig: SimpleStub;
+  GlobalSelection: OverridableStub;
+  Group: OverridableStub;
+  GroupStats: OverridableStub;
+  GroupingConfigs: SimpleStub;
+  GroupingEnhancements: SimpleStub;
+  Groups: SimpleStub;
+  Incident: OverridableStub;
+  IncidentActivity: OverridableStub;
+  IncidentRule: OverridableStub;
+  IncidentStats: OverridableStub;
+  IncidentTrigger: OverridableStub;
+  InstallWizard: OverridableStub;
+  JiraIntegration: OverridableStub;
+  JiraIntegrationProvider: OverridableStub;
+  Member: OverridableStub;
+  Members: OverridableStubList;
+  OrgOwnedApps: SimpleStub;
+  Organization: OverridableStub;
+  OrganizationEvent: OverridableStub;
+  OrganizationIntegrations: OverridableStub;
+  Organizations: OverridableStub;
+  PhabricatorCreate: SimpleStub;
+  PhabricatorPlugin: SimpleStub;
+  PlatformExternalIssue: OverridableStub;
+  Plugin: OverridableStub;
+  PluginListConfig: SimpleStub;
+  Plugins: OverridableStubList;
+  Project: OverridableStub;
+  ProjectAlertRule: OverridableStub;
+  ProjectAlertRuleConfiguration: OverridableStub;
+  ProjectDetails: OverridableStub;
+  ProjectFilters: OverridableStubList;
+  ProjectKeys: OverridableStubList;
+  ProviderList: SimpleStub;
+  PublishedApps: SimpleStub;
+  PullRequest: OverridableStub;
+  Repository: OverridableStub;
+  Search: OverridableStub;
+  Searches: OverridableStubList;
+  SentryApp: OverridableStub;
+  SentryAppComponent: OverridableStub;
+  SentryAppComponentAsync: OverridableStub;
+  SentryAppComponentDependent: OverridableStub;
+  SentryAppInstallation: OverridableStub;
+  SentryAppInstalls: SimpleStub;
+  SentryAppToken: OverridableStub;
+  SentryAppWebhookRequest: OverridableStub;
+  ServiceIncident: OverridableStub;
+  SessionStatusCountByProjectInPeriod: SimpleStub;
+  SessionStatusCountByReleaseInPeriod: SimpleStub;
+  SessionTotalCountByProjectIn24h: SimpleStub;
+  SessionUserCountByStatus: SimpleStub;
+  SessionUserCountByStatus2: SimpleStub;
+  SessionUserStatusCountByProjectInPeriod: SimpleStub;
+  SessionUserStatusCountByReleaseInPeriod: SimpleStub;
+  SesssionTotalCountByReleaseIn24h: SimpleStub;
+  ShortIdQueryResult: OverridableStub;
+  SourceMapArchive: OverridableStub;
+  SourceMapArtifact: OverridableStub;
+  Subscriptions: OverridableStubList;
+  TagValues: OverridableStubList;
+  Tags: OverridableStubList;
+  Team: OverridableStub;
+  TeamAlertsTriggered: SimpleStub;
+  TeamIssuesReviewed: SimpleStub;
+  TeamResolutionTime: SimpleStub;
+  Tombstones: OverridableStubList;
+  UpdateSdkAndEnableIntegrationSuggestion: SimpleStub;
+  User: OverridableStub;
+  UserDetails: OverridableStub;
+  UserFeedback: OverridableStub;
+  UserIdentity: SimpleStub;
+  UserTotalCountByProjectIn24h: SimpleStub;
+  UserTotalCountByReleaseIn24h: SimpleStub;
+  VercelProvider: SimpleStub;
+  VstsCreate: SimpleStub;
+  VstsIntegrationProvider: OverridableStub;
+  VstsPlugin: SimpleStub;
+
+  Release: (params?: any, healthParams?: any) => any;
+
+  // TODO: These need propertly typed still
+
+  // Widget(queries = {...DEFAULT_QUERIES}, options)
+  // Environments(hidden)
+  // Dashboard(widgets = DEFAULT_WIDGETS, props = {})
+  // AsanaAutocomplete(type = 'project', values = [DEFAULT_AUTOCOMPLETE])
+  // PhabricatorAutocomplete(type = 'project', values = null)
+  // RepositoryProjectPathConfig(project, repo, integration, params)
+  // RoleList(params = [], fullAccess = false)
+
+  // const MOCK_RESP_VERBOSE
+  // const MOCK_RESP_ONLY_IGNORED_CONDITIONS_INVALID
+  // const MOCK_RESP_INCONSISTENT_PLACEHOLDERS
+  // const MOCK_RESP_INCONSISTENT_INTERVALS
+};
+
+export default TestStubFixtures;