diff --git a/frontend/app/shared/services/app-languages.service.ts b/frontend/app/shared/services/app-languages.service.ts
index 7ba3fc609..2f469b4bf 100644
--- a/frontend/app/shared/services/app-languages.service.ts
+++ b/frontend/app/shared/services/app-languages.service.ts
@@ -36,13 +36,13 @@ export type AppLanguagesDto =
     Versioned<AppLanguagesPayload>;
 
 export type AppLanguagesPayload =
-    Readonly<{ items: readonly AppLanguageDto[], canCreate: boolean } & Resource>;
+    Readonly<{ items: ReadonlyArray<AppLanguageDto>, canCreate: boolean } & Resource>;
 
 export type AddAppLanguageDto =
     Readonly<{ language: string }>;
 
 export type UpdateAppLanguageDto =
-    Readonly<{ isMaster?: boolean, isOptional?: boolean, falback?: readonly string[] }>;
+    Readonly<{ isMaster?: boolean, isOptional?: boolean, falback?: ReadonlyArray<string> }>;
 
 @Injectable()
 export class AppLanguagesService {
diff --git a/frontend/app/shared/services/apps.service.ts b/frontend/app/shared/services/apps.service.ts
index eb6ebc9c5..b08c7a80a 100644
--- a/frontend/app/shared/services/apps.service.ts
+++ b/frontend/app/shared/services/apps.service.ts
@@ -108,14 +108,8 @@ export class EditorDto {
     }
 }
 
-export type UpdatePatternDto =
-    Readonly<{ name: string, regex: string, message?: string }>;
-
-export type UpdateEditorDto =
-    Readonly<{ name: string, regex: string, message?: string }>;
-
 export type UpdateAppSettingsDto =
-    Readonly<{ patterns: readonly UpdatePatternDto[], editors: readonly UpdateEditorDto[], hideScheduler?: boolean }>;
+    Readonly<{ patterns: ReadonlyArray<PatternDto>, editors: ReadonlyArray<EditorDto>, hideScheduler?: boolean }>;
 
 export type CreateAppDto =
     Readonly<{ name: string; template?: string; }>;
diff --git a/frontend/app/shared/services/clients.service.ts b/frontend/app/shared/services/clients.service.ts
index 2a26aaf96..a60c97183 100644
--- a/frontend/app/shared/services/clients.service.ts
+++ b/frontend/app/shared/services/clients.service.ts
@@ -46,7 +46,7 @@ export type ClientsDto =
     Versioned<ClientsPayload>;
 
 export type ClientsPayload =
-    Readonly<{ items: readonly ClientDto[], canCreate: boolean } & Resource>;
+    Readonly<{ items: ReadonlyArray<ClientDto>, canCreate: boolean } & Resource>;
 
 export type CreateClientDto =
     Readonly<{ id: string }>;
diff --git a/frontend/app/shared/services/contents.service.ts b/frontend/app/shared/services/contents.service.ts
index ec0131142..2faedc5cc 100644
--- a/frontend/app/shared/services/contents.service.ts
+++ b/frontend/app/shared/services/contents.service.ts
@@ -123,7 +123,7 @@ export type ContentData =
     Readonly<{ [fieldName: string ]: ContentFieldData }>;
 
 export type BulkUpdateDto =
-    Readonly<{ jobs: readonly BulkUpdateJobDto[], doNotScript?: boolean, checkReferrers?: boolean }>;
+    Readonly<{ jobs: ReadonlyArray<BulkUpdateJobDto>, doNotScript?: boolean, checkReferrers?: boolean }>;
 
 export type BulkUpdateJobDto =
     Readonly<{ id: string; type: BulkUpdateType; status?: string; schema?: string; dueTime?: string | null; expectedVersion?: number }>;
diff --git a/frontend/app/shared/services/roles.service.ts b/frontend/app/shared/services/roles.service.ts
index 0c5619bef..a51ec94e1 100644
--- a/frontend/app/shared/services/roles.service.ts
+++ b/frontend/app/shared/services/roles.service.ts
@@ -39,7 +39,7 @@ export type RolesDto =
     Versioned<RolesPayload>;
 
 export type RolesPayload =
-    Readonly<{ items: readonly RoleDto[]; canCreate: boolean; } & Resource>;
+    Readonly<{ items: ReadonlyArray<RoleDto>; canCreate: boolean; } & Resource>;
 
 export type CreateRoleDto =
     Readonly<{ name: string; }>;
diff --git a/frontend/app/shared/services/schemas.service.ts b/frontend/app/shared/services/schemas.service.ts
index 7d6b0f0d3..653101b59 100644
--- a/frontend/app/shared/services/schemas.service.ts
+++ b/frontend/app/shared/services/schemas.service.ts
@@ -328,10 +328,10 @@ export type FieldRule = { field: string, action: FieldRuleAction, condition: str
 export type SchemaCompletions = ReadonlyArray<{ name: string, description: string }>;
 
 export type SchemasDto =
-    Readonly<{ items: readonly SchemaDto[]; canCreate: boolean } & Resource>;
+    Readonly<{ items: ReadonlyArray<SchemaDto>; canCreate: boolean } & Resource>;
 
 export type AddFieldDto =
-    Readonly<{ name: string;  partitioning?: string; properties: FieldPropertiesDto }>;
+    Readonly<{ name: string; partitioning?: string; properties: FieldPropertiesDto }>;
 
 export type UpdateUIFields =
     Readonly<{ fieldsInLists?: Tags; fieldsInReferences?: Tags; }>;