3 files changed, 9 insertions, 8 deletions
diff --git a/types/ext/cache-map.d.ts b/types/ext/cache-map.d.ts
index a4b8bb1a..0af7109a 100644
--- a/types/ext/cache-map.d.ts
+++ b/types/ext/cache-map.d.ts
@@ -15,9 +15,9 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-export interface Node<K, V> {
+export type Node<K, V> = {
     key: K | null;
     value: V | null;
     previous: Node<K, V> | null;
     next: Node<K, V> | null;
-}
+};
diff --git a/types/ext/dictionary-database.d.ts b/types/ext/dictionary-database.d.ts
index 06a246e8..6569f76b 100644
--- a/types/ext/dictionary-database.d.ts
+++ b/types/ext/dictionary-database.d.ts
@@ -23,17 +23,18 @@ export type DatabaseId = {
     id: number; // Automatic database primary key
 };
 
-export interface MediaDataBase<TContentType = unknown> {
+export type MediaDataBase<TContentType = unknown> = {
     dictionary: string;
     path: string;
     mediaType: string;
     width: number;
     height: number;
     content: TContentType;
-}
+};
+
+export type MediaDataArrayBufferContent = MediaDataBase<ArrayBuffer>;
 
-export interface MediaDataArrayBufferContent extends MediaDataBase<ArrayBuffer> {}
-export interface MediaDataStringContent extends MediaDataBase<string> {}
+export type MediaDataStringContent = MediaDataBase<string>;
 
 export type Media<T extends (ArrayBuffer | string) = ArrayBuffer> = {index: number} & MediaDataBase<T>;
 
diff --git a/types/ext/task-accumulator.d.ts b/types/ext/task-accumulator.d.ts
index 772949f6..f02d449b 100644
--- a/types/ext/task-accumulator.d.ts
+++ b/types/ext/task-accumulator.d.ts
@@ -15,7 +15,7 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-export interface Task<V> {
+export type Task<V> = {
     data: V;
     stale: boolean;
-}
+};