clear method always resolves to undefined

packages/keyv-sql/src/index.js

@@ -51,7 +51,8 @@ class KeyvSqlite extends EventEmitter {
 
 	clear() {
 		return this.connected
-			.then(() => this.Entry.destroy({ where: {} }));
+			.then(() => this.Entry.destroy({ where: {} }))
+			.then(() => undefined);
 	}
 }