fix: transaction rollback result

Author: chrispader

package/src/operations/transaction.ts

@@ -84,7 +84,8 @@ export const transaction = async <Result = void>(
       }
 
       try {
-        return rollback()
+        rollback()
+        return undefined as Result
       } catch (rollbackError) {
         throw NitroSQLiteError.fromError(rollbackError)
       }

package/src/types.ts

@@ -8,7 +8,9 @@ export interface NitroSQLiteConnection {
   delete(): void
   attach(dbNameToAttach: string, alias: string, location?: string): void
   detach(alias: string): void
-  transaction(fn: (tx: Transaction) => Promise<void> | void): Promise<void>
+  transaction<Result = void>(
+    fn: (tx: Transaction) => Promise<Result>,
+  ): Promise<Result>
   execute: ExecuteQuery
   executeAsync: ExecuteAsyncQuery
   executeBatch(commands: BatchQueryCommand[]): BatchQueryResult