chore: update transaction default value comment (#5223)

packages/better-auth/src/adapters/drizzle-adapter/drizzle-adapter.ts

@@ -66,7 +66,7 @@ export interface DrizzleAdapterConfig {
 	 *
 	 * If the database doesn't support transactions,
 	 * set this to `false` and operations will be executed sequentially.
-	 * @default true
+	 * @default false
 	 */
 	transaction?: boolean;
 }

packages/better-auth/src/adapters/kysely-adapter/kysely-adapter.ts

@@ -38,7 +38,7 @@ interface KyselyAdapterConfig {
 	 *
 	 * If the database doesn't support transactions,
 	 * set this to `false` and operations will be executed sequentially.
-	 * @default true
+	 * @default false
 	 */
 	transaction?: boolean;
 }

packages/better-auth/src/adapters/mongodb-adapter/mongodb-adapter.ts

@@ -34,7 +34,7 @@ export interface MongoDBAdapterConfig {
 	 *
 	 * If the database doesn't support transactions,
 	 * set this to `false` and operations will be executed sequentially.
-	 * @default true
+	 * @default false
 	 */
 	transaction?: boolean;
 }
@@ -283,7 +283,7 @@ export const mongodbAdapter = (db: Db, config?: MongoDBAdapterConfig) => {
 			},
 			supportsNumericIds: false,
 			transaction:
-				config?.client && (config?.transaction ?? false)
+				config?.client && (config?.transaction ?? true)
 					? async (cb) => {
 							if (!config.client) {
 								return cb(lazyAdapter!(lazyOptions!));

packages/better-auth/src/adapters/prisma-adapter/prisma-adapter.ts

@@ -42,7 +42,7 @@ export interface PrismaConfig {
 	 *
 	 * If the database doesn't support transactions,
 	 * set this to `false` and operations will be executed sequentially.
-	 * @default true
+	 * @default false
 	 */
 	transaction?: boolean;
 }