fix(create-adapter): disable transaction by default (#4750)

packages/better-auth/src/adapters/adapter-factory/index.ts

@@ -9,6 +9,7 @@ import type {
 } from "../../types";
 import { generateId as defaultGenerateId, logger } from "../../utils";
 import type {
+	AdapterFactoryConfig,
 	AdapterFactoryOptions,
 	AdapterTestDebugLogs,
 	CleanedWhere,
@@ -69,7 +70,8 @@ export const createAdapterFactory =
 			supportsJSON: cfg.supportsJSON ?? false,
 			adapterName: cfg.adapterName ?? cfg.adapterId,
 			supportsNumericIds: cfg.supportsNumericIds ?? true,
-		};
+			transaction: cfg.transaction ?? false,
+		} satisfies AdapterFactoryConfig;
 
 		if (
 			options.advanced?.database?.useNumberId === true &&

packages/better-auth/src/adapters/adapter-factory/types.ts

@@ -99,7 +99,8 @@ export interface AdapterFactoryConfig {
 	 * Execute multiple operations in a transaction.
 	 *
 	 * If the database doesn't support transactions, set this to `false` and operations will be executed sequentially.
-	 *
+	 * 
+	 * @default false
 	 */
 	transaction?:
 		| false

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

@@ -361,7 +361,7 @@ export const drizzleAdapter = (db: DB, config: DrizzleAdapterConfig) => {
 			usePlural: config.usePlural ?? false,
 			debugLogs: config.debugLogs ?? false,
 			transaction:
-				(config.transaction ?? true)
+				(config.transaction ?? false)
 					? (cb) =>
 							db.transaction((tx: DB) => {
 								const adapter = createAdapterFactory({

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

@@ -372,7 +372,7 @@ export const kyselyAdapter = (
 					: true,
 			supportsJSON: false,
 			transaction:
-				(config?.transaction ?? true)
+				(config?.transaction ?? false)
 					? (cb) =>
 							db.transaction().execute((trx) => {
 								const adapter = createAdapterFactory({

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

@@ -282,7 +282,7 @@ export const mongodbAdapter = (db: Db, config?: MongoDBAdapterConfig) => {
 			},
 			supportsNumericIds: false,
 			transaction:
-				config?.client && (config?.transaction ?? true)
+				config?.client && (config?.transaction ?? false)
 					? async (cb) => {
 							if (!config.client) {
 								return cb(lazyAdapter!(lazyOptions!));

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

@@ -241,7 +241,7 @@ export const prismaAdapter = (prisma: PrismaClient, config: PrismaConfig) => {
 			usePlural: config.usePlural ?? false,
 			debugLogs: config.debugLogs ?? false,
 			transaction:
-				(config.transaction ?? true)
+				(config.transaction ?? false)
 					? (cb) =>
 							(prisma as PrismaClientInternal).$transaction((tx) => {
 								const adapter = createAdapterFactory({