init

src/modules/cart/dto/apply-coupon.dto.ts

@@ -0,0 +1,9 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { IsNotEmpty, IsString } from 'class-validator';
+
+export class ApplyCouponDto {
+  @ApiProperty({ description: 'Coupon code', example: 'DISCOUNT10' })
+  @IsNotEmpty()
+  @IsString()
+  code!: string;
+}