✨ add class-validator & class-transformer

package.json

@@ -31,6 +31,8 @@
     "@nestjs/mapped-types": "^1.2.2",
     "@nestjs/platform-express": "^9.0.0",
     "@prisma/client": "^4.10.1",
+    "class-transformer": "^0.5.1",
+    "class-validator": "^0.14.0",
     "nestjs-prisma": "^0.20.0",
     "reflect-metadata": "^0.1.13",
     "rxjs": "^7.2.0"

pnpm-lock.yaml

@@ -13,6 +13,8 @@ specifiers:
   '@types/node': 18.11.18
   '@typescript-eslint/eslint-plugin': ^5.0.0
   '@typescript-eslint/parser': ^5.0.0
+  class-transformer: ^0.5.1
+  class-validator: ^0.14.0
   eslint: ^8.0.1
   eslint-config-prettier: ^8.3.0
   eslint-plugin-prettier: ^4.0.0
@@ -31,12 +33,14 @@ specifiers:
   webpack: ^5.75.0
 
 dependencies:
-  '@nestjs/common': 9.3.9_mnr6j2del53muneqly5h4y27ai
+  '@nestjs/common': 9.3.9_welcnyot5bzd5wa2aovbkxpi4i
   '@nestjs/config': 2.3.1_jrq2rdgfp2sx67wmylmrqliwxe
   '@nestjs/core': 9.3.9_q6agyr4hwia55oswpsa7zjxcpm
-  '@nestjs/mapped-types': 1.2.2_ilxajbd2e536h4oohar7aljlry
+  '@nestjs/mapped-types': 1.2.2_sm5si6oczf3vcbfl6qa276t67m
   '@nestjs/platform-express': 9.3.9_77foi4w27ghy47yutmnzv7krjy
   '@prisma/client': 4.10.1_prisma@4.10.1
+  class-transformer: 0.5.1
+  class-validator: 0.14.0
   nestjs-prisma: 0.20.0_uhhmeuf5jto6tk72f36tv2cdfe
   reflect-metadata: 0.1.13
   rxjs: 7.8.0
@@ -354,7 +358,7 @@ packages:
       - webpack-cli
     dev: true
 
-  /@nestjs/common/9.3.9_mnr6j2del53muneqly5h4y27ai:
+  /@nestjs/common/9.3.9_welcnyot5bzd5wa2aovbkxpi4i:
     resolution: {integrity: sha512-GshTD9Xz+wD2em6NyzU4NXw5IXMUmapgDgD+iuj6XL0258hvDwODmNk37mBBnZvTZlqER+krvIUKnS34etqF/A==}
     peerDependencies:
       cache-manager: <=5
@@ -370,6 +374,8 @@ packages:
       class-validator:
         optional: true
     dependencies:
+      class-transformer: 0.5.1
+      class-validator: 0.14.0
       iterare: 1.2.1
       reflect-metadata: 0.1.13
       rxjs: 7.8.0
@@ -384,7 +390,7 @@ packages:
       reflect-metadata: ^0.1.13
       rxjs: ^6.0.0 || ^7.2.0
     dependencies:
-      '@nestjs/common': 9.3.9_mnr6j2del53muneqly5h4y27ai
+      '@nestjs/common': 9.3.9_welcnyot5bzd5wa2aovbkxpi4i
       dotenv: 16.0.3
       dotenv-expand: 10.0.0
       lodash: 4.17.21
@@ -411,7 +417,7 @@ packages:
       '@nestjs/websockets':
         optional: true
     dependencies:
-      '@nestjs/common': 9.3.9_mnr6j2del53muneqly5h4y27ai
+      '@nestjs/common': 9.3.9_welcnyot5bzd5wa2aovbkxpi4i
       '@nestjs/platform-express': 9.3.9_77foi4w27ghy47yutmnzv7krjy
       '@nuxtjs/opencollective': 0.3.2
       fast-safe-stringify: 2.1.1
@@ -425,7 +431,7 @@ packages:
       - encoding
     dev: false
 
-  /@nestjs/mapped-types/1.2.2_ilxajbd2e536h4oohar7aljlry:
+  /@nestjs/mapped-types/1.2.2_sm5si6oczf3vcbfl6qa276t67m:
     resolution: {integrity: sha512-3dHxLXs3M0GPiriAcCFFJQHoDFUuzTD5w6JDhE7TyfT89YKpe6tcCCIqOZWdXmt9AZjjK30RkHRSFF+QEnWFQg==}
     peerDependencies:
       '@nestjs/common': ^7.0.8 || ^8.0.0 || ^9.0.0
@@ -438,7 +444,9 @@ packages:
       class-validator:
         optional: true
     dependencies:
-      '@nestjs/common': 9.3.9_mnr6j2del53muneqly5h4y27ai
+      '@nestjs/common': 9.3.9_welcnyot5bzd5wa2aovbkxpi4i
+      class-transformer: 0.5.1
+      class-validator: 0.14.0
       reflect-metadata: 0.1.13
     dev: false
 
@@ -448,7 +456,7 @@ packages:
       '@nestjs/common': ^9.0.0
       '@nestjs/core': ^9.0.0
     dependencies:
-      '@nestjs/common': 9.3.9_mnr6j2del53muneqly5h4y27ai
+      '@nestjs/common': 9.3.9_welcnyot5bzd5wa2aovbkxpi4i
       '@nestjs/core': 9.3.9_q6agyr4hwia55oswpsa7zjxcpm
       body-parser: 1.20.1
       cors: 2.8.5
@@ -654,6 +662,10 @@ packages:
       '@types/node': 18.11.18
     dev: true
 
+  /@types/validator/13.7.12:
+    resolution: {integrity: sha512-YVtyAPqpefU+Mm/qqnOANW6IkqKpCSrarcyV269C8MA8Ux0dbkEuQwM/4CjL47kVEM2LgBef/ETfkH+c6+moFA==}
+    dev: false
+
   /@typescript-eslint/eslint-plugin/5.52.0_6cfvjsbua5ptj65675bqcn6oza:
     resolution: {integrity: sha512-lHazYdvYVsBokwCdKOppvYJKaJ4S41CgKBcPvyd0xjZNbvQdhn/pnJlGtQksQ/NhInzdaeaSarlBjDXHuclEbg==}
     engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
@@ -1214,6 +1226,18 @@ packages:
     engines: {node: '>=6.0'}
     dev: true
 
+  /class-transformer/0.5.1:
+    resolution: {integrity: sha512-SQa1Ws6hUbfC98vKGxZH3KFY0Y1lm5Zm0SY8XX9zbK7FJCyVEac3ATW0RIpwzW+oOfmHE5PMPufDG9hCfoEOMw==}
+    dev: false
+
+  /class-validator/0.14.0:
+    resolution: {integrity: sha512-ct3ltplN8I9fOwUd8GrP8UQixwff129BkEtuWDKL5W45cQuLd19xqmTLu5ge78YDm/fdje6FMt0hGOhl0lii3A==}
+    dependencies:
+      '@types/validator': 13.7.12
+      libphonenumber-js: 1.10.19
+      validator: 13.9.0
+    dev: false
+
   /clean-stack/2.2.0:
     resolution: {integrity: sha512-4diC9HaTE+KRAMWhDhrGOECgWZxoevMc5TlkObMqNSsVU62PYzXZ/SMTjzyGAFF1YusgxGcSWTEXBhp0CPwQ1A==}
     engines: {node: '>=6'}
@@ -2284,6 +2308,10 @@ packages:
       type-check: 0.4.0
     dev: true
 
+  /libphonenumber-js/1.10.19:
+    resolution: {integrity: sha512-MDZ1zLIkfSDZV5xBta3nuvbEOlsnKCPe4z5r3hyup/AXveevkl9A1eSWmLhd2FX4k7pJDe4MrLeQsux0HI/VWg==}
+    dev: false
+
   /lilconfig/2.0.6:
     resolution: {integrity: sha512-9JROoBW7pobfsx+Sq2JsASvCo6Pfo6WWoUW79HuB1BCoBXD4PLWJPqDF6fNj67pqBYTbAHkE57M1kS/+L1neOg==}
     engines: {node: '>=10'}
@@ -2541,7 +2569,7 @@ packages:
     dependencies:
       '@angular-devkit/core': 13.3.10
       '@angular-devkit/schematics': 13.3.10
-      '@nestjs/common': 9.3.9_mnr6j2del53muneqly5h4y27ai
+      '@nestjs/common': 9.3.9_welcnyot5bzd5wa2aovbkxpi4i
       '@prisma/client': 4.10.1_prisma@4.10.1
       '@schematics/angular': 13.3.10
       prisma: 4.10.1
@@ -3477,6 +3505,11 @@ packages:
     resolution: {integrity: sha512-wa7YjyUGfNZngI/vtK0UHAN+lgDCxBPCylVXGp0zu59Fz5aiGtNXaq3DhIov063MorB+VfufLh3JlF2KdTK3xg==}
     dev: true
 
+  /validator/13.9.0:
+    resolution: {integrity: sha512-B+dGG8U3fdtM0/aNK4/X8CXq/EcxU2WPrPEkJGslb47qyHsxmbggTWK0yEA4qnYVNF+nxNlN88o14hIcPmSIEA==}
+    engines: {node: '>= 0.10'}
+    dev: false
+
   /vary/1.1.2:
     resolution: {integrity: sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg==}
     engines: {node: '>= 0.8'}

src/main.ts

@@ -1,4 +1,5 @@
 import { HttpAdapterHost, NestFactory } from '@nestjs/core'
+import { ValidationPipe } from '@nestjs/common'
 import { ConfigService } from '@nestjs/config'
 import { PrismaClientExceptionFilter, PrismaService } from 'nestjs-prisma'
 import { AppModule } from './app.module'
@@ -6,6 +7,9 @@ import { AppModule } from './app.module'
 async function bootstrap() {
   const app = await NestFactory.create(AppModule)
 
+  // Validation
+  app.useGlobalPipes(new ValidationPipe({ whitelist: true }))
+
   // enable shutdown hook
   const prismaService = app.get(PrismaService)
   await prismaService.enableShutdownHooks(app)

src/users/dto/create-user.dto.ts

@@ -0,0 +1,24 @@
+import {
+  IsNotEmpty,
+  IsOptional,
+  IsString,
+  Length,
+  IsEmail,
+  IsStrongPassword,
+} from 'class-validator'
+
+export class CreateUserDto {
+  @IsNotEmpty()
+  @IsEmail()
+  email: string
+
+  @IsOptional()
+  @IsString()
+  @Length(5, 20)
+  username?: string
+
+  @IsString()
+  @IsNotEmpty()
+  @IsStrongPassword()
+  password: string
+}

src/users/users.controller.ts

@@ -1,5 +1,6 @@
 import { Controller, Get, Post, Body, Param } from '@nestjs/common'
 import { UsersService } from './users.service'
+import { CreateUserDto } from './dto/create-user.dto'
 
 @Controller()
 export class UsersController {
@@ -16,9 +17,7 @@ export class UsersController {
   }
 
   @Post('users')
-  async createUser(
+  async createUser(@Body() userData: CreateUserDto) {
-    @Body() userData: { email: string; password: string; username?: string },
-  ) {
     return this.userService.createUser(userData)
   }
 }