nestjs gide updated to esm (#7360)

Author: aidankmcalister

content/800-guides/430-nestjs.mdx

@@ -42,6 +42,15 @@ cd nestjs-prisma
 
 You can run `npm start` to start your application at `http://localhost:3000/`. Over the course of this guide, you'll add routes to store and retrieve data about _users_ and _posts_.
 
+In `package.json`, add the `type` field set to `"module"`:
+
+```json file=package.json
+{
+  // add-next-line
+  "type": "module"
+}
+```
+
 ## 2. Set up Prisma
 
 ### 2.1. Install Prisma and dependencies
@@ -73,16 +82,14 @@ This creates a new `prisma` directory with the following contents:
 - `prisma.config.ts`: A configuration file for your projects
 - `.env`: A [dotenv](https://github.com/motdotla/dotenv) file, typically used to store your database credentials in a group of environment variables
 
-### 2.3. Set the generator output path and update the module format
+### 2.3. Set the generator output path
 
-Specify your output `path` for the generated Prisma client by either passing `--output ../src/generated/prisma` during `prisma init` or directly in your Prisma schema. Also, update the `moduleFormat` to `cjs`:
+Specify your output `path` for the generated Prisma client by either passing `--output ../src/generated/prisma` during `prisma init` or directly in your Prisma schema:
 
 ```prisma file=prisma/schema.prisma
 generator client {
   provider = "prisma-client"
   output   = "../src/generated/prisma"
-  // add-next-line
-  moduleFormat = "cjs"
 }
 ```
 
@@ -169,7 +176,7 @@ Inside the `src` directory, create a new file called `prisma.service.ts` and add
 
 ```typescript file=src/prisma.service.ts
 import { Injectable } from '@nestjs/common';
-import { PrismaClient } from './generated/prisma/client';
+import { PrismaClient } from './generated/prisma/client.js';
 import { PrismaPg } from '@prisma/adapter-pg';
 
 @Injectable()
@@ -193,8 +200,8 @@ Still inside the `src` directory, create a new file called `user.service.ts` and
 
 ```typescript file=src/user.service.ts
 import { Injectable } from '@nestjs/common';
-import { PrismaService } from './prisma.service';
-import { User, Prisma } from './generated/prisma/client';
+import { PrismaService } from './prisma.service.js';
+import { User, Prisma } from './generated/prisma/client.js';
 
 @Injectable()
 export class UserService {
@@ -261,8 +268,8 @@ Still inside the `src` directory, create a new file called `post.service.ts` and
 ```typescript file=src/post.service.ts
 
 import { Injectable } from '@nestjs/common';
-import { PrismaService } from './prisma.service';
-import { Post, Prisma } from './generated/prisma/client';
+import { PrismaService } from './prisma.service.js';
+import { Post, Prisma } from './generated/prisma/client.js';
 
 @Injectable()
 export class PostService {
@@ -338,10 +345,10 @@ import {
   Put,
   Delete,
 } from '@nestjs/common';
-import { UserService } from './user.service';
-import { PostService } from './post.service';
-import { User as UserModel } from './generated/prisma/client';
-import { Post as PostModel } from './generated/prisma/client';
+import { UserService } from './user.service.js';
+import { PostService } from './post.service.js';
+import { User as UserModel } from './generated/prisma/client.js';
+import { Post as PostModel } from './generated/prisma/client.js';
 
 @Controller()
 export class AppController {
@@ -454,11 +461,11 @@ Update `src/app.module.ts` to register all services:
 import { Module } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { ConfigModule } from '@nestjs/config';
-import { AppService } from './app.service';
+import { AppService } from './app.service.js';
 //add-start
-import { PrismaService } from './prisma.service';
-import { UserService } from './user.service';
-import { PostService } from './post.service';
+import { PrismaService } from './prisma.service.js';
+import { UserService } from './user.service.js';
+import { PostService } from './post.service.js';
 //add-end
 
 @Module({