feat: add example with bun (#8287)

* feat: add example with bun.js

* feat: add new example

* fix: clean nits

* fix: resolve coderabbit nits

Author: ankur-arch

generator-prisma-client/bun-with-prisma-driver-adapters/.env.example

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+DATABASE_URL=""
+DIRECT_URL=""

generator-prisma-client/bun-with-prisma-driver-adapters/.gitignore

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+# Based on https://raw.githubusercontent.com/github/gitignore/main/Node.gitignore
+
+# Logs
+
+logs
+_.log
+npm-debug.log_
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+index
+prisma/migrations
+# Caches
+
+.cache
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+
+report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
+
+# Runtime data
+
+pids
+_.pid
+_.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+
+lib-cov
+
+# Coverage directory used by tools like istanbul
+
+coverage
+*.lcov
+
+# nyc test coverage
+
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+
+bower_components
+
+# node-waf configuration
+
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+
+build/Release
+
+# Dependency directories
+
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+
+web_modules/
+
+# TypeScript cache
+
+*.tsbuildinfo
+
+# Optional npm cache directory
+
+.npm
+
+# Optional eslint cache
+
+.eslintcache
+
+# Optional stylelint cache
+
+.stylelintcache
+
+# Microbundle cache
+
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+
+.node_repl_history
+
+# Output of 'npm pack'
+
+*.tgz
+
+# Yarn Integrity file
+
+.yarn-integrity
+
+# dotenv environment variable files
+
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+
+.parcel-cache
+
+# Next.js build output
+
+.next
+out
+
+# Nuxt.js build / generate output
+
+.nuxt
+dist
+
+# Gatsby files
+
+# Comment in the public line in if your project uses Gatsby and not Next.js
+
+# https://nextjs.org/blog/next-9-1#public-directory-support
+
+# public
+
+# vuepress build output
+
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+
+.temp
+
+# Docusaurus cache and generated files
+
+.docusaurus
+
+# Serverless directories
+
+.serverless/
+
+# FuseBox cache
+
+.fusebox/
+
+# DynamoDB Local files
+
+.dynamodb/
+
+# TernJS port file
+
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+
+.vscode-test
+
+# yarn v2
+
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
+
+# IntelliJ based IDEs
+.idea
+
+# Finder (MacOS) folder config
+.DS_Store
+
+/generated/prisma
+bun.lockb

generator-prisma-client/bun-with-prisma-driver-adapters/README.md

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+# Bun + Prisma ORM + Driver Adapters example
+
+## Introduction
+
+A simple web server using [Bun](https://bun.sh/) and [Prisma ORM](https://www.prisma.io/) with [Prisma Postgres](https://www.prisma.io/postgres). This example helps you build a Bun binary that starts a simple HTTP web server that returns all the users from the database.
+
+This example uses:
+
+- Bun's built-in HTTP server
+- New [`prisma-client` generator](https://www.prisma.io/docs/orm/prisma-schema/overview/generators#prisma-client-preview) and the `bun` runtime
+- [Driver Adapters (`node-postgres` driver)](https://www.prisma.io/docs/orm/overview/databases/postgresql#using-the-node-postgres-driver)
+
+## Prerequisites
+
+- **Bun**: Make sure you have Bun installed on your system. If not, install it from [bun.sh](https://bun.sh/)
+- **Database**: Use a Prisma Postgres database or any other supported database by Prisma. This example uses [Prisma Postgres](https://www.prisma.io/postgres).
+
+## Getting started
+
+### 1. Set up environment variables
+
+Copy the [`.env.example`](./.env.example) file to `.env`:
+
+```bash
+cp .env.example .env
+```
+
+Run the following command to receive a temporary Prisma Postgres database connection string:
+
+```bash
+npx create-db
+```
+
+You should have a similar output to the following:
+
+```bash
+┌  🚀 Creating a Prisma Postgres database
+│
+│  Provisioning a temporary database in us-east-1...
+│
+│  It will be automatically deleted in 24 hours, but you can claim it.
+│
+◇  Database created successfully!
+│
+│
+●  Connect to your database →
+│
+│    Use this connection string optimized for Prisma ORM:
+│
+│    $DATABASE_URL
+│
+│
+│    Use this connection string for everything else:
+│
+│    $DIRECT_URL
+│
+│
+◆  Claim your database →
+│
+│    Want to keep your database? Claim for free via this link:
+│
+│    https://create-db.prisma.io?projectID=proj_cmf0tcods01d6z1ff9eyvqgd0&utm_source=create-db&utm_medium=cli
+│
+│     Your temporary database will be deleted in 24 hours if not claimed.
+│
+└
+```
+
+Get the database URL and paste it in your `.env` file:
+
+```bash
+DATABASE_URL="your_prisma_postgres_connection_string_here"
+DIRECT_URL="your_direct_connection_string_here"
+```
+
+- The `DATABASE_URL` is the connection string optimized for Prisma ORM and helps you perform migrations.
+- The `DIRECT_URL` is the connection string for everything else and in this case helps you [perform database queries](./db.ts) using driver adapters.
+
+> Learn more about `npx create-db` [in our docs](https://www.prisma.io/docs/postgres/introduction/npx-create-db).
+
+### 2. Install dependencies
+
+```bash
+bun install
+```
+
+### 3. Run migrations and seed the database
+
+Create a new migration:
+
+```bash
+bun prisma migrate dev
+```
+
+Generate the Prisma client:
+
+```bash
+bun prisma generate
+```
+
+Seed the database:
+
+```bash
+bun prisma db seed
+```
+
+### 4. Start the server
+
+```bash
+bun run index.ts
+```
+
+Server runs on `http://localhost:3000` and whenever it is visited it returns all the users in the database.
+
+### 5. Build and run a Bun executable
+
+Build the executable:
+
+```bash
+bun build --compile index.ts
+```
+
+Run the executable:
+
+```bash
+./index
+```
+
+You should see `Listening on http://localhost:3000` in the console, and when you visit `http://localhost:3000` in your browser, you should see the list of users in the database.
+
+## Project structure
+
+```text
+├── prisma/
+│   └── schema.prisma         # Database schema and Prisma configuration
+│   └── seed.ts               # Database seed file
+├── generated/                # Generated Prisma Client (custom output location)
+├── db.ts                     # Database connection with Prisma driver adapters
+├── index.ts                  # Main server file
+├── package.json              # Dependencies and scripts
+├── prisma.config.ts           # Prisma configuration
+└── .env.example              # Environment variables template
+```

generator-prisma-client/bun-with-prisma-driver-adapters/db.ts

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+import 'dotenv/config'
+import { PrismaClient } from './generated/prisma/client'
+import { PrismaPg } from '@prisma/adapter-pg'
+
+const connectionString = `${process.env.DIRECT_URL}`
+
+const adapter = new PrismaPg({ connectionString })
+
+export const prisma = new PrismaClient({ adapter })

generator-prisma-client/bun-with-prisma-driver-adapters/index.ts

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+import { prisma } from './db'
+
+const server = Bun.serve({
+  port: 3000,
+  async fetch(req) {
+    const { pathname } = new URL(req.url)
+
+    // Ignore favicon requests
+    if (pathname === '/favicon.ico') {
+      return new Response(null, { status: 204 }) // or serve an icon if you have one
+    }
+
+    // Return all users
+    const users = await prisma.user.findMany()
+
+    // Count all users
+    const count = await prisma.user.count()
+
+    // Format the response with JSON
+    return new Response(
+      JSON.stringify({
+        users: users,
+        totalUsers: count,
+      }),
+      { headers: { 'Content-Type': 'application/json' } },
+    )
+  },
+})
+
+console.log(`Listening on http://localhost:${server.port}`)

generator-prisma-client/bun-with-prisma-driver-adapters/package.json

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+{
+  "name": "bun",
+  "module": "index.ts",
+  "type": "module",
+  "devDependencies": {
+    "bun-types": "^1.2.21",
+    "prisma": "^6.15.0"
+  },
+  "peerDependencies": {
+    "typescript": "^5.0.0"
+  },
+  "dependencies": {
+    "@prisma/adapter-pg": "^6.15.0",
+    "@prisma/client": "^6.15.0",
+    "add": "^2.0.6",
+    "bun": "^1.2.21",
+    "dotenv": "^17.2.1"
+  }
+}

generator-prisma-client/bun-with-prisma-driver-adapters/prisma.config.ts

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+import 'dotenv/config'
+import { defineConfig } from 'prisma/config'
+
+export default defineConfig({
+  migrations: {
+    seed: `bun run prisma/seed.ts`,
+  },
+})