update hackernews app to use drizzle and postgres

Author: n1ru4l

examples/hackernews/.env.sample

@@ -0,0 +1 @@
+PG_CONNECTION_STRING=postgres://postgres:postgres@localhost:5432/postgres

examples/hackernews/.gitignore

@@ -1,5 +1,4 @@
 node_modules
 # Keep environment variables out of version control
 .env
-prisma/migrations/migration_lock.toml
-prisma/*.db*
+.pg-data

examples/hackernews/README.md

@@ -3,7 +3,7 @@
 ## Stack
 
 - GraphQL Yoga
-- Prisma
+- Drizzle
 
 ## Tutorial
 

examples/hackernews/docker-compose.yml

@@ -0,0 +1,23 @@
+version: '3.8'
+services:
+  db:
+    image: postgres:14.12-alpine
+    networks:
+      - 'stack'
+    healthcheck:
+      test: ['CMD-SHELL', 'pg_isready -d $${POSTGRES_DB} -U $${POSTGRES_USER}']
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+      POSTGRES_DB: postgres
+      PGDATA: /var/lib/postgresql/data
+    volumes:
+      - ./.pg-data:/var/lib/postgresql/data
+    ports:
+      - '5432:5432'
+
+networks:
+  stack: {}

examples/hackernews/drizzle.config.ts

@@ -0,0 +1,18 @@
+import { defineConfig } from 'drizzle-kit';
+
+export default defineConfig({
+  dialect: 'postgresql',
+  out: './src/drizzle',
+  schema: './src/drizzle/schema.ts',
+  dbCredentials: {
+    host: process.env.DB_HOST!,
+    port: Number(process.env.DB_PORT!),
+    user: process.env.DB_USERNAME!,
+    password: process.env.DB_PASSWORD!,
+    database: process.env.DB_NAME!,
+  },
+  // Print all statements
+  verbose: true,
+  // Always ask for confirmation
+  strict: true,
+});

examples/hackernews/package.json

@@ -1,29 +1,36 @@
 {
   "name": "example-hackernews",
   "version": "4.3.0",
-  "description": "",
-  "author": "",
-  "license": "ISC",
+  "type": "module",
+  "description": "Hackernews API Clone using GraphQL Yoga.",
+  "author": "Laurin Quast",
+  "license": "MIT",
   "private": true,
+  "files": [
+    "Dockerfile",
+    "dist/src",
+    "package.json",
+    "prisma"
+  ],
   "keywords": [],
   "scripts": {
+    "build": "tsc",
     "check": "tsc --pretty --noEmit",
-    "dev": "cross-env NODE_ENV=development ts-node-dev --exit-child --respawn src/main.ts",
-    "migrate": "prisma migrate dev",
-    "postinstall": "prisma generate",
+    "dev": "cross-env NODE_ENV=development node --loader=ts-node/esm --env-file .env --watch src/main.ts",
+    "migrate": "pnpm drizzle-kit generate",
     "start": "ts-node src/main.ts"
   },
   "dependencies": {
+    "drizzle-orm": "0.31.2",
     "graphql": "16.6.0",
-    "graphql-yoga": "workspace:*"
+    "graphql-yoga": "workspace:*",
+    "pg": "8.12.0"
   },
   "devDependencies": {
-    "@prisma/client": "5.13.0",
-    "@prisma/internals": "5.13.0",
-    "@prisma/migrate": "5.13.0",
     "@types/node": "18.16.16",
+    "@types/pg": "8.11.6",
     "cross-env": "7.0.3",
-    "prisma": "5.13.0",
+    "drizzle-kit": "0.22.7",
     "ts-node": "10.9.1",
     "ts-node-dev": "2.0.0",
     "typescript": "5.1.6"

examples/hackernews/prisma/migrations/20220223111842_init/migration.sql

@@ -1,13 +1,5 @@
-import { PrismaClient } from '@prisma/client';
-
-const prisma = new PrismaClient();
+import type { NodePgDatabase } from 'drizzle-orm/node-postgres';
 
 export type GraphQLContext = {
-  prisma: PrismaClient;
+  db: NodePgDatabase;
 };
-
-export async function createContext(): Promise<GraphQLContext> {
-  return {
-    prisma,
-  };
-}