feat(P0-001): scaffold monorepo structure (#60)

Co-authored-by: Jason Woltje <[email protected]>
Co-committed-by: Jason Woltje <[email protected]>

apps/gateway/package.json

@@ -0,0 +1,26 @@
+{
+  "name": "@mosaic/gateway",
+  "version": "0.0.0",
+  "private": true,
+  "main": "dist/main.js",
+  "scripts": {
+    "build": "tsc",
+    "dev": "tsc --watch",
+    "lint": "eslint src",
+    "typecheck": "tsc --noEmit",
+    "test": "vitest run"
+  },
+  "dependencies": {
+    "@nestjs/common": "^11.0.0",
+    "@nestjs/core": "^11.0.0",
+    "@nestjs/platform-fastify": "^11.0.0",
+    "fastify": "^5.0.0",
+    "reflect-metadata": "^0.2.0",
+    "rxjs": "^7.8.0"
+  },
+  "devDependencies": {
+    "@types/node": "^22.0.0",
+    "typescript": "^5.8.0",
+    "vitest": "^2.0.0"
+  }
+}

apps/gateway/src/app.module.ts

@@ -0,0 +1,7 @@
+import { Module } from '@nestjs/common';
+import { HealthController } from './health/health.controller.js';
+
+@Module({
+  controllers: [HealthController],
+})
+export class AppModule {}

apps/gateway/src/health/health.controller.ts

@@ -0,0 +1,9 @@
+import { Controller, Get } from '@nestjs/common';
+
+@Controller('health')
+export class HealthController {
+  @Get()
+  check(): { status: string } {
+    return { status: 'ok' };
+  }
+}

apps/gateway/src/main.ts

@@ -0,0 +1,16 @@
+import 'reflect-metadata';
+import { NestFactory } from '@nestjs/core';
+import { FastifyAdapter, type NestFastifyApplication } from '@nestjs/platform-fastify';
+import { AppModule } from './app.module.js';
+
+async function bootstrap(): Promise<void> {
+  const app = await NestFactory.create<NestFastifyApplication>(AppModule, new FastifyAdapter());
+
+  await app.listen(4000, '0.0.0.0');
+  console.log('Gateway listening on port 4000');
+}
+
+bootstrap().catch((err: unknown) => {
+  console.error(err);
+  process.exit(1);
+});

apps/gateway/tsconfig.json

@@ -0,0 +1,13 @@
+{
+  "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "outDir": "dist",
+    "rootDir": "src",
+    "experimentalDecorators": true,
+    "emitDecoratorMetadata": true,
+    "module": "CommonJS",
+    "moduleResolution": "Node"
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist"]
+}

apps/gateway/vitest.config.ts

@@ -0,0 +1,8 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    globals: true,
+    environment: 'node',
+  },
+});