my-chat-room/apps/api/tsconfig.app.json

{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "outDir": "../../dist/out-tsc",
    "types": ["node"],
    "emitDecoratorMetadata": true,
    "target": "es2015"
  },
  "exclude": ["**/*.spec.ts"],
  "include": ["**/*.ts"]
}