tsconfig.json

{
  "compilerOptions": {
    "target": "es6",
    "lib": ["es2019"],
    "module": "commonjs",
    "outDir": "./build",
    "strict": true,
    "moduleResolution": "node",
    "baseUrl": "./",
    "esModuleInterop": true,
    "resolveJsonModule": true,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "forceConsistentCasingInFileNames": true
  },
  "include": ["app/**/*"],
  "exclude": ["node_modules", "**/*.test.ts"]
}