tsconfig.json

{
  "compilerOptions": {
    "sourceMap": true,
    "target": "es2017",
    "declaration": true,
    "moduleResolution": "node",
    "module": "commonjs",
    "strictNullChecks": true,
    "noImplicitThis": true,
    "noImplicitAny": true,
    "noImplicitReturns": true,
    "experimentalDecorators": true
  },
  "include": [
    "server.ts",
    "index.ts",
    "app",
    "bin",
    "test"
  ],
  "compileOnSave": true
}