tsconfig.json

{
  "compilerOptions": {
    "esModuleInterop": true,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "strictPropertyInitialization": false,
    "lib": [
      "es2019",
      "es2020"
    ],
    "module": "commonjs",
    "target": "es2019",
    "sourceMap": true,
    "moduleResolution": "node",
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "types": [
      "node",
      "reflect-metadata"
    ],
    "resolveJsonModule": true,
    "importHelpers": false,
    "declaration": true,
    "strict": true,
    "outDir": "dist",
    "baseUrl": ".",
    "paths": {
      "*": [
        "./node_modules/*"
      ]
    },
    "typeRoots": [
      "./node_modules/@types"
    ]
  },
  "include": [ "lib/**/*.ts", "handlers/*.ts" ],
  "exclude": [
    "node_modules",
    "**/*.spec.ts"
  ]
}