tsconfig.json

{
    "compilerOptions": {
      "target": "es5",
      "module": "esnext",
      "declaration": true,
      "declarationDir": "dist/types",
      "outDir": "dist",
      "strict": true,
      "esModuleInterop": true,
      "moduleResolution": "node"
    },
    "include": ["src"],
    "exclude": ["node_modules", "dist"]
  }