tsconfig.json

{
  "compilerOptions": {
    "module": "esnext",
    "target": "esnext",
    "outDir": "dist",

    // "target": "es2016",
    // "module": "commonjs",
    // "outDir": "dist/cjs",

    "rootDir": "src",
    "baseUrl": "src",
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "listEmittedFiles": false,
    "listFiles": false,
    "moduleResolution": "node",
    "pretty": true,
    "resolveJsonModule": true,
    "sourceMap": false,
    "declaration": true,
    "declarationMap": false,
    "forceConsistentCasingInFileNames": true,
    "strict": true,
    "skipLibCheck": true,
    "typeRoots": ["./node_modules/@types", "./typings/"],
    "types": ["node"]
  },
  "compileOnSave": true,
  "include": ["src/**/*.ts", "typings/index.d.ts"],
  "exclude": ["node_modules", "dist"]
}