tsconfig.json

{
  "compilerOptions": {
    "target": "ES6",
    "module": "ES6",
    "lib": ["es2017", "es7", "es6", "dom"],
    "baseUrl": ".",
    "strict": false,
    "esModuleInterop": true,
    "downlevelIteration": true,
    "moduleResolution": "node",
    "resolveJsonModule": true
  },
  "include": [
    "lib",
  ]
}