tsconfig.json

{
  "compilerOptions": {
    "baseUrl": ".",
    "outDir": "dist",
    "sourceMap": false,
    "target": "ES2015",
    "module": "es6",
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "declaration": true,
    "allowJs": false,
    "allowSyntheticDefaultImports": true,
    "noUnusedLocals": true,
    "strictNullChecks": true,
    "noImplicitAny": true,
    "removeComments": false,
    "lib": ["es2015", "es6", "es7", "dom"]
  },
  "include": ["src", "typings"],
  "exclude": ["node_modules"]
}