tsconfig.json

{
  "compilerOptions": {
    "noImplicitAny": true,
    "module": "CommonJS",
    "target": "es5",
    "jsx": "react",
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "baseUrl": ".",
    "removeComments": true,
    "sourceMap": true,
    "forceConsistentCasingInFileNames": true,
    "strictNullChecks": true,
    "allowUnreachableCode": false,
    "allowUnusedLabels": false,
    "noFallthroughCasesInSwitch": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "moduleResolution": "node",
    "declaration": true,
    "lib": [
      "dom",
      "esnext",
      "es6",
      "ES2015.Promise"
    ]
  },
  "exclude": [
    "node_modules",
    "**/*.spec.ts"
  ],
  "include": [
    "packages/**/*.ts"
  ]
}