tsconfig.root.json

{
  "compileOnSave": true,
  "compilerOptions": {
    "allowSyntheticDefaultImports": true,
    "experimentalDecorators": true,
    "moduleResolution": "node",
    "noImplicitAny": false,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "removeComments": false,
    "resolveJsonModule": true,
    "skipLibCheck": true,
    "strictNullChecks": true,
    "target": "ES2015"
  }
}