message: yo generator: turn on strict and strictNullChecks in the template
diff: "node_modules"
  ],
  "compilerOptions": {
  - "target": "es6",
  + "strict": true,
  + "strictNullChecks": true,
  + "target": "es2017",
  "noImplicitAny": false,
  "noUnusedLocals": true,
  "module": "esnext",
  