Examine source code of NYT Bee Helper

{
  "manifest_version": 2,
  "name": "Bee Helper",
  "version": "1.0.0",
  "description": "Description here.",
  "icons": {
    "96": "static/icons/bee-96.png"
  },
  "page_action": {
    "default_icon": "static/icons/bee-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.nytimes.com/puzzles/spelling-bee"
      ],
      "js": [
        "js/main.js"
      ],
      "css": [
        "css/main.css"
      ]
    }
  ],
  "permissions": [
    "https://www.nytimes.com/puzzles/spelling-bee"
  ]
}