Examine source code of Snake Feast

{
  "manifest_version": 3,
  "name": "Snake Feast",
  "version": "1.2.1",
  "description": "Welcome to Snake Feast, the ultimate challenge for slither enthusiasts! Devour delicious food to grow your snake while navigating the dangers of the border.",
  "action": {
    "default_popup": "index.html"
  },
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "64": "icons/64.png",
    "256": "icons/snakelogo3.png"
  },
  "permissions": [],
  "background": {
    "scripts": [
      "sw.js"
    ]
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "img/start.png",
        "img/snakeGame.png",
        "img/snakeGameOver.png",
        "img/background1.png",
        "img/microsoft.png",
        "icons/16.png",
        "icons/32.png",
        "icons/48.png",
        "icons/64.png",
        "icons/snakelogo3.png",
        "jquery.min.js",
        "index.html",
        "script.js",
        "style.css",
        "sw.js",
        "manifest.json"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "snakefeast@domain.com"
    }
  },
  "homepage_url": "https://feast-snake.netlify.app/"
}