Examine source code of Twitch Enhancer

{
  "manifest_version": 2,
  "name": "Twitch Enhancer",
  "version": "1.0",
  "description": "Enhance your Twitch viewing experience with additional features.",
  "permissions": [
    "activeTab",
    "storage",
    "https://www.twitch.tv/*"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.twitch.tv/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "Twitch Enhancer",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7536cf64-c87c-40bc-97b1-9b6bb4b9e7f0}"
    }
  }
}