Examine source code of Twitch Live Categories

{
  "manifest_version": 2,
  "name": "Twitch Live Categories",
  "version": "1.0",
  "description": "Moves the live categories section to the top of the page on Twitch's following directory",
  "icons": {
    "48": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.twitch.tv/directory/following*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "twitch-live-categories@yourdomain.com",
      "strict_min_version": "69.0"
    }
  }
}