Examine source code of DGG Everywhere

{
  "browser_specific_settings": {
    "gecko": {
      "id": "{1bdd8873-ca8c-45ba-a46a-6c05c15c4488}"
    }
  },
  "name": "DGG Chat Everywhere",
  "description": "Replaces Live Chats With DGG Chat.",
  "version": "0.2.2",
  "manifest_version": 3,
  "default_locale": "en",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.destiny.gg/*"
      ],
      "js": [
        "src/content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "optional_permissions": [
    "*://*.youtube.com/*",
    "*://*.twitch.tv/*",
    "*://*.kick.com/*",
    "*://*.rumble.com/*"
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "activeTab",
    "storage",
    "scripting"
  ]
}