Examine source code of Time Code Saver

{
  "name": "Time Code Saver",
  "description": "Save current YouTube/Twitch video time code in URL",
  "version": "3.0.1",
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*",
        "https://www.twitch.tv/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_action": {
    "default_title": "Time Code Saver"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "icons": {
    "256": "icon/logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{413962d6-9acd-4998-8277-a67021091f47}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "manifest_version": 2
}