Examine source code of YouTube Local Library

{
  "manifest_version": 2,
  "name": "YouTube Local Library",
  "description": "Create YouTube playlists locally",
  "version": "1.1.1",
  "permissions": [
    "contextMenus",
    "storage",
    "tabs",
    "activeTab",
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "dist/js/background.min.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "dist/js/content.min.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "index.html",
    "default_icon": {
      "16": "images/icon16.png",
      "32": "images/icon32.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "web_accessible_resources": [
    "library.html",
    "playlist.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "79.0",
      "id": "{0410c05a-c64c-4df1-9ddf-970b0dfbfe85}"
    }
  }
}