Examine source code of Wikipedia Reading Lists

{
  "name": "Wikipedia Reading Lists",
  "description": "Save Wikipedia articles to read on Wikipedia’s iOS and Android apps",
  "version": "1.2resigned1",
  "manifest_version": 2,
  "permissions": [
    "tabs",
    "https://*.wikipedia.org/",
    "https://*.wikivoyage.org/"
  ],
  "background": {
    "scripts": [
      "dist/browser-polyfill.min.js",
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "js": [
        "dist/browser-polyfill.min.js",
        "content.js"
      ],
      "matches": [
        "https://*.wikipedia.org/*",
        "https://*.wikivoyage.org/*"
      ]
    }
  ],
  "page_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon_Addtolist_48x48.png",
      "32": "icon_Addtolist_48x48.png",
      "48": "icon_Addtolist_48x48.png",
      "128": "icon_Addtolist_128x128.png"
    }
  },
  "icons": {
    "16": "icon_Addtolist_48x48.png",
    "32": "icon_Addtolist_48x48.png",
    "48": "icon_Addtolist_48x48.png",
    "128": "icon_Addtolist_128x128.png"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+A",
        "mac": "MacCtrl+Shift+A"
      },
      "description": "Add the current page to the default reading list"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4973c520-85e8-4ca2-9ca8-aab96a29d9f2}"
    }
  }
}