Examine source code of Random Bookmarks

{
  "version": "0.1.8",
  "manifest_version": 2,
  "name": "Random Bookmarks",
  "short_name": "random-bookmarks",
  "description": "open a random firefox bookmarks with a specific label in a new tab",
  "permissions": [
    "activeTab",
    "bookmarks",
    "contextMenus",
    "downloads",
    "storage",
    "tabs",
    "unlimitedStorage",
    "https://lab.magiconch.com/*",
    "https://api.bilibili.com/*"
  ],
  "browser_action": {
    "default_title": "random-bookmarks",
    "default_popup": "assets/html/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.douban.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "icons": {
    "48": "assets/images/logo_48.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "web_accessible_resources": [
    "assets/**"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'; connect-src https://lab.magiconch.com https://api.bilibili.com;",
  "incognito": "spanning",
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "58.0",
      "id": "{ee225a98-8866-47ea-9568-a1e7b59be8f4}"
    }
  }
}