Examine source code of LeProxy Switcher

{
  "manifest_version": 2,
  "name": "LeProxy Switcher",
  "version": "1.6.1",
  "description": "A simple proxy switcher for Firefox that supports PAC and manual configurations with multiple slots.",
  "permissions": [
    "proxy",
    "storage",
    "webRequest",
    "activeTab",
    "privacy",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/le16.png",
      "32": "images/le32.png",
      "128": "images/le128.png"
    }
  },
  "icons": {
    "16": "images/le16.png",
    "32": "images/le32.png",
    "128": "images/le128.png"
  },
  "web_accessible_resources": [
    "pac_viewer.html",
    "pac_viewer.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "leproxy-switcher@multiai-chat.com",
      "strict_min_version": "91.1.0"
    }
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'"
}