Examine source code of Proxy Manager

{
  "manifest_version": 2,
  "name": "Proxy Manager",
  "version": "1.9.32",
  "description": "Manage and switch between multiple proxy servers with ease.",
  "author": "JP IT Services Pte. Ltd.",
  "homepage_url": "https://www.jpitsingapore.com/",
  "permissions": [
    "proxy",
    "storage",
    "downloads",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "bypass.js",
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "48": "icons/icon-48.png"
    },
    "default_title": "Proxy Manager"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "proxy-manager@local.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}