Examine source code of Browser History Export

{
  "manifest_version": 2,
  "name": "Browser History Export",
  "version": "2.2",
  "description": "Export your browser history in an encrypted format.",
  "permissions": [
    "history",
    "storage"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "browser-history-export@driesdepoorter.be",
      "strict_min_version": "79.0"
    }
  }
}