Examine source code of Public Editor

{
  "manifest_version": 3,
  "name": "Public Editor",
  "description": "This extension checks if Public Editor has the current page among its scored articles.",
  "version": "1.0",
  "icons": {
    "16": "images/PE-Logo-Beta-16.png",
    "32": "images/PE-Logo-Beta-32.png",
    "48": "images/PE-Logo-Beta-48.png",
    "128": "images/PE-Logo-Beta-128.png"
  },
  "background": {
    "scripts": [
      "service-worker.js"
    ]
  },
  "host_permissions": [
    "https://newsreader.publiceditor.io/api/get-article-link/",
    "https://app.publiceditor.io/article_funnel/api/article-save/"
  ],
  "permissions": [
    "storage",
    "activeTab"
  ],
  "action": {
    "default_title": "This extension checks if Public Editor has the current page among its scored articles.",
    "default_popup": "index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "Public-Editor@publiceditor.io"
    }
  }
}