Examine source code of Needle Extension

{
  "manifest_version": 3,
  "name": "Needle Extension",
  "description": "Partagez facilement du contenu sur Needle",
  "version": "1.0.23",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "tabs"
  ],
  "action": {
    "default_title": "Add to my yarn",
    "default_popup": "index.html",
    "options_page": "options.html"
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "host_permissions": [
    "*://*.needle.social/*",
    "*://needle.social/*"
  ],
  "icons": {
    "48": "icon48.png",
    "96": "icon96.png",
    "128": "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "needle@profluens.com",
      "strict_min_version": "109.0"
    }
  }
}