Examine source code of Facebook Feed Cleaner

{
  "manifest_version": 3,
  "name": "Facebook Feed Cleaner — Ads, Reels & More",
  "short_name": "Feed Cleaner",
  "version": "2.1.0",
  "description": "Hide Sponsored ads, suggested posts, Reels and sidebars on Facebook. Ads are caught before they can flash past as you scroll.",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "*://*.facebook.com/*"
  ],
  "action": {
    "default_title": "Facebook Feed Cleaner",
    "default_popup": "src/popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.facebook.com/*"
      ],
      "js": [
        "src/content.js"
      ],
      "css": [
        "src/content.css"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "facebook-feed-customizer@local",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}