Examine source code of Feed Eater

{
  "name": "Feed Eater",
  "description": "Block algorithmic feeds, and some other bothersome web features.",
  "homepage_url": "https://github.com/smackcrane/friction",
  "author": "Sander Mack-Crane",
  "version": "1.0.2",
  "icons": {
    "48": "icons/rainy-heavy-48.png",
    "128": "icons/rainy-heavy-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "feedEater.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c6aa8ee1-aca8-445b-a703-e348c934c97f}"
    }
  },
  "manifest_version": 3
}