Examine source code of Unrecommender

{
  "manifest_version": 2,
  "name": "Unrecommender",
  "description": "An extension that filters YouTube recommendations based on your subscriptions and the channel you're watching.",
  "version": "2.0.8",
  "browser_action": {
    "default_icon": {
      "16": "img/icon_16.png",
      "32": "img/icon_32.png"
    },
    "default_title": "Unrecommender"
  },
  "permissions": [],
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "js/jquery-3.5.1.min.js",
        "js/main.js"
      ]
    }
  ],
  "icons": {
    "16": "img/icon_16.png",
    "32": "img/icon_32.png",
    "64": "img/icon_64.png",
    "128": "img/icon_128.png"
  }
}