Examine source code of Filter Youtube Comments

{
  "manifest_version": 3,
  "name": "Youtube Comments Filter",
  "version": "1.0",
  "description": "An extension to filter YouTube comments based on user-defined keywords with some other things.",
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "youtube-comments-filter@udin.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/filter.png",
    "24": "icons/filter.png",
    "32": "icons/filter.png",
    "48": "icons/filter.png",
    "128": "icons/filter.png",
    "512": "icons/filter.png"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "Filter YouTube Comments",
    "default_icon": {
      "16": "icons/filter.png",
      "24": "icons/filter.png",
      "32": "icons/filter.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  }
}