Examine source code of Youtube-shorts remove

{
  "manifest_version": 2,
  "name": "Youtube-shorts remove",
  "version": "0.1",
  "description": "Remove from your youtube homepage the 'Shorts' section, simple as that.",
  "icons": {
    "128": "icons/icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "all_frames": true,
      "js": [
        "main.js"
      ]
    }
  ],
  "action": {
    "default_icon": {
      "128": "icons/icon.png"
    },
    "default_title": "Youtube-shorts remove",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{31103188-d0a8-4dfb-b3c3-17dfd052c85b}"
    }
  }
}