Examine source code of DisableShorts

{
  "manifest_version": 2,
  "name": "DisableShorts",
  "description": "YouTube Shortsを無効化し、快適な動画視聴にします。",
  "version": "1.0.0",
  "icons": {
    "480": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "all_frames": true,
      "js": [
        "main.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{648a4117-286d-4a1e-9026-035297e31282}"
    }
  }
}