Examine source code of Hide YouTubeShorts

{
  "manifest_version": 3,
  "name": "Hide YouTube Shorts",
  "version": "1.0",
  "description": "Hide YouTube Shorts from the homepage, recommendations, and search results. (Keeps Shorts in the Shorts tab.)",
  "icons": {
    "48": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "hide-youtube-shorts@firefoxIsBetter"
    }
  }
}