Examine source code of No Shorts Please

{
  "manifest_version": 2,
  "name": "NoShortsPlease",
  "version": "1.0.0",
  "description": "Removes those pesky shorts from your YouTube subscription feed.",
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/feed/*"
      ],
      "js": [
        "build/js/packages/firefox-anti-shorts-extension/kotlin/kotlin-kotlin-stdlib-js-ir.js",
        "build/js/packages/firefox-anti-shorts-extension/kotlin/kotlin_org_jetbrains_kotlinx_kotlinx_html.js",
        "build/js/packages/firefox-anti-shorts-extension/kotlin/firefox-anti-shorts-extension.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{eee7396f-9b32-4228-9545-b000b655d25d}"
    }
  }
}