Examine source code of YouTube ShortsKeys

{
  "manifest_version": 2,
  "name": "YouTube ShortsKeys",
  "description": "Adds ArrowRight and ArrowLeft keys to YouTube Shorts same as ArrowUp and ArrowDown!",
  "version": "1.1.0",
  "homepage_url": "https://github.com/MrEnoX/youtube-shortskeys",
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://*.youtube-nocookie.com/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "YouTube ShortsKeys",
    "default_icon": {
      "16": "icon.png",
      "24": "icon.png",
      "32": "icon.png"
    }
  },
  "icons": {
    "16": "icon.png",
    "32": "icon.png",
    "48": "icon.png",
    "64": "icon.png",
    "128": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1a149cb8-86f8-408a-a7d8-4b69c84749a6}"
    }
  }
}