Examine source code of Twitch Clip Timer

{
  "name": "Twitch Clip Timer",
  "description": "Allows for easy Twitch clip timing courtesy of VidTimer.",
  "version": "1.0.3",
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "twitchframetimer@xiivler.com"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.twitch.tv/*"
      ],
      "js": [
        "jquery-3.6.0.js",
        "content-script.js"
      ]
    }
  ],
  "icons": {
    "16": "/images/16.png",
    "32": "/images/32.png",
    "48": "/images/48.png",
    "128": "/images/128.png"
  }
}