Examine source code of StopYelling

{
  "manifest_version": 3,
  "name": "StopYelling",
  "version": "1.4.0",
  "description": "Converts obnoxious UPPERCASE stream titles to sentence-case.",
  "icons": {
    "48": "icons/48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c9fccb44-2bae-4fc9-a355-452871919bd4}",
      "strict_min_version": "109.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.twitch.tv/*",
        "*://*.youtube.com/*"
      ],
      "js": [
        "domObserverUtil.js",
        "stopYelling.js",
        "twitch.js",
        "youtube.js"
      ]
    }
  ]
}