Examine source code of Disable Twitter/X Trends

{
  "manifest_version": 2,
  "name": "Disable Twitter/X Trends",
  "version": "2.1",
  "description": "Hides trends on Twitter/X",
  "author": "Hexandcube",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "disabletwittertrends@hexandcube.tk"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.twitter.com/*",
        "*://*.x.com/*"
      ],
      "css": [
        "disabletwittertrends.css"
      ]
    }
  ]
}