Examine source code of Minute Cryptic Enhanced

{
  "manifest_version": 2,
  "name": "Minute Cryptic Enhanced",
  "version": "1.0.0",
  "description": "Adds solve time and streak info to Minute Cryptic share text",
  "browser_specific_settings": {
    "gecko": {
      "id": "@minute-cryptic-enhanced",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://minutecryptic.com/*",
        "*://www.minutecryptic.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ]
}