Examine source code of GitHub SHA Compare

{
  "manifest_version" : 3 ,
  "name" : "GitHub SHA Compare",
  "version" : "1.1",
  "description" : "Adds a button to compare branches with specific SHA",
  "icons" : {
    "128" : "icon.svg"
  },
  "permissions" : [
    "activeTab" 
  ],
  "content_scripts" : [
    {
      "matches" : [
        "*://github.com/*/*" 
      ],
      "js" : [
        "content.js" 
      ],
      "css" : [
        "styles.css" 
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "missing-gh-compare@kitallis.in",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}