Examine source code of Copy Azure Devops card ID

{
  "manifest_version": 2,
  "name": "Copy Azure Devops card ID",
  "version": "1.0.1resigned1",
  "description": "Copies the id for the hovered card in Azure Devops Boards.",
  "content_scripts": [
    {
      "js": [
        "copy-id.js"
      ],
      "matches": [
        "*://*.visualstudio.com/*",
        "*://dev.azure.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a5f26081-ba02-43cd-aced-a3609b6983e1}"
    }
  }
}