Examine source code of Jira Snippet

{
  "manifest_version": 3,
  "name": "Jira Snippet",
  "version": "2.1",
  "description": "Jira Snippet: Quick copy add-on for customizable issue data. Integrates with Jira Cloud on Chrome, Firefox, Edge, Opera.",
  "homepage_url": "https://github.com/daemonLibra/JiraIssueCopyData",
  "author": "https://github.com/daemonLibra",
  "icons": {
    "48": "icons/logo_48.png"
  },
  "action": {
    "default_icon": "icons/logo_32.png",
    "default_title": "Jira Snippet",
    "default_popup": "popup/info.html"
  },
  "background": {
    "scripts": [
      "scripts/contextMenu.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4bfcf9cb-cac6-499b-a3e1-ebbb806a358a}"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.atlassian.net/*",
        "*://*.atlassian.com/*"
      ],
      "js": [
        "scripts/storage-utils.js",
        "scripts/settings.js",
        "scripts/copybtn.js"
      ],
      "run_at": "document_start",
      "css": [
        "css/style.css"
      ]
    }
  ],
  "permissions": [
    "storage",
    "contextMenus"
  ]
}