Examine source code of Jira Copy Issue Title

{
  "manifest_version": 2,
  "name": "Jira Copy Issue Title",
  "description": "Adds a 'Copy Issue Title' button to 'Browse' and 'Issues' Jira pages",
  "version": "3.0.1",
  "permissions": [
    "storage",
    "clipboardWrite"
  ],
  "commands": {
    "copy-to-clipboard": {
      "suggested_key": {
        "default": "Ctrl+Alt+C"
      },
      "description": "Copy to clipboard"
    }
  },
  "browser_action": {
    "default_title": "Jira Copy Issue Title"
  },
  "options_ui": {
    "page": "/pages/options/index.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "/shared/utils.js",
        "/shared/settings.js",
        "/shared/dom.js",
        "jira-copy-issue-title.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "jira-notifications.js"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "pazitiv@gmail.com"
    }
  }
}