Examine source code of Jira Exporter

{
  "manifest_version": 2,
  "name": "Jira Exporter",
  "description": "Export Jira tickets to csv file from Jira board",
  "version": "1.2.0",
  "icons": {
    "48": "icon.png",
    "96": "icon.png"
  },
  "browser_action": {
    "default_icon": {
      "48": "icon.png"
    },
    "default_title": "Jira Exporter",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.atlassian.net/*/*"
      ],
      "js": [
        "jira.js"
      ]
    }
  ],
  "permissions": [
    "tabs",
    "activeTab",
    "storage",
    "clipboardWrite"
  ]
}