Examine source code of Teams Chat Exporter

{
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "version": "1.5.0",
  "icons": {
    "16": "icons/action-16.png",
    "32": "icons/action-32.png",
    "48": "icons/action-48.png",
    "128": "icons/action-128.png"
  },
  "default_locale": "en",
  "homepage_url": "https://github.com/gediz/teams-web-chat-exporter",
  "content_security_policy": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self';",
  "browser_specific_settings": {
    "gecko": {
      "id": "n.gedizaydindogmus@gmail.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "optional_permissions": [
    "<all_urls>"
  ],
  "permissions": [
    "scripting",
    "activeTab",
    "downloads",
    "downloads.open",
    "storage",
    "https://*.teams.microsoft.com/*",
    "https://*.teams.microsoft.com.mcas.ms/*",
    "https://*.teams.microsoft.us/*",
    "https://*.teams.microsoft.us.mcas.ms/*",
    "https://*.cloud.microsoft/*",
    "https://*.cloud.microsoft.mcas.ms/*",
    "https://teams.live.com/*",
    "https://teams.live.com.mcas.ms/*",
    "https://graph.microsoft.com/*",
    "https://graph.microsoft.us/*",
    "https://*.asm.skype.com/*",
    "https://*.sharepoint.com/*",
    "https://*.sharepoint.us/*",
    "https://*.sharepoint-mil.us/*",
    "https://*.sharepoint.cn/*",
    "https://*.teams.live.com/*"
  ],
  "web_accessible_resources": [
    "page-helpers/urlp-fetcher.js"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.cloud.microsoft.mcas.ms/*",
        "https://*.cloud.microsoft/*",
        "https://*.teams.microsoft.com.mcas.ms/*",
        "https://*.teams.microsoft.com/*",
        "https://*.teams.microsoft.us.mcas.ms/*",
        "https://*.teams.microsoft.us/*",
        "https://teams.live.com.mcas.ms/*",
        "https://teams.live.com/*"
      ],
      "all_frames": true,
      "run_at": "document_idle",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}