Examine source code of Google Meet Portal

{
  "manifest_version": 2,
  "name": "Google Meet Portal",
  "version": "0.2.0",
  "description": "Allows to see the participants in a Google Meet call from other tabs.",
  "icons": {
    "128": "assets/icons/icon-inactive.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://meet.google.com/*"
      ],
      "js": [
        "server.js"
      ]
    },
    {
      "matches": [
        "*://*/*"
      ],
      "exclude_matches": [
        "*://meet.google.com/*"
      ],
      "js": [
        "client.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_title": "Click to enable Google Meet Portal"
  },
  "web_accessible_resources": [
    "widget.js",
    "assets/*"
  ],
  "permissions": [
    "activeTab",
    "tabs",
    "<all_urls>"
  ]
}