Examine source code of Slotify

{
  "manifest_version": 2,
  "name": "Slotify",
  "version": "1.0.1",
  "description": "Smart scheduling made simple - Book meetings, manage availability, and sync calendars effortlessly",
  "permissions": [
    "storage",
    "activeTab",
    "clipboardWrite",
    "https://api.slotify.ca/*",
    "https://accounts.google.com/*",
    "https://login.microsoftonline.com/*"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "index.html",
    "oauth-callback.html",
    "oauth-callback.js",
    "assets/*",
    "icons/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{90a8e86b-3ec4-451b-ad9d-f3a3382d4138}"
    }
  }
}