Examine source code of Outlook2When2meet

{
  "name": "Outlook2When2meet",
  "version": "0.3.2",
  "description": "A Firefox extension to fill out [When2meet](https://www.when2meet.com) forms based on availability in Outlook web calendar.",
  "homepage_url": "https://github.com/thisIsMikeKane/outlook2when2meet",
  "manifest_version": 3,
  "content_security_policy": {
    "extension_pages": "default-src 'self'; connect-src https://login.microsoftonline.com/ https://graph.microsoft.com/;"
  },
  "permissions": [
    "activeTab",
    "notifications",
    "storage",
    "tabs",
    "identity"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "Outlook2When2meet@thisismikekane.com",
      "strict_min_version": "109.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_icon": {
      "16": "calendar-16px.png",
      "32": "calendar-32px.png",
      "48": "calendar-48px.png",
      "64": "calendar-64px.png",
      "128": "calendar-128px.png"
    },
    "default_title": "Outlook2When2meet"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.when2meet.com/*"
      ],
      "js": [
        "content_scripts.js"
      ]
    }
  ]
}