manifest.json

{
  "name": "Team Calendar",
  "version": "0.7.0",
  "permissions": [
    "declarativeContent",
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "https://*.at.three.com/*/Calendar*"
  ],  
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
    "16": "images/get_started16.png",
    "32": "images/get_started32.png",
    "48": "images/get_started48.png",
    "128": "images/get_started128.png"
    }
  },
  "icons": {
      "16": "images/get_started16.png",
      "32": "images/get_started32.png",
      "48": "images/get_started48.png",
      "128": "images/get_started128.png"
  },
  "background": {
    "service_worker": "background.js"
  },
  "content_scripts": [
      {
        "matches": ["https://*.at.three.com/*/Calendar*"],
        "js": ["drei_calendar.js"],
        "run_at": "document_end"
      }
  ],
  "manifest_version": 3
}