Examine source code of TaskLink

{
  "manifest_version": 3,
  "name": "TaskLink",
  "version": "1.0.0",
  "description": "Create Google Calendar reading tasks from any link or page",
  "permissions": [
    "contextMenus",
    "storage",
    "identity",
    "tabs",
    "notifications"
  ],
  "host_permissions": [
    "https://www.googleapis.com/*",
    "https://accounts.google.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tasklink@yoursite.com",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}