Examine source code of Switcher

{
  "name": "Switcher",
  "description": "Real time activity log tracker for Jira",
  "version": "0.2.0",
  "manifest_version": 3,
  "action": {
    "default_icon": "./ico/hg_empty.svg",
    "default_popup": "index.html",
    "default_title": "Switcher"
  },
  "icons": {
    "48": "./ico/hg_empty.svg",
    "96": "./ico/hg_empty.svg"
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking"
  ],
  "optional_permissions": [
    "downloads"
  ],
  "host_permissions": [
    "https://*.smartspaces.app/*"
  ],
  "background": {
    "scripts": [
      "swychr_auth_listener.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "autobrooks-swychr@smartspaces.app"
    }
  }
}