Examine source code of Nebula Shift Tab

{
  "name": "__MSG_extName__",
  "description": "__MSG_description__",
  "version": "1.4.0",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "default_locale": "en",
  "chrome_url_overrides": {
    "newtab": "new-tab.html"
  },
  "homepage_url": "https://team.firefoxcn.net",
  "icons": {
    "16": "icons/logo.png",
    "32": "icons/logo.png",
    "64": "icons/logo.png",
    "128": "icons/logo.png"
  },
  "manifest_version": 3,
  "permissions": [
    "storage",
    "alarms",
    "unlimitedStorage",
    "contextMenus",
    "tabs"
  ],
  "host_permissions": [
    "*://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "nebula-shift-tab-amo@addon.firefoxcn.net",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "113.0"
    }
  }
}