Examine source code of Quick Lookup for Mandarin

{
  "manifest_version": 2,
  "name": "Quick Lookup",
  "description": "Adds a context menu option to quickly look up words on Forvo and yabla.",
  "version": "1.0",
  "homepage_url": "https://github.com/mdn/webextensions-examples/tree/master/context-menu-copy-link-with-types",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "activeTab",
    "contextMenus"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b6a0c553-291b-4e87-a524-6cd29d8854b0}"
    }
  }
}