Examine source code of nurl

{
  "name": "nurl",
  "description": "A Neo URL Resolver",
  "version": "1.1",
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "edge@nurl"
    }
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://*.neo/"
  ],
  "background": {
    "scripts": [
      "resolver.js"
    ],
    "persistent": true
  },
  "icons": {
    "96": "icons/icon.png"
  }
}