Examine source code of TheCrew-Exchange helper

{
  "manifest_version": 2,
  "name": "TheCrew-Exchange",
  "version": "1.2",
  "description": "This extension is here to get your ID from TCHUB to be able to get your summit rank on discord using TheCrewExchange's bot.",
  "content_scripts": [
    {
      "matches": [
        "*://www.thecrew-hub.com/*",
        "*://thecrew-hub.com/*"
      ],
      "js": [
        "tchub.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "tce.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/favicon.png",
    "default_title": "TCE",
    "default_popup": "popup/index.html"
  }
}