Examine source code of TradingView Live Charts

{
  "manifest_version": 2,
  "name": "TradingView Live Charts",
  "version": "1.1",
  "description": "View stock and cryptocurrency charts live without having to switch to a new tab",
  "homepage_url": "https://gitlab.com/mit-open-source-projects/firefox-extensions/tradingview-charts",
  "icons": {
    "256": "icons/tradingview-icon.ico"
  },
  "browser_action": {
    "default_popup": "/popup/popup.html",
    "default_icon": {
      "256": "icons/tradingview-icon.ico"
    }
  }
}