Examine source code of go/lyft

{
  "manifest_version": 2,
  "name": "go/lyft",
  "version": "1.0",
  "description": "Expands go/... links for the internal Lyft URL shortener.",
  "icons": {
    "48": "icons/golyft48.png",
    "96": "icons/golyft96.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://go/*"
  ],
  "background": {
    "scripts": [
      "golyft.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "57.0"
    }
  }
}