Examine source code of VaultUF

{
  "manifest_version": 2,
  "name": "VaultUF",
  "version": "1.5",
  "description": "Make hashicorp vault screens more user friendly",
  "content_scripts": [
    {
      "matches": [
        "*://*.vault.fed.tmo/*"
      ],
      "js": [
        "vaultMainCS.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "vaultuf@whatever.org",
      "strict_min_version": "42.0"
    }
  }
}