Examine source code of Breez ClickOnce

{
  "browser_specific_settings": {
    "gecko": {
      "id": "breezclickonce@breezie.be"
    }
  },
  "name": "Breez ClickOnce",
  "description": "Enable ClickOnce support in Mozilla Firefox.",
  "version": "1.6",
  "manifest_version": 3,
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "nativeMessaging",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "host_permissions": [
    "*://*/*"
  ],
  "icons": {
    "16": "icons/breezclickonce-16.png",
    "32": "icons/breezclickonce-32.png",
    "48": "icons/breezclickonce-48.png",
    "64": "icons/breezclickonce-64.png",
    "128": "icons/breezclickonce-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content.js",
        "windowObjectHelper.js",
        "modalHelper.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "windowObjectHelper.js",
        "modalHelper.js"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ]
}