Examine source code of NativeExt

{
  "manifest_version": 2,
  "name": "NativeExt",
  "short_name": "NativeExt",
  "version": "0.3.3resigned1",
  "author": "Niklas Gollenstede",
  "description": "WebExtensions native connector management extension",
  "icons": {
    "1": "/icon.svg"
  },
  "minimum_chrome_version": "55.0.0",
  "applications": {
    "gecko": {
      "id": "@native-ext",
      "strict_min_version": "59.0"
    }
  },
  "permissions": [
    "storage",
    "nativeMessaging",
    "notifications",
    "sessions",
    "https://*.github.com/*",
    "https://*.s3.amazonaws.com/*"
  ],
  "optional_permissions": [],
  "web_accessible_resources": [],
  "incognito": "spanning",
  "background": {
    "page": "node_modules/web-ext-utils/loader/_background.html"
  },
  "options_ui": {
    "page": "NativeExt#options",
    "open_in_tab": false
  }
}