Examine source code of E. W. Password Generator

{
  "manifest_version": 3,
  "name": "E. W. Password Generator",
  "short_name": "ewpassext",
  "description": "Extension that allows stateless, website-specific password derivation based on a single master password",
  "version": "1.6.0",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png"
  },
  "permissions": [
    "activeTab",
    "alarms",
    "scripting",
    "storage",
    "webNavigation"
  ],
  "optional_permissions": [
    "clipboardRead"
  ],
  "action": {
    "default_popup": "index.html"
  },
  "background": {
    "scripts": [
      "serviceworker.js"
    ],
    "type": "module"
  },
  "host_permissions": [
    "https://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6d1f30b1-2f6d-48f9-a01a-c32a0c27d12d}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}