Examine source code of Eclipse Convert - Fast Currency Converter

{
  "manifest_version": 3,
  "name": "Eclipse Convert - Fast Currency Converter",
  "description": "Highlight any currency amount on a webpage to convert currency.",
  "version": "1.0.2",
  "browser_specific_settings": {
    "gecko": {
      "id": "eclipseconvert@extension",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": "icons/icon-48.png"
  },
  "background": {
    "service_worker": "background/index.js",
    "scripts": [
      "background/index.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://cdn.jsdelivr.net/*",
    "https://*.currency-api.pages.dev/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/index.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "icons/icon.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}