Examine source code of easycache

{
  "action": {
    "default_icon": "icon128.png",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "service_worker.js"
    ],
    "type": "module"
  },
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "{6c625cfb-bbdd-4378-bef3-271e77b091df}",
      "strict_min_version": "130.0"
    }
  },
  "description": "An interface for web archivers (Wayback Machine, archive.is). Supports adding custom providers.",
  "icons": {
    "128": "icon128.png"
  },
  "manifest_version": 3,
  "name": "easycache",
  "options_page": "options.html",
  "permissions": [
    "contextMenus",
    "activeTab",
    "storage"
  ],
  "version": "3.1.0"
}