isomorphic-fetch provides a consistent, spec-compliant fetch API for both Node.js and browsers. This package allows developers to write universal JavaScript code that can perform HTTP requests seamlessly on either the client or server-side without requiring conditional logic or separate implementations. It bundles node-fetch when running on the server and utilizes the browser's native fetch API when available, ensuring a unified and familiar fetching experience regardless of the environment. It allows developers to leverage features like promises, streams, and request/response objects.