Universal Node.js Fetch with Agent Support

node-fetch-native-with-agent is a fork of node-fetch-native that provides a universal `fetch` implementation for Node.js, designed for compatibility across various Node.js versions and environments. It intelligently prefers the native `fetch` global (backed by Undici) when available in newer Node.js versions and falls back to a bundled `node-fetch v3` implementation for older versions, all while supporting both CommonJS (`require`) and ESM (`import`). Its key differentiator is the compact size, zero direct dependencies for the core, and robust built-in proxy support via custom agents, which is a common challenge with native `fetch` in Node.js. The current stable version is 1.7.2, with minor fixes released as needed, indicating an active maintenance cadence. It also includes polyfill capabilities to make `fetch` globally available. This package aims to solve the `node-fetch` v2 vs v3 dependency conflicts and the lack of straightforward proxy support with Node.js's native `fetch`.