Isomorphic Fetch

[saul-jb]

I have removed node-fetch in favor of the default fetch implementation or window.fetch making it compatible in both nodejs and the browser.

There is also the ability to pass a custom fetch method if you are in an environment where both window.fetch and global fetch is undefined such as older versions of nodejs:

import { Ollama } from "ollama";
import fetch from "node-fetch";

const ollama = new Ollama({ fetch });

[jmorganca]

Awesome!!