Allow to inject fetch to objectloader constructor

packages/objectloader/examples/node/script.js

@@ -1 +1,24 @@
-// NOTE: This lib is not working in node, because node-fetch returns node-native readable streams - we need a workaround first. 
+// Since Node v<18 does not provide fetch, we need to pass it in the options object. Note that fetch must return a WHATWG compliant stream, so cross-fetch won't work, but node/undici's implementation will.
+
+import { fetch } from 'undici'
+import ObjectLoader from '../../index.js'
+
+let loader = new ObjectLoader({
+  serverUrl:"https://latest.speckle.dev",
+  streamId:"3ed8357f29",
+  objectId:"0408ab9caaa2ebefb2dd7f1f671e7555",
+  options:{ enableCaching: false, excludeProps:[], fetch }
+})
+
+
+let loadData = async function loadData() {
+
+  let obj = await loader.getAndConstructObject((e) =>{
+    console.log(e) // log progress!
+  })
+
+  console.log('Done!')
+  console.log( obj )
+}
+
+loadData()