What is the canonical idiom for importing Sigma Js ( or npm libs packaged in a similar manner )

[tantilla]

This is not an issue with Fresh, forgive my ignorance of ssr, vite, etc...

I am trying to get a simple example such as this working:

import Graph from "graphology";
import Sigma from "sigma";

const graph = new Graph();
graph.addNode("1", { label: "Node 1", x: 0, y: 0, size: 10, color: "blue" });
graph.addNode("2", { label: "Node 2", x: 1, y: 1, size: 20, color: "red" });
const renderer = new Sigma(
  graph,
  document.getElementById("container") as HTMLDivElement
);

Which I imagine should go into an island file with a simple preact wrapper like:

export function SigmaGraph() {
  const containerRef = useRef<HTMLDivElement>(null);

  useEffect(() => {
    if (!containerRef.current) return;

// Do Sigma init here

  }, [containerRef.current]);

  return (
    <div
      ref={containerRef}
      style={{ width: "100%", height: "100vh", background: "#888" }}
    >
    </div>
  );
}

In deno.json I have these import entries:

    "graphology": "npm:graphology@0.26.0",
    "sigma": "npm:sigma@3.0.2",

The issue is the Graphology import throws errors in the island for apparent babel / node style imports and the Sigma import throws errors because it has browser only deps that should only be accessed behind IS_BROWSER. I have tried placating the vite's dismissal of the Graphology import with node polyfills, but only came up with a plethora of other errors and dynamically importing Sigma after IS_BROWER but got "TypeError: Failed to fetch dynamically imported module" with what looks like a valid path to the node_modules package. I can import Graphology in an api file, so I began scheming on doing the graph work there and passing a serialized result downstream or including simple cdn imports in the app html template and somehow accessing them, but before I go down any ratholes, wanted to check here first, as I feel I am fundamentally missing how Fresh and ssr work, as it shouldn't be this difficult to get started... Thanks for any advice or links to RTFM.