Node.js installGlobals() breaks Jest line numbers / source maps

[esamattis]

This is not necessarily an issue in Remix but posting this here since there doesn't seem to be any other reports about this.

It seems that if you use

import { installGlobals } from "@remix-run/node";
installGlobals();

to add global Fetch and Request / Response classes in Jest line numbering in expectation / assertion messages will be off.

No sure why this happens because installGlobals() doesn't seem to do anything related to it:

remix/packages/remix-node/globals.ts

Lines 44 to 59 in 5b8a0ce

	export function installGlobals() {
	global.atob = atob;
	global.btoa = btoa;
	global.Blob = NodeBlob as unknown as typeof Blob;
	global.File = NodeFile as unknown as typeof File;
	global.Headers = NodeHeaders as unknown as typeof Headers;
	global.Request = NodeRequest as unknown as typeof Request;
	global.Response = NodeResponse as unknown as typeof Response;
	global.fetch = nodeFetch as unknown as typeof fetch;
	global.FormData = NodeFormData as unknown as typeof FormData;
	global.sign = remixSign;
	global.unsign = remixUnsign;
	}

For my use case I was able to just import the Request class from node-fetch.

[petergledhillinclusive]

Thanks for pointing this out, I have experienced this too and it makes our jest tests very hard to debug. We seem to get the correct name of the failing test but the line numbers are from a different test.

I tried using node-fetch but it doesn't cover the full range of changes that remix 'installGlobals' does.