Error parsing triggers: Cannot find module 'csv-parse/sync'

Describe the bug

When I try to use csv-parse/sync instead of csv-parse, my deploy to Firebase Functions fail with the following error:

Error: Error parsing triggers: Cannot find module 'csv-parse/sync''
Require stack:
- /Users/xxx/Programming/xxx/Firebase Functions/xxx/functions/lib/index.js
- /usr/local/lib/node_modules/firebase-tools/lib/deploy/functions/runtimes/node/triggerParser.js

Try running "npm install" in your functions directory before deploying.

To Reproduce

Import using:

import { parse } from 'csv-parse/sync';

Then use in code like this:

interface EventData {
	update: string;
	id: string;
	title: string;
	description: string;
	category: string;
	ages: string;
	place: string;
	placeCoordinate: string;
	startDate: string;
	startTime: string;
	length: string;
	url: string;
	arrName: string;
  }


let events: Array<EventData> = []
const headers = ["update", "id", "title", "description", "ages", "place", "placeCoordinate", "startDate", "startTime", "length", "url", "arrEpost", "arrName", "validated", "skugg"]
try {
    events = parse(text, {columns: headers, from: 6, quote: "\"", delimiter: ";", ltrim: true, rtrim: true})
}...

I have installed by going to /functions-folder and running

npm install --save csv-parse

Deploying in root folder with

firebase deploy

Additional context

Is this an issue with the framework, with firebase or am I doing something wrong? Normal use of "csv-parse" without sync works just fine.

Start by reproducing the import and deployment from the functions directory, using functions/lib/index.js and the triggerParser.js stack trace as the entry points. Check how csv-parse/sync is installed and resolved during Firebase Functions deployment; done means the documented import deploys successfully without the module-not-found error.