leemorgan_dev/src/lib/server/mongo.js

import { MongoClient } from 'mongodb';
import { APP_ENV, MONGODB_PASS } from '$app/env/private';

function uri() {
	if (APP_ENV === 'production') {
		const pass = encodeURIComponent(MONGODB_PASS);
		return `mongodb://leemorgan:${pass}@127.0.0.1:27017/leemorgan?authSource=admin`;
	}

	return 'mongodb://127.0.0.1:27017/leemorgan';
}

/** @type {MongoClient | undefined} */
let client;

export async function getDb() {
	if (!client) {
		client = new MongoClient(uri());
		await client.connect();
	}

	return client.db('leemorgan');
}