Use base64 library to encode basic auth 🤦

Buffer being not enabled on Vercel Edge Functions

src/routes/shop/+layout.server.ts

@@ -1,5 +1,6 @@
 import { error } from '@sveltejs/kit'
 import type { PageServerLoad } from './$types'
+import base64 from 'base-64'
 import { fetchAPI } from '$utils/api'
 import { PUBLIC_SWELL_STORE_ID } from '$env/static/public'
 import { SWELL_API_TOKEN, SWELL_API_ENDPOINT } from '$env/static/private'
@@ -58,7 +59,7 @@ export const load: PageServerLoad = async () => {
          */
         const shopProductsRes: any = await fetch(`${SWELL_API_ENDPOINT}/products`, {
             headers: {
-                Authorization: `Basic ${Buffer.from(`${PUBLIC_SWELL_STORE_ID}:${SWELL_API_TOKEN}`).toString('base64')}`
+                Authorization: `Basic ${base64.encode(`${PUBLIC_SWELL_STORE_ID}:${SWELL_API_TOKEN}`)}`
             },
         })
         const shopProducts = await shopProductsRes.json()