Supabase is an open source Firebase alternative. Start your project with a Postgres database, Authentication, instant APIs, Edge Functions, Realtime subscriptions, and Storage.

Supabase

I just didn't understand what the documentation was saying, I've got it working with upsert instead now.

I also have problem to use update(). I keep receiving
`{
  message: '"failed to parse order (eq.1)" (line 1, column 4)',
  details: 'unexpected "1" expecting "asc", "desc", "nullsfirst" or "nullslast"'
}
`
I have tried the examples in the docs (https://supabase.io/docs/reference/javascript/update).

Problem solved. The examples provided under "API" (in the menu to the left for each project) was easier to understand.