This skill builds on db-core and db-core/collection-setup. Read those first.

Custom Adapter Authoring

Each call to an adapter's sync() function starts a sync run. The run owns the callbacks and resources installed by that call until its returned cleanup ends them. A sync run may make several backend requests or open a longer-lived provider session, so do not use “request” or “session” as a synonym for the run.

Setup

import { createCollection } from '@tanstack/db'
import type { CollectionConfig } from '@tanstack/db'