Preact table state

Before starting, run intent load @tanstack/table-core#table-state for shared ownership, initialization, updates, and resets. State repair does not require loading setup guidance.

Read reactive state

useTable selects all registered state by default. Its optional second-argument selector controls rerenders and the shape of table.state. table.atoms.<slice>.get() and table.store.state are current snapshots, not Preact subscriptions.

Use selected table.state in the owner render. For narrower boundaries, use table.Subscribe or useSelector from @tanstack/preact-store. Without source, table.Subscribe selects from table.store; with source, it subscribes to that atom or store. Start with the default selector until render cost requires narrowing.

Control a slice

Keep features, columns, and data stable. Register the feature that owns the controlled slice. This example controls pagination without adding client row processing:

import { useState } from 'preact/hooks'
import {
  rowPaginationFeature,
  tableFeatures,
  useTable,
  type PaginationState,
} from '@tanstack/preact-table'

const features = tableFeatures({ rowPaginationFeature })
const columns = [{ accessorKey: 'name' }]
const data = [{ name: 'Ada' }]

export function PageControl() {
  const [pagination, setPagination] = useState<PaginationState>({
    pageIndex: 0,
    pageSize: 20,
  })
  const table = useTable({
    features,
    columns,
    data,
    state: { pagination },
    onPaginationChange: setPagination,
  })
  return (
    <button onClick={() => table.setPageSize(50)}>
      {table.state.pagination.pageSize} rows per page
    </button>
  )
}

The Preact setter accepts both a value and a functional updater. Supply the current state.pagination together with onPaginationChange; a callback alone does not keep the table synchronized.

For an externally owned atom, create it with useCreateAtom from @tanstack/preact-store, pass it in atoms.<slice>, and subscribe with useSelector where other UI needs its value.

Reactive boundaries

Use native @tanstack/preact-store bindings. A narrowed selector must include every state slice used by rendered builder methods, or those consumers need their own subscription.

For external-atom examples, selector dependencies, or fine-grained boundaries, read reactivity details. If this task changes processing features, run intent load @tanstack/table-core#table-features and read the relevant feature references.

API discovery

Inspect node_modules/@tanstack/preact-table/dist/useTable.d.ts and Subscribe.d.ts, plus the installed @tanstack/preact-store declarations for atom hooks.