This skill builds on @tanstack/table-core#core plus this package's getting-started and table-state skills.

Setup

import {
  createSortedRowModel,
  createTableHook,
  rowSortingFeature,
  tableFeatures,
} from '@tanstack/lit-table'

const features = tableFeatures({
  rowSortingFeature,
  sortedRowModel: createSortedRowModel(),
})

export const { createAppColumnHelper, useAppTable, useTableContext } =
  createTableHook({
    features,
    getRowId: (row: { id: string }) => row.id,
  })

Use createAppColumnHelper<Person>() to define app columns. In a LitElement, capture the host in a local variable and initialize useAppTable(host, options, selector) once as a field; call the returned table() function during render. The maintained composable-tables example shows the complete host/getter shape.

Core Patterns

Bind shared features, not table-specific data

Put feature plugins, row-model factories, default options, row IDs, and shared render conventions in the factory. Pass each table's columns, data, and controlled state to useAppTable.

Add component registries only for real conventions

Register common cell/header functions when multiple tables use them. Render them through table.AppCell and table.AppHeader; ordinary tables can use the returned table instance without registries.

Consume table context in custom elements

Table-level controls can call the returned useTableContext(this) from a custom element. This preserves the factory's feature and data types without prop drilling.

Common Mistakes

MEDIUM Factory used for one table

Wrong: add an app hook and registries for a single isolated table.

Correct: use TableController directly until features, defaults, or UI conventions genuinely repeat.

The factory adds an application abstraction; it does not replace the simpler standalone path.

Source: TanStack/table:docs/framework/lit/guide/composable-tables.md

HIGH Prop drilling replaces typed context

Wrong: pass the stable table instance through every custom-element property boundary.

Correct: call the useTableContext returned by the same createTableHook in the nearest registered/custom control.

The returned context is bound to the factory's exact features and components.

Source: TanStack/table:packages/lit-table/src/createTableHook.ts

HIGH Recreating useAppTable each render

Wrong: call useAppTable(this, options) afresh inside render.

Correct: initialize it once as a host field and call this.appTable.table() during render.

The helper owns a TableController and context provider tied to the host lifecycle.

Source: TanStack/table:examples/lit/composable-tables

API Discovery

Inspect node_modules/@tanstack/lit-table/dist/createTableHook.d.ts. Use the matching installed implementation rather than assuming JSX-adapter component APIs exist in Lit.