Table State

What it does

When your agent uses it

• Development work in your project

Example prompts

• “/table-state”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

1. 1Use internal state by default and call feature APIs such as table.setSorting, table.nextPage, column.toggleVisibility, or…
2. 2Use initialState. only to set the starting and reset value. Changing initialState later does not reset the table.
3. 3Prefer a stable external atom in atoms. when Table, Query, routing, or another component must share the slice. Table APIs write that atom…
4. 4Use state. plus its matching on[State]Change for simple React-controlled state or Table V8-style integrations. Always resolve both raw…

What it can do on your machine

Read from SKILL.md and the folder at commit 40fdefd. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Table State loads about 2.2k tokens when it runs. Until then it costs about 73 tokens; SKILL.md has 695 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~73

When it runs · the whole SKILL.md, loaded when a task matches

~2.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from octanejs/octane at commit 40fdefd, republished under its MIT licence (© octanejs). 695 words, ~2,187 tokens.

name

table-state

description

Read, select, subscribe to, and control React Table V9 state with useTable selectors, table.state, table.Subscribe, table.atoms, table.store, and external TanStack Store atoms. Load for controlled state, render performance, or React Compiler builder-method subscription problems.

metadata.type

framework

metadata.library

@tanstack/react-table

metadata.library_version

9.2.4

metadata.framework

react

requires

@tanstack/table-core#core, getting-started

sources

TanStack/table:docs/framework/react/guide/table-state.md, TanStack/table:docs/framework/react/guide/react-compiler.md…

import {
  rowSelectionFeature,
  tableFeatures,
  useTable,
} from '@tanstack/react-table'

const features = tableFeatures({ rowSelectionFeature })

export function SelectionCount({
  data,
  columns,
}: {
  data: Array<{ id: string }>
  columns: any[]
}) {
  const table = useTable({ features, data, columns }, (state) => ({
    rowSelection: state.rowSelection,
  }))
  return <output>{Object.keys(table.state.rowSelection).length}</output>
}

function SelectedRows({
  table,
}: {
  table: ReturnType<typeof useTable<typeof features, { id: string }>>
}) {
  return (
    <table.Subscribe selector={(state) => state.rowSelection}>
      {(rowSelection) => <output>{Object.keys(rowSelection).length}</output>}
    </table.Subscribe>
  )
}

import { useCreateAtom } from '@tanstack/react-store'

const selection = useCreateAtom<Record<string, boolean>>({})
const table = useTable({
  features,
  columns,
  data,
  atoms: { rowSelection: selection },
})

const [rowSelection, setRowSelection] = useState<Record<string, boolean>>({})
const table = useTable({
  features,
  columns,
  data,
  state: { rowSelection },
  onRowSelectionChange: setRowSelection,
})

table.resetSorting()
table.resetPagination()
table.resetPagination(true) // feature blank/default state

import type { PaginationState, TableState } from '@tanstack/react-table'

type AppTableState = TableState<typeof features>
const initialPagination: PaginationState = { pageIndex: 0, pageSize: 20 }

const count = Object.keys(table.atoms.rowSelection.get()).length

const count = Object.keys(table.state.rowSelection).length

const table = useTable({
  features,
  columns,
  data,
  onRowSelectionChange: setRowSelection,
})

const table = useTable({
  features,
  columns,
  data,
  state: { rowSelection },
  onRowSelectionChange: setRowSelection,
})

function SelectionCell({ row }) {
  return (
    <input
      type="checkbox"
      checked={row.getIsSelected()}
      onChange={row.getToggleSelectedHandler()}
    />
  )
}

import { Subscribe } from '@tanstack/react-table'

function SelectionCell({ row }) {
  return (
    <Subscribe
      source={row.table.atoms.rowSelection}
      selector={(selection) => selection[row.id]}
    >
      {(selected) => (
        <input
          type="checkbox"
          checked={!!selected}
          onChange={row.getToggleSelectedHandler()}
        />
      )}
    </Subscribe>
  )
}

<table.Subscribe source={table.atoms.rowSelection}>
  {() => <Cell cell={cell} />}
</table.Subscribe>

<Cell cell={cell} />

© octanejs, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in packages/tanstack-table/upstream/skills/table-state of octanejs/octane.

Open the folder on GitHubat commit 40fdefd