Skills

tanstack-table

Installation
SKILL.md

Overview

TanStack Table is a headless UI library for building data tables and datagrids. It provides logic for sorting, filtering, pagination, grouping, expanding, column pinning/ordering/visibility/resizing, and row selection - without rendering any markup or styles.

Package: @tanstack/react-table Utilities: @tanstack/match-sorter-utils (fuzzy filtering) Current Version: v8

Installation

npm install @tanstack/react-table

Core Architecture

Building Blocks

  1. Column Definitions - describe columns (data access, rendering, features)
  2. Table Instance - central coordinator with state and APIs
  3. Row Models - data processing pipeline (filter -> sort -> group -> paginate)
  4. Headers, Rows, Cells - renderable units

Critical: Data & Column Stability

// WRONG - new references every render, causes infinite loops
const table = useReactTable({
  data: fetchedData.results,     // new ref!
  columns: [{ accessorKey: 'name' }], // new ref!
})

// CORRECT - stable references
const columns = useMemo(() => [...], [])
const data = useMemo(() => fetchedData?.results ?? [], [fetchedData])

const table = useReactTable({ data, columns, getCoreRowModel: getCoreRowModel() })

Column Definitions

Using createColumnHelper (Recommended)

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

type Person = {
  firstName: string
  lastName: string
  age: number
  status: 'active' | 'inactive'
}

const columnHelper = createColumnHelper<Person>()

const columns = [
  // Accessor column (data column)
  columnHelper.accessor('firstName', {
    header: 'First Name',
    cell: info => info.getValue(),
    footer: info => info.column.id,
  }),

  // Accessor with function
  columnHelper.accessor(row => row.lastName, {
    id: 'lastName', // required with accessorFn
    header: () => <span>Last Name</span>,
    cell: info => <i>{info.getValue()}</i>,
  }),

  // Display column (no data, custom rendering)
  columnHelper.display({
    id: 'actions',
    header: 'Actions',
    cell: ({ row }) => (
      <button onClick={() => deleteRow(row.original)}>Delete</button>
    ),
  }),

  // Group column (nested headers)
  columnHelper.group({
    id: 'info',
    header: 'Info',
    columns: [
      columnHelper.accessor('age', { header: 'Age' }),
      columnHelper.accessor('status', { header: 'Status' }),
    ],
  }),
]

Column Options

Option Type Description
id string Unique identifier (auto-derived from accessorKey)
accessorKey string Dot-notation path to row data
accessorFn (row) => any Custom accessor function
header string | (context) => ReactNode Header renderer
cell (context) => ReactNode Cell renderer
footer (context) => ReactNode Footer renderer
size number Default width (default: 150)
minSize number Min width (default: 20)
maxSize number Max width
enableSorting boolean Enable sorting
sortingFn string | SortingFn Sort function
enableFiltering boolean Enable filtering
filterFn string | FilterFn Filter function
enableGrouping boolean Enable grouping
aggregationFn string | AggregationFn Aggregation function
enableHiding boolean Enable visibility toggle
enableResizing boolean Enable resizing
enablePinning boolean Enable pinning
meta any Custom metadata

Table Instance

Creating a Table

import {
  useReactTable,
  getCoreRowModel,
  getSortedRowModel,
  getFilteredRowModel,
  getPaginationRowModel,
  flexRender,
} from '@tanstack/react-table'

function MyTable() {
  const [sorting, setSorting] = useState<SortingState>([])
  const [columnFilters, setColumnFilters] = useState<ColumnFiltersState>([])
  const [pagination, setPagination] = useState<PaginationState>({
    pageIndex: 0,
    pageSize: 10,
  })

  const table = useReactTable({
    data,
    columns,
    state: { sorting, columnFilters, pagination },
    onSortingChange: setSorting,
    onColumnFiltersChange: setColumnFilters,
    onPaginationChange: setPagination,
    getCoreRowModel: getCoreRowModel(),
    getSortedRowModel: getSortedRowModel(),
    getFilteredRowModel: getFilteredRowModel(),
    getPaginationRowModel: getPaginationRowModel(),
  })

  return (
    <table>
      <thead>
        {table.getHeaderGroups().map(headerGroup => (
          <tr key={headerGroup.id}>
            {headerGroup.headers.map(header => (
              <th key={header.id} onClick={header.column.getToggleSortingHandler()}>
                {header.isPlaceholder ? null :
                  flexRender(header.column.columnDef.header, header.getContext())}
                {{ asc: ' ↑', desc: ' ↓' }[header.column.getIsSorted() as string] ?? null}
              </th>
            ))}
          </tr>
        ))}
      </thead>
      <tbody>
        {table.getRowModel().rows.map(row => (
          <tr key={row.id}>
            {row.getVisibleCells().map(cell => (
              <td key={cell.id}>
                {flexRender(cell.column.columnDef.cell, cell.getContext())}
              </td>
            ))}
          </tr>
        ))}
      </tbody>
    </table>
  )
}

Sorting

const table = useReactTable({
  state: { sorting },
  onSortingChange: setSorting,
  getSortedRowModel: getSortedRowModel(),
  enableSorting: true,
  enableMultiSort: true,
  // manualSorting: true,  // For server-side sorting
});

// Built-in sort functions: 'alphanumeric', 'text', 'datetime', 'basic'
// Column-level: sortingFn: 'alphanumeric'

Filtering

Column Filtering

const table = useReactTable({
  state: { columnFilters },
  onColumnFiltersChange: setColumnFilters,
  getFilteredRowModel: getFilteredRowModel(),
  getFacetedRowModel: getFacetedRowModel(),
  getFacetedUniqueValues: getFacetedUniqueValues(),
  getFacetedMinMaxValues: getFacetedMinMaxValues(),
})

// Built-in: 'includesString', 'equalsString', 'arrIncludes', 'inNumberRange', etc.

// Filter UI
function Filter({ column }) {
  return (
    <input
      value={(column.getFilterValue() ?? '') as string}
      onChange={e => column.setFilterValue(e.target.value)}
      placeholder={`Filter... (${column.getFacetedUniqueValues()?.size})`}
    />
  )
}

Global Filtering

const [globalFilter, setGlobalFilter] = useState("");

const table = useReactTable({
  state: { globalFilter },
  onGlobalFilterChange: setGlobalFilter,
  globalFilterFn: "includesString",
  getFilteredRowModel: getFilteredRowModel(),
});

Fuzzy Filtering

import { rankItem } from "@tanstack/match-sorter-utils";

const fuzzyFilter: FilterFn<any> = (row, columnId, value, addMeta) => {
  const itemRank = rankItem(row.getValue(columnId), value);
  addMeta({ itemRank });
  return itemRank.passed;
};

const table = useReactTable({
  filterFns: { fuzzy: fuzzyFilter },
  globalFilterFn: "fuzzy",
});

Pagination

const table = useReactTable({
  state: { pagination },
  onPaginationChange: setPagination,
  getPaginationRowModel: getPaginationRowModel(),
  // For server-side:
  // manualPagination: true,
  // pageCount: serverPageCount,
});

// Navigation
table.nextPage();
table.previousPage();
table.firstPage();
table.lastPage();
table.setPageSize(20);
table.getCanNextPage(); // boolean
table.getCanPreviousPage(); // boolean
table.getPageCount(); // total pages

Row Selection

const [rowSelection, setRowSelection] = useState<RowSelectionState>({})

const table = useReactTable({
  state: { rowSelection },
  onRowSelectionChange: setRowSelection,
  enableRowSelection: true,
  enableMultiRowSelection: true,
})

// Checkbox column
columnHelper.display({
  id: 'select',
  header: ({ table }) => (
    <input
      type="checkbox"
      checked={table.getIsAllRowsSelected()}
      onChange={table.getToggleAllRowsSelectedHandler()}
    />
  ),
  cell: ({ row }) => (
    <input
      type="checkbox"
      checked={row.getIsSelected()}
      disabled={!row.getCanSelect()}
      onChange={row.getToggleSelectedHandler()}
    />
  ),
})

// Get selected rows
table.getSelectedRowModel().rows

Column Visibility

const [columnVisibility, setColumnVisibility] = useState<VisibilityState>({})

const table = useReactTable({
  state: { columnVisibility },
  onColumnVisibilityChange: setColumnVisibility,
})

// Toggle UI
{table.getAllLeafColumns().map(column => (
  <label key={column.id}>
    <input
      type="checkbox"
      checked={column.getIsVisible()}
      onChange={column.getToggleVisibilityHandler()}
    />
    {column.id}
  </label>
))}

Column Pinning

const [columnPinning, setColumnPinning] = useState<ColumnPinningState>({
  left: ["select", "name"],
  right: ["actions"],
});

const table = useReactTable({
  state: { columnPinning },
  onColumnPinningChange: setColumnPinning,
  enableColumnPinning: true,
});

// Render pinned sections separately
row.getLeftVisibleCells(); // Left-pinned
row.getCenterVisibleCells(); // Unpinned
row.getRightVisibleCells(); // Right-pinned

Column Resizing

const table = useReactTable({
  enableColumnResizing: true,
  columnResizeMode: 'onChange', // 'onChange' | 'onEnd'
  defaultColumn: { size: 150, minSize: 50, maxSize: 500 },
})

// Resize handle in header
<div
  onMouseDown={header.getResizeHandler()}
  onTouchStart={header.getResizeHandler()}
  className={`resizer ${header.column.getIsResizing() ? 'isResizing' : ''}`}
/>

Grouping & Aggregation

const [grouping, setGrouping] = useState<GroupingState>([]);

const table = useReactTable({
  state: { grouping },
  onGroupingChange: setGrouping,
  getGroupedRowModel: getGroupedRowModel(),
  getExpandedRowModel: getExpandedRowModel(),
});

// Built-in aggregation: 'sum', 'min', 'max', 'mean', 'median', 'count', 'unique', 'uniqueCount'
columnHelper.accessor("amount", {
  aggregationFn: "sum",
  aggregatedCell: ({ getValue }) => `Total: ${getValue()}`,
});

Row Expanding

const [expanded, setExpanded] = useState<ExpandedState>({})

const table = useReactTable({
  state: { expanded },
  onExpandedChange: setExpanded,
  getExpandedRowModel: getExpandedRowModel(),
  getSubRows: (row) => row.subRows, // For hierarchical data
})

// Expand toggle
<button onClick={row.getToggleExpandedHandler()}>
  {row.getIsExpanded() ? '−' : '+'}
</button>

// Detail row pattern
{row.getIsExpanded() && (
  <tr>
    <td colSpan={columns.length}>
      <DetailComponent data={row.original} />
    </td>
  </tr>
)}

Virtualization Integration

import { useVirtualizer } from '@tanstack/react-virtual'

function VirtualizedTable() {
  const table = useReactTable({ /* ... */ })
  const { rows } = table.getRowModel()
  const parentRef = useRef<HTMLDivElement>(null)

  const virtualizer = useVirtualizer({
    count: rows.length,
    getScrollElement: () => parentRef.current,
    estimateSize: () => 35,
    overscan: 10,
  })

  return (
    <div ref={parentRef} style={{ height: '600px', overflow: 'auto' }}>
      <table>
        <tbody style={{ height: `${virtualizer.getTotalSize()}px`, position: 'relative' }}>
          {virtualizer.getVirtualItems().map(virtualRow => {
            const row = rows[virtualRow.index]
            return (
              <tr
                key={row.id}
                style={{
                  position: 'absolute',
                  transform: `translateY(${virtualRow.start}px)`,
                  height: `${virtualRow.size}px`,
                }}
              >
                {row.getVisibleCells().map(cell => (
                  <td key={cell.id}>
                    {flexRender(cell.column.columnDef.cell, cell.getContext())}
                  </td>
                ))}
              </tr>
            )
          })}
        </tbody>
      </table>
    </div>
  )
}

Server-Side Operations

const table = useReactTable({
  data: serverData,
  columns,
  manualSorting: true,
  manualFiltering: true,
  manualPagination: true,
  pageCount: serverPageCount,
  state: { sorting, columnFilters, pagination },
  onSortingChange: setSorting,
  onColumnFiltersChange: setColumnFilters,
  onPaginationChange: setPagination,
  getCoreRowModel: getCoreRowModel(),
  // Do NOT include getSortedRowModel, getFilteredRowModel, getPaginationRowModel
});

// Fetch data based on state
useEffect(() => {
  fetchData({ sorting, filters: columnFilters, pagination });
}, [sorting, columnFilters, pagination]);

TypeScript Patterns

Extending Column Meta

declare module "@tanstack/react-table" {
  interface ColumnMeta<TData extends RowData, TValue> {
    filterVariant?: "text" | "range" | "select";
    align?: "left" | "center" | "right";
  }
}

Custom Filter/Sort Function Registration

declare module "@tanstack/react-table" {
  interface FilterFns {
    fuzzy: FilterFn<unknown>;
  }
  interface SortingFns {
    myCustomSort: SortingFn<unknown>;
  }
}

Editable Cells via Table Meta

declare module "@tanstack/react-table" {
  interface TableMeta<TData extends RowData> {
    updateData: (rowIndex: number, columnId: string, value: unknown) => void;
  }
}

const table = useReactTable({
  meta: {
    updateData: (rowIndex, columnId, value) => {
      setData((old) =>
        old.map((row, i) =>
          i === rowIndex ? { ...row, [columnId]: value } : row,
        ),
      );
    },
  },
});

Key Imports

import {
  createColumnHelper,
  flexRender,
  useReactTable,
  getCoreRowModel,
  getSortedRowModel,
  getFilteredRowModel,
  getPaginationRowModel,
  getGroupedRowModel,
  getExpandedRowModel,
  getFacetedRowModel,
  getFacetedUniqueValues,
  getFacetedMinMaxValues,
} from "@tanstack/react-table";

import type {
  ColumnDef,
  SortingState,
  ColumnFiltersState,
  VisibilityState,
  PaginationState,
  ExpandedState,
  RowSelectionState,
  GroupingState,
  ColumnOrderState,
  ColumnPinningState,
  FilterFn,
  SortingFn,
} from "@tanstack/react-table";

Best Practices

  1. Always memoize data and columns to prevent infinite re-renders
  2. Use flexRender for all header/cell/footer rendering
  3. Use table.getRowModel().rows for final rendered rows (not getCoreRowModel)
  4. Import only needed row models - each adds processing to the pipeline
  5. Use getRowId for stable row keys when data has unique IDs
  6. Use manualX options for server-side operations
  7. Pair controlled state with both state.X and onXChange
  8. Use module augmentation for custom meta, filter fns, sort fns
  9. Use column helper for type-safe column definitions
  10. Set autoResetPageIndex: true when filtering should reset pagination

Common Pitfalls

  • Defining columns inline (creates new ref each render)
  • Forgetting getCoreRowModel() (required for all tables)
  • Using row models without importing them
  • Not providing id when using accessorFn
  • Mixing manualPagination with client-side getPaginationRowModel
  • Forgetting colSpan for grouped headers
  • Not handling header.isPlaceholder for group column spacers
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