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virtuoso-devvirtuoso-dev/skills/data-table/SKILL.md

data-table

Skill1 starsChanged 44 days agoMITView on GitHub

Build virtualized data tables with @virtuoso.dev/data-table. Use this skill when (1) building a data grid with sorting, filtering, or grouped rows, (2) installing the shadcn-styled or headless table, (3) connecting remote/paginated data sources, (4) adding sticky, resizable, reorderable, or hideable columns, (5) persisting table state, (6) controlling a table from outside (scrolling, actions), (7) migrating from TableVirtuoso, or any task involving VirtuosoDataTable, DataTable, DataTableColumn, localModel, remoteModel, or engine refs like scrollToRow$ and dispatchModelAction$.

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    Word for word · 1

    1. petyosi/react-virtuoso★ 6.5k100% same

    Edited · 0

    None found.

    Wrote their own version · 2

    1. metadist/synaplan-desktop★ 257same name
    2. vobase/vobase★ 60same name

    How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.

  • In this repository3 other files it gives its agents.

The file

We split this skill into the rules it gives an agent

10 rules. About 0 are common, 2 are distinctive, and 8 are very specific to this project.

  • ≈0

    Common · estimate

    Many files like this have a rule of this kind.

  • ≈2

    Distinctive · estimate

    This author's own choices. Worth a look.

  • 8

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Very specific:

    Import the structural styles (@import '@virtuoso.dev/data-table/styles.css') and use the unstyled VirtuosoDataTable, Column, ColumnHeader, …

    line 39
  2. Very specific:

    Use DataTableColumnHeader.className for the intrinsic surface: fixed or minimum base width, padding, typography, and alignment within that …

    line 85
  3. Very specific:

    Use DataTableColumnHeader.containerProps for paint and interaction across the rendered column: background, hover/focus state, outline, box …

    line 86
  4. Very specific:

    Do not use width, flex, margin, padding, border, display, or justify-* styles in containerProps.

    line 87
  5. Very specific:

    Do not use w-full or flex growth on className to paint the full rendered track.

    line 99
  6. Distinctive:

    When building a table, choose fixed vs growing columns from the data being displayed:

    line 101
  7. Very specific:

    Keep compact columns fixed by omitting grow: ids, slugs, checkboxes, action menus, icon buttons, status labels, badges, versions, counts, …

    line 103
  8. Very specific:

    Use positive finite grow values.

    line 105
  9. Very specific:

    Do not make every column grow.

    line 107
  10. Distinctive:

    Before shipping a shadcn table, grep for width utilities on cells and move them to headers:

    line 215

≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

@virtuoso.dev/data-table

A virtualized React data table (rows and columns) with grouped rows, sticky columns, column resizing/reordering/visibility, state persistence, and remote data support. It is the successor to TableVirtuoso for table-shaped problems: instead of row renderers, you pass a data source (model) and declare columns as JSX.

Installation: two paths

Shadcn (pre-styled wrapper) — for projects using shadcn/ui conventions:

npx shadcn@latest add petyosi/react-virtuoso/data-table

This installs a styled wrapper at @/components/ui/data-table exporting DataTable, DataTableColumn, DataTableColumnHeader, DataTableCell. Optional feature UI parts are separate registry items:

npx shadcn@latest add petyosi/react-virtuoso/data-table-resize-handle
npx shadcn@latest add petyosi/react-virtuoso/data-table-sort-header-button

The registry item names are hyphenated. The installed imports remain nested (@/components/ui/data-table/column-resize, @/components/ui/data-table/column-sort). Do not run path-shaped shadcn commands such as data-table/column-resize or data-table/column-sort; shadcn resolves registry item names, not import paths.

Headless — for custom design systems:

npm install @virtuoso.dev/data-table

Import the structural styles (@import '@virtuoso.dev/data-table/styles.css') and use the unstyled VirtuosoDataTable, Column, ColumnHeader, Cell. Ask which path fits the project before installing; the shadcn wrapper is the faster start in Tailwind/shadcn codebases.

Minimal example (shadcn wrapper)

import { DataTable, DataTableCell, DataTableColumn, DataTableColumnHeader } from '@/components/ui/data-table'
import { localModel } from '@virtuoso.dev/data-table'

const model = localModel({ data: products })

export default function App() {
  return (
    <DataTable model={model} style={{ height: 360 }}>
      <DataTableColumn field="name">
        <DataTableColumnHeader>Product</DataTableColumnHeader>
        <DataTableCell className="font-medium">{({ cellValue }) => String(cellValue)}</DataTableCell>
      </DataTableColumn>
    </DataTable>
  )
}

Columns are JSX, not config objects. field is both the row-data lookup key and the column's public identifier (used by visibility, reordering, persistence). The table needs a real height, like every Virtuoso component.

Treat field and id as stable column identities, not as user-facing labels. Add an explicit DataTableColumnHeader for every visible column. This is especially important for display-only columns such as actions: use a visible label like Actions unless the product intentionally wants an icon-only/headerless column, in which case use sr-only text for accessibility.

When a table should fill the remaining height in a page, panel, or card, use a measured flex column instead of a fixed pixel height. Every flex ancestor between the measured container and the table needs min-h-0; non-table chrome should be shrink-0; the table should be the growing child with style={{ height: '100%' }}:

<section className="flex h-full min-h-0 flex-col">
  <PageHeader className="shrink-0" />
  <div className="flex min-h-0 flex-1 flex-col gap-3">
    <Toolbar className="shrink-0" />
    <DataTable className="min-h-0 flex-1" model={model} style={{ height: '100%' }}>
      {/* columns */}
    </DataTable>
  </div>
</section>

This is optional. If the parent does not have a definite height, keep using a fixed height (style={{ height: 360 }}) or choose useWindowScroll / customScrollParent deliberately.

Column widths are owned by the table through header measurements. Put base width classes such as w-*, min-w-*, and basis-* on DataTableColumnHeader, not on DataTableCell. Cells render inside tracks sized from header measurements; cell width utilities can force body content outside those tracks and make columns overlap at narrow widths. Use cell className for typography, alignment, padding, truncation, and color. For complex cell content, put min-w-0 on an inner wrapper instead of widening the cell.

A growing header has separate measurement and presentation surfaces. The table measures the intrinsic header first, then adds spare width according to grow. If that same measured element stretches across the rendered column, ResizeObserver reports the grown width as the next base width and the column cannot shrink when its viewport narrows.

  • Use DataTableColumnHeader.className for the intrinsic surface: fixed or minimum base width, padding, typography, and alignment within that base width.
  • Use DataTableColumnHeader.containerProps for paint and interaction across the rendered column: background, hover/focus state, outline, box shadow, cursor, ARIA attributes, and event handlers.
  • Do not use width, flex, margin, padding, border, display, or justify-* styles in containerProps. The table owns the outer geometry; layout styles there can clip content and move HeaderEnd or HeaderEdge slots. Use box-shadow or outline for full-width separators.
  • Events on containerProps receive bubbled events from sort buttons, resize handles, reorder controls, and other nested UI. Stop propagation in the nested control or guard the container handler before running a whole-header action.
<DataTableColumn field="name" grow={1}>
  <DataTableColumnHeader className="min-w-72" containerProps={{ className: 'cursor-pointer hover:bg-muted/50 focus-within:outline' }}>
    Name
  </DataTableColumnHeader>
  <DataTableCell>{NameCell}</DataTableCell>
</DataTableColumn>

Do not use w-full or flex growth on className to paint the full rendered track. Those styles resolve inside the intrinsic measurement boundary by design; put the full-width visual on containerProps. Use HeaderEnd for a control that must align to the rendered column edge.

When building a table, choose fixed vs growing columns from the data being displayed:

  • Keep compact columns fixed by omitting grow: ids, slugs, checkboxes, action menus, icon buttons, status labels, badges, versions, counts, dates, timestamps, and short enum or metadata columns.
  • Mark text-heavy columns as growing with DataTableColumn grow={number}: names, titles, descriptions, summaries, messages, notes, paths, and other content where extra horizontal space improves scanning or reduces truncation.
  • Use positive finite grow values. grow={0} is equivalent to omitting grow; prefer omission for fixed columns unless a generated config shape needs an explicit value.
  • Ground the choice in local understanding of the table. A name column often grows, but a short code-like name may be fixed; a label column is often fixed, but user-authored labels may grow.
  • Do not make every column grow. grow protects compact columns from absorbing leftover space while useful text columns take the room.

Example:

<DataTableColumn field="name" grow={1}>
  <DataTableColumnHeader className="min-w-72">Name</DataTableColumnHeader>
  <DataTableCell>{NameCell}</DataTableCell>
</DataTableColumn>

<DataTableColumn field="description" grow={3}>
  <DataTableColumnHeader className="min-w-80">Description</DataTableColumnHeader>
  <DataTableCell>{DescriptionCell}</DataTableCell>
</DataTableColumn>

<DataTableColumn id="actions">
  <DataTableColumnHeader className="w-16 justify-center">Actions</DataTableColumnHeader>
  <DataTableCell>{ActionsCell}</DataTableCell>
</DataTableColumn>

Choosing a data model

SituationModel
Rows in memory; filter/sort/group client-sidelocalModel({ data, pipeline?, actions?, groups? })
API-backed, known total count (placeholder rows while fetching)remoteModel with offset mode (defaultOffsetViewportHandler); fetch returns { rows, totalCount }
API-backed, cursor pagination / infinite appendremoteModel with append mode (defaultAppendViewportHandler); fetch returns { rows }

Hold the model in useState with lazy init — const [model] = useState(() => localModel({ data })). Do not use useMemo; React may discard memoized values, and the model instance must be retained. Module scope is fine for a static singleton table.

Local filtering/sorting/grouping runs through a named-stage pipeline: declare pipeline: ['filter', 'sort'] plus actions, then dispatch with model.send({ action: 'filter', payload }). See local-data-model and the local-filter-sort-group example.

For remote sorting/filtering/search controls, keep the action payload in the model rather than mirroring it in React state. Seed defaults with initialActions, dispatch changes with model.send() or dispatchModelAction$, and read modelActionState$ to paint active controls. This is especially important when modelStatePersistenceAdapter() restores saved action state.

Provide computeRowKey={({ data }) => data.id} whenever rows can reorder (sort, filter, remote updates) — without it rows remount and lose local state.

Column features

  • Sticky columns: <DataTableColumn field="name" sticky="left" /> (or "right"); multiple sticky columns stack.
  • Visibility: declaratively via visible={false}, or at runtime through setColumnVisibility$ / columnVisibilityState$ from @virtuoso.dev/data-table/column-visibility.
  • Resizing: mount ResizeHandle in the HeaderEdge slot; programmatic via resizeColumn$ from @virtuoso.dev/data-table/column-resize.
  • Reordering: ReorderGrip in HeaderStart + ReorderDropZone in HeaderOverlay; programmatic via reorderColumns$ from @virtuoso.dev/data-table/column-reorder.
  • Header slots: HeaderStart (before label), HeaderEnd (after label), HeaderEdge (pinned to the column boundary), HeaderOverlay (covers the header) — see header-slots.
  • Grouped rows: pass groups: [{ index, level }] alongside data and render headers with GroupHeaderCell — see grouped-rows.

State persistence: mount <DataTableStatePersistence adapters={[...]} storageKey="my-table" /> with adapters from the feature subpaths (columnVisibilityPersistenceAdapter(), columnOrderPersistenceAdapter(), columnWidthPersistenceAdapter(), modelStatePersistenceAdapter()). See state-persistence.

Controlling the table from outside

The table's state lives in an internal reactive engine, and the package intentionally exports cells (readable state, $-suffixed) and streams (actions) for remote control — state is not lifted into props:

import { scrollLocation$, scrollToRow$, useEngineRef, useRemoteCellValue, useRemotePublisher } from '@virtuoso.dev/data-table'

const engineRef = useEngineRef()
const scrollToRow = useRemotePublisher(scrollToRow$, engineRef)
const location = useRemoteCellValue(scrollLocation$, engineRef)

<DataTable engineRef={engineRef} model={model}>...</DataTable>
<button onClick={() => scrollToRow({ index: 100, align: 'start' })}>Go to row 100</button>

For UI far from the table, pass engineId="orders-table" and use the same hooks with the string id. Useful nodes: scrollToRow$, scrollIntoView$, setColumnVisibility$, dispatchModelAction$ (actions); scrollLocation$, columns$, columnVisibilityState$, modelActionState$, loadingState$ (state). See controlling-the-table.

Customization

  • Styling goes through className on the wrapper components and semantic data attributes — never use data-testid as a styling hook.
  • For column headers, use className for intrinsic sizing and content layout, and containerProps for paint and interaction across the rendered column. Keep layout-changing styles off containerProps.
  • The shadcn wrapper already renders the app-level table frame (rounded-md border) on DataTable. Do not add rounded-md border at each table instance; use className only for intentional frame overrides such as rounded-xl, border-0, border-2, shadows, or table variable overrides.
  • The shadcn wrapper exposes table-level CSS variables (--data-table-bg, --data-table-fg, --data-table-border, --data-table-muted, --data-table-muted-fg, --data-table-row-hover, --data-table-sticky-hover) and uses them for sticky headers, sticky columns, rows, and loading surfaces. When adapting to a host design system, override those variables once on DataTable or in the copied wrapper defaults instead of styling sticky cells individually.
  • Replace internals via the components prop: Row, StickyColumnContainer, LoadingPlaceholder, LoadingOverlay, LoadingFooter (component overrides must forward refs). Top-level: EmptyPlaceholder, ScrollElement.
  • context={{ ... }} flows to computeRowKey, EmptyPlaceholder, loading slots, and component overrides — but not to cell/header renderers (use React context there). See ambient-context.
  • Scroll modes: default internal scroller, useWindowScroll, or customScrollParent — pick exactly one.

Migrating from TableVirtuoso

TableVirtuosodata-table
data arraylocalModel({ data }) passed as model
itemContentDataTableColumn + DataTableCell
fixedHeaderContentDataTableColumnHeader
grouped rowsgroups + GroupHeaderCell
fixed columns (CSS)sticky="left" / sticky="right"
ref + scrollToIndexengineRef + scrollToRow$
rangeChangedonRenderedDataChange, viewportRange$, scrollLocation$

Full guide: migrating-from-table-virtuoso.

Troubleshooting

SymptomFix
Blank table or header onlyGive the table a measurable height
Table does not fill its panelUse the optional flex-height pattern: measured parent, min-h-0 ancestors, shrink-0 chrome, DataTable as flex-1 with height: '100%'
Shadcn component imports failRun the registry install, or import headless from @virtuoso.dev/data-table
Shadcn creates a literal @/ directoryMake the alias resolvable from the root config shadcn reads; with solution-style tsconfigs, mirror @/* paths in root tsconfig.json
Page and table both scrollUse only one scroll mode
Remote rows never appearReturn the right fetch shape ({ rows, totalCount } for offset mode) and pass the signal through
Rows remount / lose state after sortingAdd computeRowKey
Body cells overlap columnsMove width classes from DataTableCell to DataTableColumnHeader; use DataTableColumn grow={...} for extra width
Full-width header styles clip contentKeep layout on header className; use containerProps only for paint and interaction, without padding, borders, width, flex, or alignment
Action/display column has no headerAdd an explicit visible DataTableColumnHeader label, e.g. Actions; field/id is an identity, not a UI label
Double outer border/frameRemove call-site rounded-md border; the shadcn wrapper already owns the default table frame
Sticky/header colors don't match bodyOverride the shadcn wrapper's --data-table-* variables on DataTable or in the copied wrapper defaults
Sticky columns clippedCheck parent overflow and header min-widths
Empty cells flash on horizontal scrollRaise columnOverscanCount

Before shipping a shadcn table, grep for width utilities on cells and move them to headers:

rg 'DataTableCell.*className=.*(w-|min-w|max-w|basis-|grow|shrink|flex-(none|auto|initial|1|\[))'

For tests, wrap in VirtuosoDataTableTestingContext.Provider value={{ itemHeight, viewportHeight }} (JSDOM has no layout) and assert behavior, not exact DOM row counts — overscan renders extra rows. Use real-browser tests for sticky columns, resizing, and drag interactions. See testing.

References

  • references/README.md — overview
  • references/1.installation/ — shadcn, headless
  • references/2.data-model/ — local, remote, row-keys
  • references/3.columns/ — defining-columns, cell-and-header-renderers, column-groups, sticky-columns, visibility, resizing, reordering, runtime-columns, column-layout
  • Features: grouped-rows, state-persistence, controlling-the-table
  • references/7.customization/ — styling, replacing-internals, empty-and-loading-states, scroll-containers, ambient-context, header-slots, shadcn-wrapper
  • references/8.examples/ — worked examples from basic table to remote pagination, dashboards, and persistence
  • references/9.guides/ — testing, performance, troubleshooting, migrating-from-table-virtuoso, debug-instrumentation

Full API reference: https://virtuoso.dev/data-table/

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