lytenyte-grid

name	lytenyte-grid
description	Use this skill when the user is working with LyteNyte Grid (@1771technologies/lytenyte-pro or @1771technologies/lytenyte-core), a headless React data grid. Activate for tasks like: installing or licensing LyteNyte Grid, configuring columns or rows, building cell renderers or editors, adding filters or sort controls, grouping or aggregating rows, pivoting, exporting to CSV/Excel/Parquet/Arrow, row selection, cell range selection, theming or styling, TypeScript GridSpec patterns, server-side or tree data, and any PRO component (SmartSelect, PillManager, Menu, Dialog, TreeView, RowGroupCell). Also activate when the user describes grid problems without naming the package — e.g. "my rows won't group", "cells aren't editable", "add a loading overlay", "pin this column", "the filter isn't working", "how do I export this table", "select a range of cells", "copy cells to clipboard", "build me a grid".
compatibility	React 18+. Designed for Claude Code and similar AI coding agents.
metadata	{"author":"1771 Technologies","docs":"https://www.1771technologies.com/docs"}

A React Data Grid with advanced features like sorting, filtering, column pinning, cell selection, row selection, server data loading, infinite data loading, row grouping and aggregations, pivoting, and many more features.

LyteNyte Grid is a headless or pre-styled React data grid with two editions:

• Core — @1771technologies/lytenyte-core (Apache 2.0, free, no license required)
• PRO — @1771technologies/lytenyte-pro (commercial, superset of Core)

PRO licensing: PRO can be installed and used freely for evaluation — no license key is needed to try it. A watermark ("used for evaluation") appears when no key is set.

Operating Rules

• First determine whether the user is using Core or PRO. If unclear, default examples to PRO only when the requested feature requires PRO; otherwise use Core-compatible APIs.
• Load only the relevant reference files from the table below. Do not load every reference upfront.
• Prefer LyteNyte APIs and terminology. Do not substitute AG Grid, TanStack Table, MUI DataGrid, or generic grid APIs unless explicitly comparing.
• For React examples, provide complete TypeScript snippets with imports, GridSpec, data source setup, columns state, CSS import, and a sized grid container.
• Always include the relevant CSS import and a wrapper with an explicit height.
• When debugging, check these first: package edition, CSS import, container height, column IDs, controlled state handlers, data source type, and whether the feature is Core or PRO.

A license key is required to remove the watermark for production deployments. License validation is offline; no network request is made. If the user is building/prototyping and hasn't set up a license yet, that is fine — they can add it before shipping.

Quick Start

1. Start by importing LyteNyte Grid and its associated CSS file.

   import { Grid, useClientDataSource } from "@1771technologies/lytenyte-pro";
   import "@1771technologies/lytenyte-pro/grid-full.css";
   

   If you are using LyteNyte Grid Core:

   import { Grid, useClientDataSource } from "@1771technologies/lytenyte-core";
   import "@1771technologies/lytenyte-core/grid-full.css";
   

2. Create a Grid Spec type to provide the grid with types for the data that will be displayed in LyteNyte Grid.

   interface GridSpec {
     readonly data: { name: string; price: number };
   }
   

3. Create a component that renders LyteNyte Grid using the Grid component exported from the LyteNyte package.

   function MyGrid() {
     const ds = useClientDataSource({ data: myData });
   
     const [columns, setColumns] = useState<Grid.Column<GridSpec>[]>([
       { id: "name", name: "Name" },
       { id: "price", name: "Price", type: "number" },
     ]);
   
     return (
       <div className="ln-light ln-grid" style={{ height: 500 }}>
         <Grid<GridSpec> rowSource={ds} columns={columns} onColumnsChange={setColumns} rowHeight={40} />
       </div>
     );
   }
   

   Here we define the columns in the component as well. LyteNyte Grid columns require at a minimum an id property, which must be unique among all the columns. See the Columns Ref for more details.

Load References On Demand

Read a reference file only when the task requires it. Do not load all files upfront.

When the task involves…	Load this file
Installing, licensing, CSS imports, CDN, watermark errors	refs/installation.md
Grid setup, container sizing, reactivity, API ref, apiExtension, usePiece, headless mode, events system (cell/row/viewport events)	refs/grid-core.md
TypeScript, GridSpec, renderer types, RowNode type guards	refs/typescript.md
Columns — id/name/field, sizing, pinning, groups, header renderers, spanning	refs/columns.md
Rows — height, master-detail (row detail), full-width rows, row spanning, row drag	refs/rows.md
Row selection — checkboxes, SelectAll, linked vs isolated, controlled state	refs/row-selection.md
Client-side data — useClientDataSource, sort, filter, group, aggregation, pivot, add/delete rows	refs/client-data-source.md
Server-side data — useServerDataSource, DataRequest/DataResponse, loading state, refresh	refs/server-data-source.md
Tree data — useTreeDataSource, nested objects, rowRootFn/rowChildrenFn	refs/tree-data-source.md
Infinite scroll or pagination on server data	refs/infinite-paginated-source.md
Cell renderers, tooltips, diff flashing, virtualization warning, cell range selection (cellSelectionMode, cellSelections, multi-range, clipboard)	refs/cells.md
Cell editing — edit mode, validators, edit renderers, bulk edit	refs/cell-editing.md
Filtering — text, number, date, set, quick search filter patterns	refs/filtering.md
Expression DSL — Evaluator, ExpressionEditor, expression filters	refs/expressions.md
Pivoting — pivotMode, PivotModel, measures, grand totals	refs/pivoting.md
Exporting data — CSV, Excel, Parquet, Arrow, clipboard	refs/export.md
UI components — SmartSelect, Menu, Popover, Dialog, PillManager, ColumnManager, TreeView, RowGroupCell, overlays, ViewportShadows	refs/components.md
Theming — pre-built themes, data-ln-* attributes, CSS tokens, Tailwind, CSS Modules, Emotion	refs/theming.md
shadcn/ui — CLI install, ln-shadcn theme, using shadcn components as renderers/editors/filters, dark mode, cn utility	refs/shadcn.md
Keyboard shortcuts, RTL, accessibility, React Compiler, bundling, security, versioning	refs/misc.md

Feature Availability & Reference Routing

Use this file first when deciding:

1. whether the user needs Core or PRO
2. which reference file to load next

Rules

• Use PRO when any requested feature is PRO-only.
• After deciding edition, load the most specific reference file listed below.
• Do not load every reference file.

PRO-Only Features

User asks for	Edition	Load
server-side data, server sorting/filtering/grouping, useServerDataSource	PRO	refs/server-data-source.md
infinite scroll, paginated server rows	PRO	refs/infinite-paginated-source.md
tree data, nested object rows, useTreeDataSource	PRO	refs/tree-data-source.md
pivot tables, pivot mode, measures, grand totals	PRO	refs/pivoting.md
expressions, expression filters, expression editor	PRO	refs/expressions.md
label filters, having filters	PRO	refs/filtering.md
SmartSelect, PillManager, Menu, Dialog, TreeView, ColumnManager, RowGroupCell, SelectAll	PRO	refs/components.md

Core-Compatible Features

User asks for	Edition	Load
install, license, watermark, package manager, CDN	Core/PRO	refs/installation.md
grid setup, reactivity, events, API extensions, headless mode	Core/PRO	refs/grid-core.md
TypeScript, GridSpec, row node types	Core/PRO	refs/typescript.md
columns, sizing, pinning, visibility, groups, headers	Core/PRO	refs/columns.md
row height, row pinning, row drag, full-width rows, master-detail	Core/PRO	refs/rows.md
row selection, checkbox selection, linked/isolated selection	Core/PRO	refs/row-selection.md
client data, sorting, filtering, grouping, aggregation	Core/PRO	refs/client-data-source.md
cell renderers, tooltips, diff flashing, cell/range selection, clipboard	Core/PRO	refs/cells.md
cell editing, validation, editors, bulk edit	Core/PRO	refs/cell-editing.md
text/number/date/set/tree-set filters, quick search	Core/PRO	refs/filtering.md
CSV, Excel, Parquet, Arrow, clipboard export	Core/PRO	refs/export.md
themes, CSS tokens, Tailwind, CSS Modules, Emotion	Core/PRO	refs/theming.md
shadcn/ui setup or ln-shadcn	Core/PRO	refs/shadcn.md
keyboard, accessibility, RTL, React Compiler, bundling, security	Core/PRO	refs/misc.md

Ambiguous User Requests

User says	Interpret as	Load
“advanced filter”	check whether they mean set/tree-set filter or PRO expression/having filter	refs/filtering.md, maybe refs/expressions.md
“tree”	could mean TreeView component or tree data	refs/components.md or refs/tree-data-source.md
“grouping”	usually client row grouping unless server-side data is mentioned	refs/client-data-source.md
“pagination”	usually server paginated rows	refs/infinite-paginated-source.md
“context menu”	prebuilt Menu component	refs/components.md
“custom visibility panel”	custom Core implementation or PRO ColumnManager	refs/columns.md, maybe refs/components.md