Headless package

@unsanity/spreadsheet is the published npm package: Zustand store, virtualized grid, formula bar primitive, sheet tabs API, hooks, and bundled CSS.

Provider

Spreadsheet replaces the old SpreadsheetProvider. Static parts: Spreadsheet.Grid, Spreadsheet.FormulaBar, Spreadsheet.SheetTabs.

Hooks

• useUndoRedo — undo / redo
• useSpreadsheetClipboard — cut, copy, paste
• useSpreadsheetView — formula bar, gridlines, freeze
• useSpreadsheetRowActions / useSpreadsheetColumnActions
• useSelectionFormatState — cell formatting from selection
• usePersistenceActions — document new/open/save
• useSpreadsheetImport — CSV/TSV import
• useSpreadsheetSheetTabs — sheet list CRUD

Styling

import "@unsanity/spreadsheet/styles.css";

Grid and formula bar use monospace in bundled CSS. Theme via shadcn CSS variables and optional data-* attributes on cells and headers.