Svelte Spreadsheet

A functional spreadsheet application built with SvelteKit, featuring formula support, data persistence, and a clean Google Sheets-like interface.

Features

• ✅ Grid-based interface with rows and columns
• ✅ Cell editing with inline editing
• ✅ Formula support (SUM, AVERAGE, arithmetic)
• ✅ Auto-save to localStorage
• ✅ Import/Export JSON data
• ✅ Keyboard shortcuts
• ✅ Responsive design

Quick Start

npm install
npm run dev

Open http://localhost:5173 in your browser.

Usage

• Click "Sample" to load example data
• Double-click cells to edit
• Start formulas with = (e.g., =SUM(A1:A5))
• Use arrow keys to navigate
• Press Ctrl+S to save manually

Build

npm run build
npm run preview