hyperformula

Use this skill when the user works with HyperFormula (HF) — a headless, open-source TypeScript spreadsheet calculation engine. Use it when the user: mentions HyperFormula or HF; wants to integrate Excel-like formulas into a JS/TS app; evaluate formulas programmatically in a browser or Node.js; simulate spreadsheet or Excel calculation behavior server-side; run calculations over data parsed from XLSX files (e.g. via SheetJS) in code; build a pricing engine, financial model, or what-if analysis in code; define custom spreadsheet functions or named expressions outside of a UI context. Do NOT use this skill for: general Excel questions unrelated to HF; general Google Sheets questions; generic spreadsheet formula-syntax questions outside an HF context; formulas used inside Handsontable (use the "handsontable" skill instead).

By handsontable schedule Updated 6/3/2026