README.md

An open-source headless spreadsheet for business web apps

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HyperFormula is a headless spreadsheet built in TypeScript, serving as both a parser and evaluator of spreadsheet formulas. It can be integrated into your browser or utilized as a service with Node.js as your back-end technology.

What HyperFormula can be used for?

HyperFormula doesn't assume any existing user interface, making it a general-purpose library that can be used in various business applications. Here are some examples:

• Custom spreadsheet-like app
• Business logic builder
• Forms and form builder
• Educational app
• Online calculator

Features

• Function syntax compatible with Microsoft Excel and Google Sheets
• High-speed parsing and evaluation of spreadsheet formulas
• A library of ~400 built-in functions
• Support for custom functions
• Support for Node.js
• Support for undo/redo
• Support for CRUD operations
• Support for clipboard
• Support for named expressions
• Support for data sorting
• Support for formula localization with 17 built-in languages
• GPLv3 license
• Maintained by the team that stands behind the Handsontable data grid

Documentation

• Client-side installation
• Server-side installation
• Basic usage
• Configuration options
• List of built-in functions
• API Reference

Integrations

• Integration with React
• Integration with Angular
• Integration with Vue
• Integration with Svelte

Installation and usage

Install the library from npm like so:

npm install hyperformula

Once installed, you can use it to develop applications tailored to your specific business needs. Here, we've used it to craft a form that calculates mortgage payments using the PMT formula.

import { HyperFormula } from 'hyperformula';

// Create a HyperFormula instance
const hf = HyperFormula.buildEmpty({ licenseKey: 'gpl-v3' });

// Add an empty sheet
const sheetName = hf.addSheet('Mortgage Calculator');
const sheetId = hf.getSheetId(sheetName);

// Enter the mortgage parameters
hf.addNamedExpression('AnnualInterestRate', '8%');
hf.addNamedExpression('NumberOfMonths', 360);
hf.addNamedExpression('LoanAmount', 800000);

// Use the PMT function to calculate the monthly payment
hf.setCellContents({ sheet: sheetId, row: 0, col: 0 }, [['Monthly Payment', '=PMT(AnnualInterestRate/12, NumberOfMonths, -LoanAmount)']]);

// Display the result
console.log(`${hf.getCellValue({ sheet: sheetId, row: 0, col: 0 })}: ${hf.getCellValue({ sheet: sheetId, row: 0, col: 1 })}`);

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Contributing

Contributions are welcome, but before you make them, please read the Contributing Guide and accept the Contributor License Agreement.

License

HyperFormula is available under two different licenses: GPLv3 and proprietary. The proprietary license can be purchased by contacting our team at Handsontable.

Copyright (c) Handsoncode