API Reference Overview

Welcome to the HyperFormula v3.5.0 API!

The API reference documentation provides detailed information for methods, error types, event types, and all the configuration options available in HyperFormula.

Current build: 30/10/2026 04:31:06

API reference index

The following sections explain shortly what can be found in the left sidebar navigation menu.

HyperFormula

This section contains information about the class for creating HyperFormula instance. It enlists all available public methods alongside their descriptions, parameter types, and examples.

The snippet shows an example how to use buildFromArray which is one of three static methods for creating an instance of HyperFormula:

const sheetData = [
  ['0', '=SUM(1, 2, 3)', '52'],
  ['=SUM(A1:C1)', '', '=A1'],
  ['2', '=SUM(A1:C1)', '91'],
];

const hfInstance = HyperFormula.buildFromArray(sheetData, options);

ConfigParams

This section contains information about options that allow you to configure the instance of HyperFormula.

An example set of options:

const options = {
  licenseKey: 'gpl-v3',
  nullDate: { year: 1900, month: 1, day: 1 },
  functionArgSeparator: '.'
};

Listeners

In this section, you can find information about all events you can subscribe to.

For example, subscribing to sheetAdded event:

const hfInstance = HyperFormula.buildFromSheets({
  MySheet1: [ ['1'] ],
  MySheet2: [ ['10'] ],
}, { licenseKey: 'gpl-v3' });

const handler = ( ) => { console.log('baz') }

hfInstance.on('sheetAdded', handler);

const nameProvided = hfInstance.addSheet('MySheet3');