hyperformula

Pros of SheetJS

• Broader file format support, including Excel, CSV, and various spreadsheet formats
• More mature project with a larger community and extensive documentation
• Lightweight and efficient, suitable for both browser and Node.js environments

Cons of SheetJS

• Less focus on formula calculation capabilities
• May require additional libraries for advanced spreadsheet functionalities
• Commercial use requires a paid license

Code Comparison

SheetJS

const XLSX = require('xlsx');
const workbook = XLSX.readFile('example.xlsx');
const sheet = workbook.Sheets[workbook.SheetNames[0]];
const data = XLSX.utils.sheet_to_json(sheet);
console.log(data);

HyperFormula

const HyperFormula = require('hyperformula');
const hf = HyperFormula.buildEmpty();
const sheetName = hf.addSheet('Sheet1');
hf.setCellContents({ sheet: sheetName, row: 0, col: 0 }, '=SUM(1,2,3)');
console.log(hf.getCellValue({ sheet: sheetName, row: 0, col: 0 }));

SheetJS focuses on file parsing and generation, while HyperFormula specializes in formula calculation and spreadsheet logic. SheetJS is more versatile for working with various file formats, whereas HyperFormula excels in complex calculations and maintaining spreadsheet state.

Pros of ExcelJS

• More comprehensive Excel file manipulation, including reading, writing, and editing
• Supports a wider range of Excel features, such as styles, formulas, and charts
• Larger community and more frequent updates

Cons of ExcelJS

• Heavier and potentially slower for large datasets
• More complex API, which may require a steeper learning curve
• Primarily focused on Excel file handling, not optimized for in-memory calculations

Code Comparison

ExcelJS:

const workbook = new ExcelJS.Workbook();
const worksheet = workbook.addWorksheet('Sheet1');
worksheet.getCell('A1').value = 'Hello, World!';
await workbook.xlsx.writeFile('example.xlsx');

HyperFormula:

const hf = HyperFormula.buildEmpty();
const sheetId = hf.addSheet('Sheet1');
hf.setCellContents({ sheet: sheetId, row: 0, col: 0 }, 'Hello, World!');
const value = hf.getCellValue({ sheet: sheetId, row: 0, col: 0 });

Summary

ExcelJS is better suited for comprehensive Excel file manipulation, offering a wide range of features and strong community support. HyperFormula, on the other hand, excels in high-performance, in-memory calculations and formula processing. Choose ExcelJS for full-featured Excel file handling, and HyperFormula for efficient spreadsheet-like calculations in web applications.

Pros of formula.js

• Lightweight and focused on Excel-like formula calculations
• Extensive function coverage, including financial and statistical functions
• Easy to integrate into existing JavaScript projects

Cons of formula.js

• Less actively maintained, with fewer recent updates
• Limited to formula calculations, lacking advanced spreadsheet features
• Smaller community and ecosystem compared to HyperFormula

Code Comparison

formula.js:

var result = formulajs.SUM(1, 2, 3, 4);
console.log(result); // Output: 10

HyperFormula:

const hf = HyperFormula.buildEmpty();
const sheetId = hf.addSheet('Sheet1');
hf.setCellContents({ sheet: sheetId, row: 0, col: 0 }, '=SUM(1,2,3,4)');
console.log(hf.getCellValue({ sheet: sheetId, row: 0, col: 0 })); // Output: 10

formula.js provides a more straightforward API for direct formula calculations, while HyperFormula offers a more comprehensive spreadsheet-like environment with cell references and sheet management. HyperFormula's approach is better suited for complex spreadsheet applications, while formula.js excels in simpler formula-based calculations within existing JavaScript projects.