Socket
Socket
Sign inDemoInstall

node-xlsx

Package Overview
Dependencies
0
Maintainers
1
Versions
41
Alerts
File Explorer

Advanced tools

Install Socket

Detect and block malicious and high-risk dependencies

Install

    node-xlsx

NodeJS Excel files parser & builder


Version published
Maintainers
1
Created

Package description

What is node-xlsx?

The node-xlsx package is a powerful tool for parsing and writing Excel files in Node.js. It allows you to read data from Excel files, manipulate it, and write it back to new Excel files. This package supports both .xlsx and .xls formats.

What are node-xlsx's main functionalities?

Reading Excel Files

This feature allows you to read data from an Excel file. The `parse` method reads the file and returns an array of worksheets, each containing an array of rows and columns.

const xlsx = require('node-xlsx');
const workSheetsFromFile = xlsx.parse(`${__dirname}/myFile.xlsx`);
console.log(workSheetsFromFile);

Writing Excel Files

This feature allows you to write data to an Excel file. The `build` method creates a buffer from the data, which can then be written to a file using Node's `fs` module.

const xlsx = require('node-xlsx');
const data = [[1, 2, 3], [4, 5, 6]];
const buffer = xlsx.build([{name: 'mySheetName', data: data}]);
require('fs').writeFileSync('myFile.xlsx', buffer);

Manipulating Excel Data

This feature allows you to manipulate data within an Excel file. You can read the file, modify the data, and then write the updated data back to a new file.

const xlsx = require('node-xlsx');
const workSheetsFromFile = xlsx.parse(`${__dirname}/myFile.xlsx`);
workSheetsFromFile[0].data[0][0] = 'New Value';
const buffer = xlsx.build(workSheetsFromFile);
require('fs').writeFileSync('myFile.xlsx', buffer);

Other packages similar to node-xlsx

Readme

Source

node-xlsx

npm version npm total downloads npm monthly downloads npm license build status

Features

Straightforward excel file parser and builder.

  • Relies on SheetJS xlsx module to parse/build excel sheets.
  • Built with TypeScript for static type checking with exported types along the library.

Install

npm install node-xlsx --save
# or
pnpm add node-xlsx

Quickstart

Parse an xlsx file

import xlsx from 'node-xlsx';
// Or var xlsx = require('node-xlsx').default;

// Parse a buffer
const workSheetsFromBuffer = xlsx.parse(fs.readFileSync(`${__dirname}/myFile.xlsx`));
// Parse a file
const workSheetsFromFile = xlsx.parse(`${__dirname}/myFile.xlsx`);

Build an xlsx file

import xlsx from 'node-xlsx';
// Or var xlsx = require('node-xlsx').default;

const data = [
  [1, 2, 3],
  [true, false, null, 'sheetjs'],
  ['foo', 'bar', new Date('2014-02-19T14:30Z'), '0.3'],
  ['baz', null, 'qux'],
];
var buffer = xlsx.build([{name: 'mySheetName', data: data}]); // Returns a buffer

Custom column width

import xlsx from 'node-xlsx';
// Or var xlsx = require('node-xlsx').default;

const data = [
  [1, 2, 3],
  [true, false, null, 'sheetjs'],
  ['foo', 'bar', new Date('2014-02-19T14:30Z'), '0.3'],
  ['baz', null, 'qux'],
];
const sheetOptions = {'!cols': [{wch: 6}, {wch: 7}, {wch: 10}, {wch: 20}]};

var buffer = xlsx.build([{name: 'mySheetName', data: data}], {sheetOptions}); // Returns a buffer

Spanning multiple rows A1:A4 in every sheets

import xlsx from 'node-xlsx';
// Or var xlsx = require('node-xlsx').default;

const data = [
  [1, 2, 3],
  [true, false, null, 'sheetjs'],
  ['foo', 'bar', new Date('2014-02-19T14:30Z'), '0.3'],
  ['baz', null, 'qux'],
];
const range = {s: {c: 0, r: 0}, e: {c: 0, r: 3}}; // A1:A4
const sheetOptions = {'!merges': [range]};

var buffer = xlsx.build([{name: 'mySheetName', data: data}], {sheetOptions}); // Returns a buffer

Spanning multiple rows A1:A4 in second sheet

import xlsx from 'node-xlsx';
// Or var xlsx = require('node-xlsx').default;

const dataSheet1 = [
  [1, 2, 3],
  [true, false, null, 'sheetjs'],
  ['foo', 'bar', new Date('2014-02-19T14:30Z'), '0.3'],
  ['baz', null, 'qux'],
];
const dataSheet2 = [
  [4, 5, 6],
  [7, 8, 9, 10],
  [11, 12, 13, 14],
  ['baz', null, 'qux'],
];
const range = {s: {c: 0, r: 0}, e: {c: 0, r: 3}}; // A1:A4
const sheetOptions = {'!merges': [range]};

var buffer = xlsx.build([
  {name: 'myFirstSheet', data: dataSheet1},
  {name: 'mySecondSheet', data: dataSheet2, options: sheetOptions},
]); // Returns a buffer

Beware that if you try to merge several times the same cell, your xlsx file will be seen as corrupted.

  • Using Primitive Object Notation Data values can also be specified in a non-abstracted representation.

Examples:

const rowAverage = [[{t: 'n', z: 10, f: '=AVERAGE(2:2)'}], [1, 2, 3]];
var buffer = xlsx.build([{name: 'Average Formula', data: rowAverage}]);

Refer to xlsx documentation for valid structure and values:

Troubleshooting

This library requires at least node.js v10. For legacy versions, you can use this workaround before using the lib.

npm i --save object-assign
Object.prototype.assign = require('object-assign');

Contributing

Please submit all pull requests the against master branch. If your unit test contains javascript patches or features, you should include relevant unit tests. Thanks!

Available scripts

ScriptDescription
startAlias of test:watch
testRun mocha unit tests
test:watchRun and watch mocha unit tests
lintRun eslint static tests
compileCompile the library
compile:watchCompile and watch the library

Authors

Olivier Louvignes

Apache License 2.0

Copyright (C) 2012-2014  Olivier Louvignes

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

Except where noted, this license applies to any and all software programs and associated documentation files created by the Original Author and distributed with the Software:

Inspired by SheetJS gist examples, Copyright (c) SheetJS.

Keywords

FAQs

Last updated on 15 Apr 2024

Did you know?

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Install

Related posts

SocketSocket SOC 2 Logo

Product

  • Package Alerts
  • Integrations
  • Docs
  • Pricing
  • FAQ
  • Roadmap

Stay in touch

Get open source security insights delivered straight into your inbox.


  • Terms
  • Privacy
  • Security

Made with ⚡️ by Socket Inc