XLSX Write Stream is a streaming writer for XLSX spreadsheets. Its purpose is to replace CSV for large exports, because using CSV in Excel is very buggy and error-prone. It's very efficient and can quickly write hundreds of thousands of rows with low memory usage.

XLSX Write Stream does not support formatting, charts, comments and a myriad of other OOXML features. It's strictly an CSV replacement.

npm i 'xlsx-write-stream'

import XLSXTransformStream from 'xlsx-write-stream';

// Input stream needs to implement Stream.Readable interface
// and each chunk should be an array of values (only string, date and number are supported value types)
inputStream
    .pipe(new XLSXTransformStream()) // This stream transforms the input into a xlsx format
    .pipe(fs.createWriteStream('file.xlsx')); // We need to store the result somewhere

This package is available as open source under the terms of the MIT License.