Download xlsx from S3 and parse it

Question

I need a service to download an excel file from Amazon S3, then parse with node-xlsx

The problem is that I can\'t get xlsx to parse the file. When I try to read back

Answer 1

Another way of doing this is using exceljs

const AWS = require('aws-sdk');
const Excel = require('exceljs');

async function downloadFile(){
    AWS.config.update({
      accessKeyId: AMAZON_ACCESS_KEY,
      secretAccessKey: AMAZON_SECRET_ACCESS_KEY,
    });

    const s3 = new AWS.S3();
    const stream = await s3.getObject({ Bucket: 'yor_buket', Key: 'file_name'}).createReadStream();
    return stream;
}


async function loadWorkbook(stream){

    return new Promise((resolve, reject) = > {
        let rows = [];
        const workbook = new Excel.Workbook();

        workbook.xlsx.read(stream).then(function(workbook){

            const worksheet = workbook.getWorksheet('sheet_name');

            worksheet.eachRow({ includeEmpty: false}, function(row) {
                rows.push(row.values); 
            });
        });
        resolve(rows);
    });

}

async function loadFromS3(){
    const stream = await downloadFile();
    const dataRows = await loadWorkbook(stream);
    console.log(dataRows);
}