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/* xlsx.js (C) 2013-present SheetJS -- http://sheetjs.com *//* eslint-env node */// cat file.xlsx | curl --header 'content-type: application/octet-stream' --data-binary @- "http://localhost:3000/"const XLSX = require('xlsx');
const process_RS = (stream, cb) => {  var buffers = [];  stream.on('data', function(data) { buffers.push(data); });  stream.on('end', function() {    var buffer = Buffer.concat(buffers);    var workbook = XLSX.read(buffer, {type:"buffer"});    cb(workbook);  });};
module.exports = (hook) => {	process_RS(hook.req, (wb) => {		hook.res.writeHead(200, { 'Content-Type': 'text/csv' });		const stream = XLSX.stream.to_csv(wb.Sheets[wb.SheetNames[0]]);		stream.pipe(hook.res);	});};