node.js - Download xlsx from S3 and parse it -


i need service download excel file amazon s3, parse node-xlsx

the problem can't xlsx parse file. when try read file wrote, isn't found code.

i'm not quite sure if best approach, got far:

router.get('/process', (req, res) => {     var filename = 'https://some-bucket.s3.amazonaws.com/some-excel-file.xlsx'     https.get(filename, response => {         var body = ''         response.on('data', chunk => body += chunk)         response.on('end', () => {              //fs being imported on file             fs.writefile(__dirname + '/test.xlsx', body)              var f = fs.createreadstream(__dirname + '/test.xlsx')              var book = xlsx.parse(f)             book.foreach(sheet => console.log('sheet', sheet.name) )              res.status(200)                   })         .on('error', e => {             res.status(500)         })     })     return })

fs.writefile asynchronous. file won't there till call called.

https://nodejs.org/api/fs.html#fs_fs_writefile_file_data_options_callback

fs.writefile('message.txt', 'hello node.js', (err) => {   if (err) throw err;   console.log('it\'s saved!'); });

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