Node.js return new file name after rename

Question

im using the fs.rename from node, however im running into the issue that im not able to return the new fileName after it has been renamed.

fs.rename(file, directoryPath + md5(buf + randomNumber()) + '.mp3',(err)=> {
  if (err) return reject(err);
  resolve(md5(buf));
})

Instead of the md5(buf) here what would i do to get the new name of the file? what im recieving now from the resolve is a new md5 name for the file, but before it has been resolved the filename is different.

let filename = directoryPath + md5(buf + randomNumber()) + '.mp3'. — tkausl
– tkausl, Commented Sep 18, 2018 at 19:48
let filename = directoryPath + md5(buf + randomNumber()) + '.mp3'; fs.rename(file, directoryPath + md5(buf + randomNumber()) + '.mp3', (err) => { if (err) return reject(err); resolve(filename); }) like this? — Alexander Munck Af Rosenschöld
– Alexander Munck Af Rosenschöld, Commented Sep 18, 2018 at 19:52

Elmer · Accepted Answer · 2018-09-18 19:55:39Z

2

Well, you can't!

What you can do, is first put the name in a variable so you can use it later!

Like this:

const renameTo = directoryPath + md5(buf + randomNumber()) + '.mp3';
fs.rename(file, renameTo,(err)=> {
  if (err) return reject(err);
  resolve(renameTo);
})

happy coding!

answered Sep 18, 2018 at 19:55

Elmer

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