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asar.extractFile is Sync

See original GitHub issue

So… I just lost a couple minutes with this and thought it was probably a minor accident or something.

asar.extractFile is not returning a promise or using a callback. I just checked out the imprint of the code and it seems you are calling disk.readFileSync.

(archive, filename) {
  const filesystem = disk.readFilesystemSync(archive)
  return disk.readFileSync(filesystem, filename, filesystem.getFile(filename))
}

is there a way to call extractFile Asynchronously? Thanks

Issue Analytics

State:
Created 5 years ago
Comments:6 (3 by maintainers)

Top GitHub Comments

2reactions

MarshallOfSoundcommented, Feb 26, 2019

@malept You’d have to pipe the file as a stream and read the file from the correct offset as your stream encounters it. Super hard to implement correctly and probably not worth it in the big scheme of things

0reactions

Slapboxcommented, Mar 3, 2021

@MarshallOfSound’s explanation makes sense - but that leaves me wondering how Electron’s fs can read individual files out of asar files?

Unless I’m crazy, I think I’ve used fs.copyFileSync in Electron to copy files out of the asar.

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