extract command result with many 0 bytes files (almost all source files)

[esakal]

Hi, my environment: OS: MacOS high sierra 10.13.4, node: v8.9.4

I'm trying to extract asar file as followed:

$ npm install -g asar
$ cd application-name.app/Contents/Resources
$ mkdir code
$ asar extract app.asar code

it ends without errors and I have files in the code folder but most of the files are zero bytes like shown below:

Please assist, Thanks Eran.

[payitforwardnow]

Hi Eran, I've seen this issue before. Is the asar encrypted or protected in any way? I learned recently that there is something called "hidden errors". This happened to me when I tried to tweak the code to handle transforms on extract. Never saw an error but there was in fact an error during the extract process because I experienced the same 0 byte length files. Based on my experience, it appears the directory structure and 0 byte files (placeholders) are created first and the files don't receive any data unless the extract process completes successfully. Assuming the files weren't packed with 0 byte length (probably a reasonable assumption) there was probably some kind of error that occurred but is "hidden". I've tried the same process on a few electron apps with no issues. The Console app may provide system logs that could be helpful.