asar

Create asar archive

$ asar pack [dir/] [output.asar]

$ asar extract [archive.asar] [output_dir/]

$ asar list [archive.asar]

$ asar extract-file [archive.asar] [path/in/archive] [output_file]

asar pack|extract|list|extract-file arguments

asar creates and extracts Electron archive files. ASAR (Atom Shell Archive) is a tar-like format used by Electron applications to package source files into a single file while maintaining random access capability.
The format allows Electron to read files directly from the archive without extraction, improving load times.

pack dir output

Create archive from directory

Extract archive to directory

List archive contents

Extract single file

ASAR archives are not encrypted; contents can be easily extracted. Some Electron apps may integrity-check their archives. Not suitable for sensitive data.

ASAR was developed for the Atom text editor (later Electron framework) as a way to package Node.js applications efficiently.

tar(1), npm(1), electron(1)