Copy file out of ASAR archive for Electron app

copyContent.js

var fs = require("fs");
var app = require("electron").remote.app;
var fsj = require("fs-jetpack");

// example usage : copyFileOutsideOfElectronAsar( "myFolderInsideTheAsarFile", app.getPath("temp") + "com.bla.bla"

var copyFileOutsideOfElectronAsar = function(sourceInAsarArchive, destOutsideAsarArchive) {
if ( fs.existsSync( app.getAppPath() + "/" + sourceInAsarArchive ) ) {

                  // file will be copied
                  if ( fs.statSync( app.getAppPath() + "/" + sourceInAsarArchive ).isFile() ) {

                      fsj.file( destOutsideAsarArchive , {content: fs.readFileSync( app.getAppPath() + "/" + sourceInAsarArchive ) });

                  }

                  // dir is browsed
                  else if ( fs.statSync( app.getAppPath() + "/" + sourceInAsarArchive ).isDirectory() ) {

                      fs.readdirSync( app.getAppPath() + "/" + sourceInAsarArchive ).forEach(function(fileOrFolderName) {

                         copyFileOutsideOfElectronAsar( sourceInAsarArchive + "/" + fileOrFolderName, destOutsideAsarArchive + "/" + fileOrFolderName );
                      });
                  }
                }

}