Node version (or tell us if you're using electron or some other framework):

Electron version 1.3.4

ShellJS version (the most recent version/Github branch you see the bug on):

Version 0.7.0

Operating system:

OS X El Capitan 10.11.16

Description of the bug:

I've created a small electron App which needs ffmpeg to convert a movie to a gif. Nothing special.
ffmpeg is installed via homebrew

brew install ffmpeg

When I run my electron app local (without packaging) everything worked like expected.
But when I package my app with the electron-packager shelljs can't find ffmpeg anymore. The code is then 127 instead of 0 :(
Because your current documentation said that it run in sh I've checked it here if ffmpeg is missing. But the terminal output looks like this:

$ /bin/sh
sh-3.2$ which ffmpeg
/usr/local/bin/ffmpeg

I've also switched to bash with the option shell (see Example ShellJS command) but that doesn't help.

What I'm doing wrong? And why it's working without packaging but break with packaging?
Or isn't it an error in ShellJs? 💭

Example ShellJS command to reproduce the error:

I've als tested it with shell: '/bin/sh' and shell: '/bin/bash' nothing works.

exec('ffmpeg -i ' + filenames[0] + ' ' + path, {silent:true, async:true},  function(code, stdout, stderr) {
    // Send error code to renderer to debug
    loadingWin.webContents.executeJavaScript('console.log(' + code + ')')
}

Don't know if this a related issue #480