exec() doesn't apply the arguments correctly

[tamasmonus-cas]

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

v8.11.2

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

v0.8.2

Operating system:

Linux

Description of the bug:

I'm creating an auto merge and publish for our CI process. When I get to publish I want to execute the following command:

shell.exec(`npm version prepatch --preid=beta`);

But it seems that the --preid argument is not passed correctly because the resulting version number will won't have the 'beta' preid. If I run this same command inside my terminal, then it works, just okay. Any idea is much appreciated, because I'm starting to pull out my hair right now, because of this.

[tamasmonus-cas]

Okay, I found the solution/problem. Somehow, some time ago during my struggling I installed a package called publish. Which has a dependency/requires npm@2.x.x.... So... I had a locally installed npm inside node_modules with version 2.x.x and that was used by shelljs -.-'