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

6.9.1

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

0.7.5

Operating system:

OS X 10.11.6

Description of the bug:

There's a lint warning on line 50 of src/rm.js

Example ShellJS command to reproduce the error:

$ npm run lint

> shelljs@0.7.5 lint /Users/freitagb/src/javascript/shelljs
> eslint .

/Users/freitagb/shelljs/src/rm.js
  50:5  warning  Unexpected constant condition  no-constant-condition

✖ 1 problem (0 errors, 1 warning)