[TIMOB-27899] Common: path.parse with a file extension but no directory results in an invalid dir value

Description

When calling path.parse('a.js' the dir value in the returned object is dir: 'a.j' which is incorrect, the value should be dir: ''

Steps to reproduce

1. Add console.log(path.parse('a.js')); to your app.js and build

Actual

[INFO] { root: '', dir: 'a.j', base: 'a.js', ext: '.js', name: 'a' }

Expected

[INFO] { root: '', dir: ''. base: '', ext: '.js', name: 'a' }