[TIMOB-23875] Windows: Incorrect __filename value

Description

When using the code below the logged value is set incorrectly to '/sub.js', it should be /'index.js'. In 5.4.0.GA the code returned the value 'index', although this value is different to the expected value, because it no longer refers to the correct file I am labeling this a *regression* Removing require('./sub.js') makes the issue disappear so the error is probably caused by that require. This can also be confirmed by doing var filename = __filename before the require and then setting the filename property to this variable.

var test = require('./index');
console.log(test.filename);

var sub = require('./sub');
module.exports = {
    filename: __filename,
    name: 'index.js',
    sub: sub.name
};

module.exports = {
    name: 'sub.js',
};

Steps to reproduce

Actual result

Logging is '/sub.js'

Expected result

The logging should be '/index.js'