Discrepant with qs.parse passing an object

[tjconcept]

var qs = require('qs');
var qsparser = require('querystringparser');

console.log(qs.parse({
    key: 'Value & value',
}));

console.log(qsparser.parse({
    key: 'Value & value',
}));

{ key: 'Value & value' }
{ key: 'Value ', ' value': '' }

Passing an object to qs.parse however is not documented, but probably should have been since exposed.