[Interest] Javascript: export class?

[Alexander Dyagilev]

Hello,

Can I use a class defined in another .js file?

I.e. class A defined in a.js file. I want to define another B class in 
b.js which will be extending A class.

I load these files using such code:

QJSEngine::evaluate(afile.readAll(), afile.fileName());
QJSEngine::evaluate(bfile.readAll(), bfile.fileName());

For now, the second line throws error that A class is undefined.