How to display the properties of an object stored in the included js file using pug?

Question

HTML

There is an object that is processed in a js file included in pug. When I try to compile it, I get the error "Cannot read property 'length' of undefined". Pug can't get object from third party file? Because when you add it directly to pug, everything is ok.
https://codepen.io/Petrov_Ruslan/pen/eYYNeao
_

Answer 1

Pass data from js file to pug'a render method via locals