Expand nested objects

[heruan]

Is it possible to do something like this?

const params = {
    user: {
        id: 123
    }
};

template("/users/{user.id}").fill(params); // => "/users/123"

[nichtich]

The specification says:

Structures are processed as if they are an associative array
with names corresponding to the fields in the structure definition
and "." separators used to indicate name hierarchy in substructures

So your example must be expanded to "/users/123"