Is it possible to get a property of an object having the key being another property?
Handlebars data:
{
   person: {
      firstName: 'John',
      lastName: 'Doe'
   },
   propertyToGetFromPerson: 'firstName'
}
Then in the template itself I would like to get firstName of person but by using the propertyToGetFromPerson property in stead of the literal 'firstName'.
In JavaScript this would be: person[propertyToGetFromPerson]
So I am searching for the equivalent in handlebars if there is one.
I am looking for an answer without using helpers, if there is no answer I can write a helper.