Add property and copy array of objects into an nested objects

I would like to copy an array of objects in a nested object with new property. How can I use es6 to achieve something like this

I would like to copy:

['cat', 'Dog', 'monkey'] into

[{"text":"cat"},{"text":"Dog","extraClasses":["ti-extra"]}, {"text":"monkey"}]

>Solution :

Maybe function like this where getClasses function returns classes array.

['cat', 'Dog', 'monkey'].map((item) => {
  return { text: item, extraClasses: getClasses() };
});