How to trim each object in an array?

Question

JavaScript

Hello! Can you please tell me the best way to cut each object in an array?
There is such an object with arrays

data = {
test1: [{id: '1', ...}, {id: '2', ...}, ...],
test2: [{id: '3', ...}, {id: '4', ...}, ...],
  test3: [],
  test4: [],
}

and you have to do this

data2 = {
test1: ['1', '2'...],
test2: ['3', '4' ...],
 test3: [],
 test4: [],
}

What is the best way to do this?
Lodash can be used.
Thank you!

Answer 1

var resultTest1 = data.test1.map((o) => o.id)

Answer 2

In your case, this code

const data = { ... };
const data2 = {};
Object.keys(data).forEach(key => {
  data2[key] = data[key].map(obj => obj.id);
});