Elegant way to copy only a part of an object [dupl

Question

This question already has answers here:

One-liner to take some properties from object in ES 6 (11 answers)

Closed 2 years ago.

I would like to create an new object from a bigger one, by copying only a few properties from it. All the solutions I know are not very elegant, I wonder if there is a better choice, native if possible (no additional function like at the end of the following code)?

Here is what I usually do for now:

// I want to keep only x, y, and z properties:
let source = {
    x: 120,
    y: 200,
    z: 150,
    radius: 10,
    color: 'red',
};

// 1st method (not elegant, especially with even more properties):
let coords1 = {
    x: source.x,
    y: source.y,
    z: source.z,
};

// 2nd method (problem: it pollutes the current scope):
let {x, y, z} = source, coords2 = {x, y, z};

// 3rd method (quite hard to read for such simple task):
let coords3 = {};
for (let attr of ['x','y','z']) coords3[attr] = source[attr];

// Similar to the 3rd method, using a function:
function extract(src, ...props) {
    let obj = {};
    props.map(prop => obj[prop] = src[prop]);
    return obj;
}
let coords4 = extract(source, 'x', 'y', 'z');

Answer 1

IIFE with destructuring maybe?:

const coords = (({x, y, z}) => ({x, y, z}))(source);