How do I scale a group in Phaser 3 - game-engine

Question

In Phaser 2 we scale a simple by setting the scale property as explained in docs:
https://phaser.io/examples/v2/groups/group-scale
But there is no equivalent in Phaser v3.
The possible url https://phaser.io/examples/v3/groups/group-scale points to nothing. And if I do:
this.enemies = this.add.group();
this.enemies.scale.set(2, 2);
It throws:
Phaser v3.19.0 (WebGL | Web Audio) https://phaser.io
indexph.js:22 Uncaught TypeError: Cannot read property 'set' of undefined
What is the appropriate form to scale a group of sprites in Phaser 3?
The code below should work, I think, But it doesn't.... it doesn't scale objects that are created from the group:
preload() {
this.load.atlas("sprites", "assets/spritesheet.png", "assets/spritesheet.json")
}
create() {
this.enemies = this.add.group({
key: 'sprites' ,
setScale: { x: 0.1, y: 0.1 }
});
this.enemies.create(60, 60, 'sprites', 'hamburguer.png');

Answer 1

In Phaser 3, you can scale a group by modifying the GroupConfig object passed in when you declare your group.
GroupConfig API Reference. You can see also see a live demo here.
In your case, to scale this group you should simply create it like:
this.enemies = this.add.group({
setScale: { x: 2, y: 2}
});
Alternatively, you could iterate through the group once it's created and scale each child object independently.
this.enemies = this.add.group();
this.enemies.children.iterate((child) => {
child.setScale(2, 2);
});

Answer 2

var config = {
type: Phaser.AUTO,
parent: 'phaser-example',
width: 800,
height: 600, loader: {
baseURL: 'https://raw.githubusercontent.com/nazimboudeffa/assets/master/',
crossOrigin: 'anonymous'
},
scene: {
preload: preload,
create: create
},
physics: {
default: 'arcade'
}
};
var game = new Phaser.Game(config);
function preload ()
{
this.load.image('alien1', 'sprites/phaser-alien.png');
this.load.image('alien2', 'sprites/alien2.png');
}
function create ()
{
this.enemies1 = this.add.group();
this.enemies2 = this.add.group();
for (let i = 0; i < 64; i++)
{
let x = Phaser.Math.Between(0, 400);
let y = Phaser.Math.Between(0, 600);
this.enemy1 = this.add.image(x, y, 'alien1');
this.enemies1.add(this.enemy1);
}
for (let i = 0; i < 64; i++)
{
let x = Phaser.Math.Between(400, 800);
let y = Phaser.Math.Between(0, 600);
this.enemy2 = this.add.image(x, y, 'alien2');
this.enemies2.add(this.enemy2);
}
console.log(this.enemies1.getLength())
//console.log(this.enemies.getChildren())
console.log(this.enemies1.getChildren()[2])
for (let i = 0; i < 64; i++)
{
this.enemies1.getChildren()[i].setScale(2);
}
}
<script src="//cdn.jsdelivr.net/npm/phaser#3.19.0/dist/phaser.js"></script>