JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//cdn.jsdelivr.net/npm/phaser@3.70.0/dist/phaser.js"></script>
<div id="gamecontainer"></div>

JavaScript

class GameScene extends Phaser.Scene
{
    constructor ()
    {
        super();
    }

    preload ()
    {
        this.load.spritesheet('brawler', 'https://labs.phaser.io/assets/animations/brawler48x48.png', { frameWidth: 48, frameHeight: 48 });
    }

    create ()
    {
        // Text section
        const current = this.add.text(48, 300, 'ANIMATION TIME (should be close to 2400): ', { color: '#00ff00' });

        // Animation set
        this.anims.create({
            key: 'walk',
            frames: [
                { key: 'brawler', frame: 0, duration: 200 },
                { key: 'brawler', frame: 1, duration: 100 },
                { key: 'brawler', frame: 2, duration: 200 },
                { key: 'brawler', frame: 3, duration: 100 },
                { key: 'brawler', frame: 0, duration: 200 },
                { key: 'brawler', frame: 1, duration: 100 },
                { key: 'brawler', frame: 2, duration: 200 },
                { key: 'brawler', frame: 3, duration: 100 },
                { key: 'brawler', frame: 0, duration: 200 },
                { key: 'brawler', frame: 1, duration: 100 },
                { key: 'brawler', frame: 2, duration: 200 },
                { key: 'brawler', frame: 3, duration: 100 },
                { key: 'brawler', frame: 0, duration: 200 },
                { key: 'brawler', frame: 1, duration: 100 },
                { key: 'brawler', frame: 2, duration: 200 },
                { key: 'brawler', frame: 3, duration: 100 }
                ],
            repeat: 0
        });      

        const cody = this.add.sprite(600, 100);
        cody.setScale(8);
        cody.play('walk');

        const currentTime = Date.now()
        cody.on('animationcomplete', () => {
            const time = Date.now() - currentTime
            current.setText(`ANIMATION TIME (should be close to 2400): ${time}`);
        })

    }
}


new Phaser.Game({
  type: Phaser.AUTO,
  width: 800,
  height: 400,
  pixelArt: true,
  scene:...