index.js  CanvasOption.jsexport default class canvasOption { constructor() { this.canvas = document.querySelector('canvas') this.ctx = this.canvas.getContext('2d') this.dpr = window.devicePixelRatio this.fps = 60 this.interval = 1000 / this.fps this.canvasWidth = innerWidth this.canvasHeight = innerHeight }}  index.jsimport canvasOption from "./CanvasOption.js"class Canva..