class Rectangle extends Entityimport { Rectangle } from "https://deno.land/x/caviar@2.6.9/web/mod.ts"; ConstructorsnewRectangle(x: number,y: number,width: number,height: number,fill: RGBA | string,)Propertiesbottom: numberdown: numberfill: RGBAleft: numberright: numberup: numberMethodscolorNorm(rgba: RGBA): RGBAsetAlpha(a: number): voidsetFill(c: RGBA | string): void