1  export class Size {
 2    public width: number
 3    public height: number
 4  
 5    public constructor(width: number, height: number) {
 6      this.width = width
 7      this.height = height
 8    }
 9  
10    public clone(): Size {
11      return new Size(this.width, this.height)
12    }
13  }