text: define([""], function () {
  
      var canvas = document.getElementById("gameCanvas");
      var context = canvas.getContext("2d");
      context.canvas.width = window.innerWidth;
      context.canvas.height = window.innerHeight - 70;
      var canvasWidth = canvas.width;
      var canvasHeight = canvas.height;
  
      var Canvas = {
          //functions
          canvas: canvas,
          context: context,
          contextCanvasWidth: context.canvas.width,
          contextCanvasHeight: context.canvas.height,
          canvasWidth: canvasWidth,
          canvasHeight: canvasHeight
      };
  
      return Canvas;
  });