at the class getter property,why is need it initialize, if not then report error code is ts(2739) about typescript HOT 2 CLOSED

      let cinfo: CanvasInfo = new CanvasInfo();
      cinfo.context = context;
      cinfo.format = format;
      cinfo.renderDescriptor = {
        colorAttachments: [{
          view: context.getCurrentTexture().createView(),
          loadOp: 'clear',
          storeOp: 'store',
          clearValue: color ? { r: color.x, g: color.y, b: color.z, a: color.w } : { r: 0.30, g: 0.0, b: 0.0, a: 1.0 }
        }],
        depthStencilAttachment: {
          view: depthTexture.createView(),
          depthLoadOp: 'clear',
          depthStoreOp: 'store',
          depthClearValue: 1.0,
        }
      };