import { Canvas } from '@antv/g';
import { Renderer } from '@antv/g-canvas';
import { Button } from '@antv/gui';

// create a canvas
const canvas = new Canvas({
  container: 'container',
  width: 600,
  height: 600,
  renderer: new Renderer(),
});

// create a button
const button = new Button({
  /* ... */
});

canvas.appendChild(button);

// render it
canvas.render();