WIP G2 Token API 设计

[pepper-nice]

const chart = new Chart({ theme: 'classic', container, canvas });
chart.data([
  { genre: 'Sports', sold: 275 },
  { genre: 'Strategy', sold: 115 },
  { genre: 'Action', sold: 120 },
  { genre: 'Shooter', sold: 350 },
  { genre: 'Other', sold: 150 },
]);

chart.theme('token', {
  // 修改默认的 token 样式
  palette: {
    baseColor: 'blue',
  },
  fontSize: 12,
  radius: 2,
  intervalInset: 2,
  // ...
});

chart
  .interval()
  .encode('x', 'genre')
  .encode('y', 'sold')
  .encode('color', 'genre');
const finished = chart.render();

Token 梳理