charts crash with [] empty array

[dcsan]

大家好！大问题发现：

charts crash with empty array

    new wxCharts({
      canvasId: 'columnCanvas',
      type: 'column',
      categories: days,
      series: [{
        name: 'stars',
        // data: [15, 20, 45, 37, 4, 80]    // OK
        data: []   // crash 😢 
      }, ],
      yAxis: {
        format: function (val) {
          return val + ''
        }
      },
      width: 300,
      height: 160
    })

[pollux611]

有解决办法么？