const Xlsx = require('xlsxjs');
const workbook = new Xlsx();
let worksheet = workbook.addWorksheet('sheetName');
// 样式写法可以参考 https://github.com/guyonroche/exceljs#styles
�const titleStyle = {
    font: {
      bold: true,
      size: 9,
      name: 'SimSun',
    },
}
// 渲染单个单元格
worksheet
    .getCell(`A1`)
    .setValue('a1')
    .setStyle(titleStyle);

// 合并单元格
worksheet
    .getCell(`A2:B2`)
    .setValue('a2:b2')
    .setStyle(titleStyle);
// 批量渲染单元格
worksheet.bulkRender({
    dataSource: [{
        title: 'title',
        name: '实例'
    }],
    worksheet,
    columns: [{
      title: '商品编号',
      dataIndex: 'skuCode',
      style: bodyStyle,
      width: 10,
    },
    {
      title: '商品名称',
      style: bodyStyle,
      dataIndex: 'name',
      width: 31,
    }],
    titleStyle,
  });
//  渲染buffer
let buffer = yield workbook.writeToBuffer();
return buffer;