rc-table/es/ColGroup.js

import * as React from 'react';
import { INTERNAL_COL_DEFINE } from './utils/legacyUtil';

function ColGroup(_ref) {
  var colWidths = _ref.colWidths,
      columns = _ref.columns,
      columCount = _ref.columCount;
  var cols = [];
  var len = columCount || columns.length; // Only insert col with width & additional props
  // Skip if rest col do not have any useful info

  var mustInsert = false;

  for (var i = len - 1; i >= 0; i -= 1) {
    var width = colWidths[i];
    var column = columns && columns[i];
    var additionalProps = column && column[INTERNAL_COL_DEFINE];

    if (width || additionalProps || mustInsert) {
      cols.unshift(React.createElement("col", Object.assign({
        key: i,
        style: {
          width: width,
          minWidth: width
        }
      }, additionalProps)));
      mustInsert = true;
    }
  }

  return React.createElement("colgroup", null, cols);
}

export default ColGroup;