initColumns() {
    this.formatters = [];
    this.colorState = {};

    for (let colIndex = 0; colIndex < this.table.columns.length; colIndex++) {
      const column = this.table.columns[colIndex];
      column.title = column.text;

      for (let i = 0; i < this.panel.styles.length; i++) {
        const style = this.panel.styles[i];

        const regex = stringToJsRegex(style.pattern);
        if (column.text.match(regex)) {
          column.style = style;

          if (style.alias) {
            column.title = column.text.replace(regex, style.alias);
          }

          break;
        }
      }

      this.formatters[colIndex] = this.createColumnFormatter(column);
    }
  }

function matchSeriesOverride(aliasOrRegex, seriesAlias) {
  if (!aliasOrRegex) {
    return false;
  }

  if (aliasOrRegex[0] === '/') {
    const regex = stringToJsRegex(aliasOrRegex);
    return seriesAlias.match(regex) != null;
  }

  return aliasOrRegex === seriesAlias;
}

kbn.stringToJsRegex = str => {
  deprecationWarning('kbn.ts', 'kbn.stringToJsRegex()', '@grafana/ui');
  return stringToJsRegex(str);
};