Customize empty value cells

import { IDataOptions, IDataSet, PivotViewComponent } from '@syncfusion/ej2-react-pivotview';
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { pivotData } from './datasource';

class App extends React.Component<{}, {}>{

  public dataSource: IDataOptions = {
    columns: [{ name: 'Year', caption: 'Production Year' }, { name: 'Quarter' }],
    data: pivotData as IDataSet[],
    expandAll: false,
    filters: [],
    emptyCellsTextContent: '*',
    formatSettings: [{ name: 'Amount', format: 'C2'}],
    columns: [{ name: 'Year', caption: 'Production Year' }, { name: 'Quarter' }],
    values: [{ name: 'Sold', caption: 'Units Sold' }, { name: 'Amount', caption: 'Sold Amount' }],
    rows: [{ name: 'Country' }, { name: 'Products' }],
  }
  public pivotGridObj: PivotViewComponent;
  render() {
    return <PivotViewComponent  ref={d => this.pivotGridObj = d!} id='PivotView' height={280} dataSource={this.dataSource}></PivotViewComponent>
  }
};

ReactDOM.render(<App />, document.getElementById('pivotview'));

import { PivotViewComponent } from '@syncfusion/ej2-react-pivotview';
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { pivotData } from './datasource';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.dataSource = {
            columns: [{ name: 'Year', caption: 'Production Year' }, { name: 'Quarter' }],
            data: pivotData,
            expandAll: false,
            filters: [],
            emptyCellsTextContent: '*',
            formatSettings: [{ name: 'Amount', format: 'C2' }],
            columns: [{ name: 'Year', caption: 'Production Year' }, { name: 'Quarter' }],
            values: [{ name: 'Sold', caption: 'Units Sold' }, { name: 'Amount', caption: 'Sold Amount' }],
            rows: [{ name: 'Country' }, { name: 'Products' }],
        };
    }
    render() {
        return <PivotViewComponent ref={d => this.pivotGridObj = d} id='PivotView' height={280} dataSource={this.dataSource}></PivotViewComponent>;
    }
}
;
ReactDOM.render(<App />, document.getElementById('pivotview'));