How to Create xml file and download it or convert into base64 string

 How to Create xml file and download it or convert into base64 string

1).First Install Following packages from Node module

1).npm install xml-writer
page Url:https://www.npmjs.com/package/xml-writer

2).npm install file-saver --save
page Url:https://www.npmjs.com/package/file-saver

Code Writing:-

import * as XMLWriter from 'xml-writer';
import * as FileSaver from 'file-saver';
import { Injectable } from '@angular/core';
@Injectable({
  providedIn: 'root',
})
export class HeroService {
  constructor() { }
generateXml(data,type,IsGenerate){
var XMLWriter = require('xml-writer');
xw = new XMLWriter;
xw.startElement('root').writeAttribute('foo', 'value')
.text('Some content');
if (IsGenerate) {
      const blob = new Blob([this.xw], { type: 'application/xml;charset=UTF-8' });
      FileSaver.saveAs(blob, paramData.ReferenceNo + '.xml');
      return '';
    } else {
      return this.xw.output;
    }
}

}

Now Need to Call Service in Your Component:-

postJson.XMLString = btoa(this.dealFastXMLService.generateXml(this.trademodel, true, false));