Testing local bam

localbam.js

import React, { Component } from 'react';
import './App.css';
import { BamFile } from '@gmod/bam';

class App extends Component {

  handleFileUpload = async (event) => {
    const fileList = Array.from(event.target.files);
    const baiFilehandle = fileList.filter(f => f.name.endsWith('.bai'))[0];
    const bamFilehandle = fileList.filter(f => !f.name.endsWith('.bai'))[0];
    const bam = new BamFile({
        bamFilehandle,
        baiFilehandle,
    });
    const header = await bam.getHeader();
    console.log(header);
}
  render() {

    return (
      <div className="App">
        <input type="file" id="trackFile" multiple onChange={this.handleFileUpload} />
      </div>
    );
  }
}

export default App;