How to use the @single-cell-portal/igv.createBrowser function in @single-cell-portal/igv

// that case.
    locus = [fallbackLocus]
  }

  const genesTrackName = `Genes | ${bamAndBaiFiles[0].genomeAnnotation.name}`
  const genesTrack = getGenesTrack(gtfFiles, genomeId, genesTrackName)
  const bamTracks = getBamTracks(bamAndBaiFiles)
  const tracks = [genesTrack].concat(bamTracks)

  const igvOptions = { reference, locus, tracks }

  if (typeof searchOptions !== 'undefined') {
    igvOptions['search'] = searchOptions
  }

  igv.createBrowser(igvContainer, igvOptions)

  // Log igv.js initialization in Google Analytics
  ga('send', 'event', 'igv', 'initialize')
  log('igv:initialize')
}