Gerar Arquivo Excel com JSON usando a lib XLSX no Javascript

exportToExcel.js

// É necessário instalar o xlsx
// Foi testado com a versão "xlsx": "^0.14.2"

function Workbook() {
  if (!(this instanceof Workbook))
      return new Workbook()

  this.SheetNames = []

  this.Sheets = {}
}

const download = (url, name) => {
  let a = document.createElement('a')
  a.href = url
  a.download = name
  a.click()

  window.URL.revokeObjectURL(url)
}


function s2ab(s) {
  const buf = new ArrayBuffer(s.length)

  const view = new Uint8Array(buf)

  for (let i=0; i !== s.length; ++i)
      view[i] = s.charCodeAt(i) & 0xFF

  return buf
}

export default (data, filename) => {
  import('xlsx').then(XLSX => {
    const wb = new Workbook()
    const ws = XLSX.utils.json_to_sheet(data)

    wb.SheetNames.push('')
    wb.Sheets[''] = ws

    const wbout = XLSX.write(wb, {bookType:'xlsx', bookSST:true, type: 'binary'})


    let url = window.URL.createObjectURL(new Blob([s2ab(wbout)], {type:'application/octet-stream'}))

    download(url, filename || 'relatorio.xlsx')
  })
}

// Para usar execute:
// exportToExcel({ nome: 'Teste', email: 'teste@email.com' });