example.mjs

import biomsa from 'biomsa'
import fetch from 'node-fetch'

const sequence = async (id) => {
  const params = new URLSearchParams({
    db: 'nuccore',
    retmode: 'text',
    rettype: 'fasta',
    id,
  })
  const url =
    'http://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?' + params
  const response = await fetch(url)
  const text = await response.text()

  return text.split('\n').slice(1).join('')
}

const sequences = [
  await sequence('383081734'),
  await sequence('12175745'),
  await sequence('1842094200'),
]

const result = await biomsa.align(sequences)
console.log(result)