fastash

#!/usr/bin/env node

var fs = require('fs');
var fasta = require('bionode-fasta');
var crypto = require('crypto');

fasta.obj('proteins.fasta').on('data', function(x) {
  var seq = x.seq
        .replace(/\*/g, '') // remove asterisks (stop codons)
        .toUpperCase();     // enforce case

  var hash = crypto.createHash('md5').update(seq).digest('hex')

  console.log(hash + "\t" + x.id);
});

#!/usr/bin/env node

var crypto = require('crypto')
var through = require('through2')
var fasta = require('bionode-fasta')

fasta.obj('node_modules/bionode-fasta/test/test.fasta')
.pipe(md5())
.pipe(process.stdout)

function md5 () {
  var stream = through.obj(transform)
  return stream
  function transform (obj, enc, next) {
    var seq = obj.seq
    .replace(/\*/g, '') // remove asterisks (stop codons)
    .toUpperCase()     // enforce case
    var hash = crypto.createHash('md5').update(seq).digest('hex')
    this.push(hash + '\t' + obj.id + '\n')
    next()
  }
}