async-shim.js

var compat = require('./browser')

process.on('message', function (m) {
  try {
    var result = compat.pbkdf2Sync(new Buffer(m.password, 'hex'), new Buffer(m.salt, 'hex'), m.iterations, m.keylen, m.digest)

    process.send({
      data: result.toString('hex'),
      type: 'success'
    })
  } catch (e) {
    process.send({
      data: e && e.message,
      type: 'fail'
    })
  } finally {
    process.exit()
  }
})