Add a repl to Node v0.6 or v0.8

replify.js

var fs = require("fs")
  , net = require("net")
  , repl = require("repl")

module.exports = function replify (name, ctx) {
  var repl_path = "/tmp/" + name + ".sock"
  ctx || (ctx = {})

  fs.unlink(repl_path, function () {
    // intentionally not listening for the error. either way, we're good.

    net.createServer(function repl_onrequest(socket) {
      var repl_opt = {
              prompt: name + "> "
            , input: socket
            , output: socket
            , terminal: true
            , useGlobal: false
          },
          r = null

      socket.columns = 132 // Set screen width for autocomplete. You can modify this locally in your repl.

      if (fs.exists) { // if `fs.exists` exists, then it's node v0.8
        r = repl.start(repl_opt)
        r.on('exit', function () {
          socket.end()
        })
      } else {
        r = repl.start(repl_opt.prompt, socket)
      }

      r.context.socket = socket
      Object.keys(ctx).forEach(function (key) {
        // don't pave me, bro!
        if (!r.context[key]) r.context[key] = ctx[key]
      })
    }).listen(repl_path)
  })
}