simple re-loadable configuration using JS modules

config-loader.js

inspect = require('util').inspect

module.exports = function (config_path, opts) {
  var settings = {
    toJSON: function() { return this.__proto__ },
    inspect: function() { return inspect(this.__proto__) },
  }
  
  opts || (opts = {})
  if (!opts.error) {
    opts.error = function(err){
      console.error("Error reloading %s: %s", config_path, err)
    }
  }
  function reload() {
    delete require.cache[require.resolve(config_path)]
    try { settings.__proto__ = require(config_path) }
    catch (err) { opts.error(err) }
  }

  if (opts.signal) {
    process.on(opts.signal, reload)
  }

  reload()
  return settings
}; // sad wink