lib/readable_parallel.js
function ReadableParallel(list, iterator, callback)
{
  if (!(this instanceof ReadableParallel))
  {
    return new ReadableParallel(list, iterator, callback);
  }

  // turn on object mode
  ReadableParallel.super_.call(this, {objectMode: true});

  this._start(parallel, list, iterator, callback);
}
function ReadableParallel(list, iterator, callback)
{
  if (!(this instanceof ReadableParallel))
  {
    return new ReadableParallel(list, iterator, callback);
  }

  // turn on object mode
  ReadableParallel.super_.call(this, {objectMode: true});

  this._start(parallel, list, iterator, callback);
}
function ReadableParallel ( list , iterator , callback ) { if ( ! ( this instanceof ReadableParallel ) ) { return new ReadableParallel ( list , iterator , callback ) ; } // turn on object mode ReadableParallel . super_ . call ( this , { objectMode : true } ) ; this . _start ( parallel , list , iterator , callback ) ; }
Streaming wrapper to `asynckit.parallel`

@param   {array|object} list - array or object (named list) to iterate over
@param   {function} iterator - iterator to run
@param   {function} callback - invoked when all elements processed
@returns {stream.Readable#}
Streaming wrapper to asynckit . parallel