dynatrace-cordova-outsystems-plugin/node_modules/asynckit/lib/iterate.js

This plugin gives you the ability to use the Dynatrace instrumentation in your hybrid application (Cordova, Ionic, ..). It uses the Mobile Agent, the JavaScript Agent and the Javascript Bridge. The Mobile Agent will give you all device specific values con

var async = require('./async.js')
  , abort = require('./abort.js')
  ;

// API
module.exports = iterate;

/**
 * Iterates over each job object
 *
 * @param {array|object} list - array or object (named list) to iterate over
 * @param {function} iterator - iterator to run
 * @param {object} state - current job status
 * @param {function} callback - invoked when all elements processed
 */
function iterate(list, iterator, state, callback)
{
  // store current index
  var key = state['keyedList'] ? state['keyedList'][state.index] : state.index;

  state.jobs[key] = runJob(iterator, key, list[key], function(error, output)
  {
    // don't repeat yourself
    // skip secondary callbacks
    if (!(key in state.jobs))
    {
      return;
    }

    // clean up jobs
    delete state.jobs[key];

    if (error)
    {
      // don't process rest of the results
      // stop still active jobs
      // and reset the list
      abort(state);
    }
    else
    {
      state.results[key] = output;
    }

    // return salvaged results
    callback(error, state.results);
  });
}

/**
 * Runs iterator over provided job element
 *
 * @param   {function} iterator - iterator to invoke
 * @param   {string|number} key - key/index of the element in the list of jobs
 * @param   {mixed} item - job description
 * @param   {function} callback - invoked after iterator is done with the job
 * @returns {function|mixed} - job abort function or something else
 */
function runJob(iterator, key, item, callback)
{
  var aborter;

  // allow shortcut if iterator expects only two arguments
  if (iterator.length == 2)
  {
    aborter = iterator(item, async(callback));
  }
  // otherwise go with full three arguments
  else
  {
    aborter = iterator(item, key, async(callback));
  }

  return aborter;
}