meetup-web-mocks/node_modules/history/lib/AsyncUtils.js

Meetup Web Mocks

"use strict";

exports.__esModule = true;
var loopAsync = exports.loopAsync = function loopAsync(turns, work, callback) {
  var currentTurn = 0,
      isDone = false;
  var isSync = false,
      hasNext = false,
      doneArgs = void 0;

  var done = function done() {
    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    isDone = true;

    if (isSync) {
      // Iterate instead of recursing if possible.
      doneArgs = args;
      return;
    }

    callback.apply(undefined, args);
  };

  var next = function next() {
    if (isDone) return;

    hasNext = true;

    if (isSync) return; // Iterate instead of recursing if possible.

    isSync = true;

    while (!isDone && currentTurn < turns && hasNext) {
      hasNext = false;
      work(currentTurn++, next, done);
    }

    isSync = false;

    if (isDone) {
      // This means the loop finished synchronously.
      callback.apply(undefined, doneArgs);
      return;
    }

    if (currentTurn >= turns && hasNext) {
      isDone = true;
      callback();
    }
  };

  next();
};