promise-useful-utils/lib/timers.js

useful functions for working with promises

'use strict';

var _Promise = require('babel-runtime/core-js/promise')['default'];

Object.defineProperty(exports, '__esModule', {
  value: true
});
exports.delay = delay;
exports.timeout = timeout;

var _errors = require('./errors');

/**
 * @param {number} ms
 * @param {*} value
 * @return {Promise.<*>}
 */

function delay(ms, value) {
  return _Promise.resolve(value).then(function (result) {
    return new _Promise(function (resolve) {
      setTimeout(function () {
        resolve(result);
      }, ms);
    });
  });
}

var sleep = delay;

exports.sleep = sleep;
/**
 * @param {number} ms
 * @param {Error} [err]
 * @return {Promise}
 */

function timeout(ms, err) {
  return new _Promise(function (resolve, reject) {
    setTimeout(function () {
      if (err === undefined) {
        err = new _errors.TimeoutError('timeout error');
      }

      reject(err);
    }, ms);
  });
}