futoin-asyncsteps/es5/lib/main.js

Mimic traditional threads in single threaded event loop

"use strict";

/**
 * @file Module's entry point and AsyncSteps class itself
 * @author Andrey Galkin <andrey@futoin.org>
 *
 *
 * Copyright 2014-2017 FutoIn Project (https://futoin.org)
 * Copyright 2014-2017 Andrey Galkin <andrey@futoin.org>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @module futoin-asyncsteps
 */
var AsyncTool = require('./AsyncTool');
var AsyncToolTest = require('./AsyncToolTest');
var Errors = require('../Errors');
var AsyncSteps = require('../AsyncSteps');
var _require = require('./common'),
  isProduction = _require.isProduction;

/**
 * @private
 * @returns {AsyncSteps} new instance
 */
exports = module.exports = function () {
  return new AsyncSteps(null, exports.ActiveAsyncTool);
};
exports.ActiveAsyncTool = AsyncTool;
exports.AsyncTool = AsyncTool;
exports.AsyncToolTest = AsyncToolTest;
exports.FutoInError = Errors;
exports.Errors = Errors;
exports.AsyncSteps = AsyncSteps;
exports.isProduction = isProduction;

/**
 * Use for unit testing to fine control step execution.
 * It installs AsyncToolTest in place of AsyncTool
 * @alias installAsyncToolTest
 * @param {boolean} [install] - true - install AsyncToolTest, false - AsyncTool as scheduler
 */
exports.installAsyncToolTest = function (install) {
  if (install === false) {
    exports.ActiveAsyncTool = AsyncTool;
  } else {
    exports.ActiveAsyncTool = AsyncToolTest;
  }
};

/**
 * Ensure parameter is instance of AsyncSteps interfaces
 * @param {any} as - paramter to check
 * @alias assertAS
 */
exports.assertAS = function (as) {
  try {
    if (as.isAsyncSteps()) {
      return;
    }
  } catch (_unused) {
    // pass
  }
  throw new Error("Not an instance of AsyncSteps: ".concat(as));
};
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