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node_modules/async/compose.js 1.52 KB
f7563de62   Palak Handa   first commit
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  'use strict';
  
  Object.defineProperty(exports, "__esModule", {
    value: true
  });
  
  exports.default = function () /*...args*/{
    return _seq2.default.apply(null, (0, _slice2.default)(arguments).reverse());
  };
  
  var _seq = require('./seq');
  
  var _seq2 = _interopRequireDefault(_seq);
  
  var _slice = require('./internal/slice');
  
  var _slice2 = _interopRequireDefault(_slice);
  
  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  ;
  
  /**
   * Creates a function which is a composition of the passed asynchronous
   * functions. Each function consumes the return value of the function that
   * follows. Composing functions `f()`, `g()`, and `h()` would produce the result
   * of `f(g(h()))`, only this version uses callbacks to obtain the return values.
   *
   * Each function is executed with the `this` binding of the composed function.
   *
   * @name compose
   * @static
   * @memberOf module:ControlFlow
   * @method
   * @category Control Flow
   * @param {...AsyncFunction} functions - the asynchronous functions to compose
   * @returns {Function} an asynchronous function that is the composed
   * asynchronous `functions`
   * @example
   *
   * function add1(n, callback) {
   *     setTimeout(function () {
   *         callback(null, n + 1);
   *     }, 10);
   * }
   *
   * function mul3(n, callback) {
   *     setTimeout(function () {
   *         callback(null, n * 3);
   *     }, 10);
   * }
   *
   * var add1mul3 = async.compose(mul3, add1);
   * add1mul3(4, function (err, result) {
   *     // result now equals 15
   * });
   */
  module.exports = exports['default'];