프로젝트

일반

사용자정보

통계
| 개정판:

root / HServer / 00.Server / 00.Program / node_modules / async / compose.js

이력 | 보기 | 이력해설 | 다운로드 (1.5 KB)

1
'use strict';
2

    
3
Object.defineProperty(exports, "__esModule", {
4
  value: true
5
});
6

    
7
var _seq = require('./seq');
8

    
9
var _seq2 = _interopRequireDefault(_seq);
10

    
11
var _rest = require('./internal/rest');
12

    
13
var _rest2 = _interopRequireDefault(_rest);
14

    
15
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
16

    
17
/**
18
 * Creates a function which is a composition of the passed asynchronous
19
 * functions. Each function consumes the return value of the function that
20
 * follows. Composing functions `f()`, `g()`, and `h()` would produce the result
21
 * of `f(g(h()))`, only this version uses callbacks to obtain the return values.
22
 *
23
 * Each function is executed with the `this` binding of the composed function.
24
 *
25
 * @name compose
26
 * @static
27
 * @memberOf module:ControlFlow
28
 * @method
29
 * @category Control Flow
30
 * @param {...Function} functions - the asynchronous functions to compose
31
 * @returns {Function} an asynchronous function that is the composed
32
 * asynchronous `functions`
33
 * @example
34
 *
35
 * function add1(n, callback) {
36
 *     setTimeout(function () {
37
 *         callback(null, n + 1);
38
 *     }, 10);
39
 * }
40
 *
41
 * function mul3(n, callback) {
42
 *     setTimeout(function () {
43
 *         callback(null, n * 3);
44
 *     }, 10);
45
 * }
46
 *
47
 * var add1mul3 = async.compose(mul3, add1);
48
 * add1mul3(4, function (err, result) {
49
 *     // result now equals 15
50
 * });
51
 */
52
exports.default = (0, _rest2.default)(function (args) {
53
  return _seq2.default.apply(null, args.reverse());
54
});
55
module.exports = exports['default'];