root / HServer / 00.Server / 00.Program / node_modules / async / compose.js
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1 | 39 | HKM | 'use strict';
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3 | Object.defineProperty(exports, "__esModule", {
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4 | value: true |
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5 | }); |
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6 | |||
7 | var _seq = require('./seq'); |
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8 | |||
9 | var _seq2 = _interopRequireDefault(_seq);
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11 | var _rest = require('./internal/rest'); |
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13 | var _rest2 = _interopRequireDefault(_rest);
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15 | function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } |
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16 | |||
17 | /**
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18 | * Creates a function which is a composition of the passed asynchronous
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19 | * functions. Each function consumes the return value of the function that
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20 | * follows. Composing functions `f()`, `g()`, and `h()` would produce the result
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21 | * of `f(g(h()))`, only this version uses callbacks to obtain the return values.
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22 | *
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23 | * Each function is executed with the `this` binding of the composed function.
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24 | *
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25 | * @name compose
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26 | * @static
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27 | * @memberOf module:ControlFlow
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28 | * @method
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29 | * @category Control Flow
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30 | * @param {...Function} functions - the asynchronous functions to compose
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31 | * @returns {Function} an asynchronous function that is the composed
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32 | * asynchronous `functions`
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33 | * @example
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34 | *
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35 | * function add1(n, callback) {
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36 | * setTimeout(function () {
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37 | * callback(null, n + 1);
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38 | * }, 10);
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39 | * }
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40 | *
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41 | * function mul3(n, callback) {
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42 | * setTimeout(function () {
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43 | * callback(null, n * 3);
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44 | * }, 10);
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45 | * }
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46 | *
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47 | * var add1mul3 = async.compose(mul3, add1);
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48 | * add1mul3(4, function (err, result) {
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49 | * // result now equals 15
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50 | * });
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51 | */
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52 | exports.default = (0, _rest2.default)(function (args) { |
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53 | return _seq2.default.apply(null, args.reverse()); |
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54 | }); |
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55 | module.exports = exports['default']; |