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Diffstat (limited to 'node_modules/async/compose.js')
-rw-r--r-- | node_modules/async/compose.js | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/node_modules/async/compose.js b/node_modules/async/compose.js new file mode 100644 index 000000000..499316f8c --- /dev/null +++ b/node_modules/async/compose.js @@ -0,0 +1,55 @@ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); + +var _seq = require('./seq'); + +var _seq2 = _interopRequireDefault(_seq); + +var _rest = require('lodash/rest'); + +var _rest2 = _interopRequireDefault(_rest); + +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 {...Function} 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 + * }); + */ +exports.default = (0, _rest2.default)(function (args) { + return _seq2.default.apply(null, args.reverse()); +}); +module.exports = exports['default'];
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