66 lines
1.7 KiB
JavaScript
66 lines
1.7 KiB
JavaScript
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'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = function () /*...values*/{
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var values = (0, _slice2.default)(arguments);
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var args = [null].concat(values);
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return function () /*...ignoredArgs, callback*/{
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var callback = arguments[arguments.length - 1];
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return callback.apply(this, args);
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};
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};
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var _slice = require('./internal/slice');
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var _slice2 = _interopRequireDefault(_slice);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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;
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/**
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* Returns a function that when called, calls-back with the values provided.
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* Useful as the first function in a [`waterfall`]{@link module:ControlFlow.waterfall}, or for plugging values in to
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* [`auto`]{@link module:ControlFlow.auto}.
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*
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* @name constant
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* @static
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* @memberOf module:Utils
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* @method
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* @category Util
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* @param {...*} arguments... - Any number of arguments to automatically invoke
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* callback with.
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* @returns {AsyncFunction} Returns a function that when invoked, automatically
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* invokes the callback with the previous given arguments.
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* @example
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*
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* async.waterfall([
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* async.constant(42),
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* function (value, next) {
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* // value === 42
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* },
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* //...
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* ], callback);
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*
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* async.waterfall([
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* async.constant(filename, "utf8"),
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* fs.readFile,
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* function (fileData, next) {
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* //...
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* }
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* //...
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* ], callback);
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*
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* async.auto({
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* hostname: async.constant("https://server.net/"),
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* port: findFreePort,
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* launchServer: ["hostname", "port", function (options, cb) {
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* startServer(options, cb);
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* }],
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* //...
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* }, callback);
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*/
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module.exports = exports['default'];
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