Version 1

[yaffs-website] / node_modules / uncss / node_modules / form-data / node_modules / async / timeout.js

diff --git a/node_modules/uncss/node_modules/form-data/node_modules/async/timeout.js b/node_modules/uncss/node_modules/form-data/node_modules/async/timeout.js
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+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = timeout;
+
+var _initialParams = require('./internal/initialParams');
+
+var _initialParams2 = _interopRequireDefault(_initialParams);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * Sets a time limit on an asynchronous function. If the function does not call
+ * its callback within the specified milliseconds, it will be called with a
+ * timeout error. The code property for the error object will be `'ETIMEDOUT'`.
+ *
+ * @name timeout
+ * @static
+ * @memberOf module:Utils
+ * @method
+ * @category Util
+ * @param {Function} asyncFn - The asynchronous function you want to set the
+ * time limit.
+ * @param {number} milliseconds - The specified time limit.
+ * @param {*} [info] - Any variable you want attached (`string`, `object`, etc)
+ * to timeout Error for more information..
+ * @returns {Function} Returns a wrapped function that can be used with any of
+ * the control flow functions. Invoke this function with the same
+ * parameters as you would `asyncFunc`.
+ * @example
+ *
+ * function myFunction(foo, callback) {
+ *     doAsyncTask(foo, function(err, data) {
+ *         // handle errors
+ *         if (err) return callback(err);
+ *
+ *         // do some stuff ...
+ *
+ *         // return processed data
+ *         return callback(null, data);
+ *     });
+ * }
+ *
+ * var wrapped = async.timeout(myFunction, 1000);
+ *
+ * // call `wrapped` as you would `myFunction`
+ * wrapped({ bar: 'bar' }, function(err, data) {
+ *     // if `myFunction` takes < 1000 ms to execute, `err`
+ *     // and `data` will have their expected values
+ *
+ *     // else `err` will be an Error with the code 'ETIMEDOUT'
+ * });
+ */
+function timeout(asyncFn, milliseconds, info) {
+    var originalCallback, timer;
+    var timedOut = false;
+
+    function injectedCallback() {
+        if (!timedOut) {
+            originalCallback.apply(null, arguments);
+            clearTimeout(timer);
+        }
+    }
+
+    function timeoutCallback() {
+        var name = asyncFn.name || 'anonymous';
+        var error = new Error('Callback function "' + name + '" timed out.');
+        error.code = 'ETIMEDOUT';
+        if (info) {
+            error.info = info;
+        }
+        timedOut = true;
+        originalCallback(error);
+    }
+
+    return (0, _initialParams2.default)(function (args, origCallback) {
+        originalCallback = origCallback;
+        // setup timer and call original function
+        timer = setTimeout(timeoutCallback, milliseconds);
+        asyncFn.apply(null, args.concat(injectedCallback));
+    });
+}
+module.exports = exports['default'];
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