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[yaffs-website] / node_modules / grunt-legacy-log-utils / node_modules / lodash / throttle.js

diff --git a/node_modules/grunt-legacy-log-utils/node_modules/lodash/throttle.js b/node_modules/grunt-legacy-log-utils/node_modules/lodash/throttle.js
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+var debounce = require('./debounce'),
+    isObject = require('./isObject');
+
+/** Used as the `TypeError` message for "Functions" methods. */
+var FUNC_ERROR_TEXT = 'Expected a function';
+
+/**
+ * Creates a throttled function that only invokes `func` at most once per
+ * every `wait` milliseconds. The throttled function comes with a `cancel`
+ * method to cancel delayed `func` invocations and a `flush` method to
+ * immediately invoke them. Provide an options object to indicate whether
+ * `func` should be invoked on the leading and/or trailing edge of the `wait`
+ * timeout. The `func` is invoked with the last arguments provided to the
+ * throttled function. Subsequent calls to the throttled function return the
+ * result of the last `func` invocation.
+ *
+ * **Note:** If `leading` and `trailing` options are `true`, `func` is invoked
+ * on the trailing edge of the timeout only if the throttled function is
+ * invoked more than once during the `wait` timeout.
+ *
+ * See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation)
+ * for details over the differences between `_.throttle` and `_.debounce`.
+ *
+ * @static
+ * @memberOf _
+ * @category Function
+ * @param {Function} func The function to throttle.
+ * @param {number} [wait=0] The number of milliseconds to throttle invocations to.
+ * @param {Object} [options] The options object.
+ * @param {boolean} [options.leading=true] Specify invoking on the leading
+ *  edge of the timeout.
+ * @param {boolean} [options.trailing=true] Specify invoking on the trailing
+ *  edge of the timeout.
+ * @returns {Function} Returns the new throttled function.
+ * @example
+ *
+ * // Avoid excessively updating the position while scrolling.
+ * jQuery(window).on('scroll', _.throttle(updatePosition, 100));
+ *
+ * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
+ * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
+ * jQuery(element).on('click', throttled);
+ *
+ * // Cancel the trailing throttled invocation.
+ * jQuery(window).on('popstate', throttled.cancel);
+ */
+function throttle(func, wait, options) {
+  var leading = true,
+      trailing = true;
+
+  if (typeof func != 'function') {
+    throw new TypeError(FUNC_ERROR_TEXT);
+  }
+  if (isObject(options)) {
+    leading = 'leading' in options ? !!options.leading : leading;
+    trailing = 'trailing' in options ? !!options.trailing : trailing;
+  }
+  return debounce(func, wait, { 'leading': leading, 'maxWait': wait, 'trailing': trailing });
+}
+
+module.exports = throttle;