Bump to v3.0.0.

function/before.js

@@ -0,0 +1,44 @@
+define(['../lang/isFunction'], function(isFunction) {
+
+  /** Used as the `TypeError` message for "Functions" methods. */
+  var FUNC_ERROR_TEXT = 'Expected a function';
+
+  /**
+   * Creates a function that invokes `func`, with the `this` binding and arguments
+   * of the created function, while it is called less than `n` times. Subsequent
+   * calls to the created function return the result of the last `func` invocation.
+   *
+   * @static
+   * @memberOf _
+   * @category Function
+   * @param {number} n The number of calls at which `func` is no longer invoked.
+   * @param {Function} func The function to restrict.
+   * @returns {Function} Returns the new restricted function.
+   * @example
+   *
+   * jQuery('#add').on('click', _.before(5, addContactToList));
+   * // => allows adding up to 4 contacts to the list
+   */
+  function before(n, func) {
+    var result;
+    if (!isFunction(func)) {
+      if (isFunction(n)) {
+        var temp = n;
+        n = func;
+        func = temp;
+      } else {
+        throw new TypeError(FUNC_ERROR_TEXT);
+      }
+    }
+    return function() {
+      if (--n > 0) {
+        result = func.apply(this, arguments);
+      } else {
+        func = null;
+      }
+      return result;
+    };
+  }
+
+  return before;
+});