Bump to v3.0.0.

array/findLastIndex.js

@@ -0,0 +1,53 @@
+import baseCallback from '../internal/baseCallback';
+
+/**
+ * This method is like `_.findIndex` except that it iterates over elements
+ * of `collection` from right to left.
+ *
+ * If a property name is provided for `predicate` the created "_.property"
+ * style callback returns the property value of the given element.
+ *
+ * If an object is provided for `predicate` the created "_.matches" style
+ * callback returns `true` for elements that have the properties of the given
+ * object, else `false`.
+ *
+ * @static
+ * @memberOf _
+ * @category Array
+ * @param {Array} array The array to search.
+ * @param {Function|Object|string} [predicate=_.identity] The function invoked
+ *  per iteration. If a property name or object is provided it is used to
+ *  create a "_.property" or "_.matches" style callback respectively.
+ * @param {*} [thisArg] The `this` binding of `predicate`.
+ * @returns {number} Returns the index of the found element, else `-1`.
+ * @example
+ *
+ * var users = [
+ *   { 'user': 'barney',  'age': 36, 'active': true },
+ *   { 'user': 'fred',    'age': 40, 'active': false },
+ *   { 'user': 'pebbles', 'age': 1,  'active': false }
+ * ];
+ *
+ * _.findLastIndex(users, function(chr) { return chr.age < 40; });
+ * // => 2
+ *
+ * // using the "_.matches" callback shorthand
+ * _.findLastIndex(users, { 'age': 40 });
+ * // => 1
+ *
+ * // using the "_.property" callback shorthand
+ * _.findLastIndex(users, 'active');
+ * // => 0
+ */
+function findLastIndex(array, predicate, thisArg) {
+  var length = array ? array.length : 0;
+  predicate = baseCallback(predicate, thisArg, 3);
+  while (length--) {
+    if (predicate(array[length], length, array)) {
+      return length;
+    }
+  }
+  return -1;
+}
+
+export default findLastIndex;