Bump to v3.4.0.

internal/indexOfNaN.js

@@ -4,13 +4,13 @@
  *
  * @private
  * @param {Array} array The array to search.
- * @param {number} [fromIndex] The index to search from.
+ * @param {number} fromIndex The index to search from.
  * @param {boolean} [fromRight] Specify iterating from right to left.
  * @returns {number} Returns the index of the matched `NaN`, else `-1`.
  */
 function indexOfNaN(array, fromIndex, fromRight) {
   var length = array.length,
-      index = fromRight ? (fromIndex || length) : ((fromIndex || 0) - 1);
+      index = fromIndex + (fromRight ? 0 : -1);
 
   while ((fromRight ? index-- : ++index < length)) {
     var other = array[index];