Bump to v4.14.0.

isDate.js

@@ -1,17 +1,9 @@
-var isObjectLike = require('./isObjectLike');
+var baseIsDate = require('./_baseIsDate'),
+    baseUnary = require('./_baseUnary'),
+    nodeUtil = require('./_nodeUtil');
 
-/** `Object#toString` result references. */
-var dateTag = '[object Date]';
-
-/** Used for built-in method references. */
-var objectProto = Object.prototype;
-
-/**
- * Used to resolve the
- * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
- * of values.
- */
-var objectToString = objectProto.toString;
+/* Node.js helper references. */
+var nodeIsDate = nodeUtil && nodeUtil.isDate;
 
 /**
  * Checks if `value` is classified as a `Date` object.
@@ -21,8 +13,7 @@ var objectToString = objectProto.toString;
  * @since 0.1.0
  * @category Lang
  * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified,
- *  else `false`.
+ * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
  * @example
  *
  * _.isDate(new Date);
@@ -31,8 +22,6 @@ var objectToString = objectProto.toString;
  * _.isDate('Mon April 23 2012');
  * // => false
  */
-function isDate(value) {
-  return isObjectLike(value) && objectToString.call(value) == dateTag;
-}
+var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;
 
 module.exports = isDate;