Bump to v4.17.5.

invert.js

@@ -1,5 +1,15 @@
 define(['./constant', './_createInverter', './identity'], function(constant, createInverter, identity) {
 
+  /** Used for built-in method references. */
+  var objectProto = Object.prototype;
+
+  /**
+   * Used to resolve the
+   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
+   * of values.
+   */
+  var nativeObjectToString = objectProto.toString;
+
   /**
    * Creates an object composed of the inverted keys and values of `object`.
    * If `object` contains duplicate values, subsequent values overwrite
@@ -19,6 +29,11 @@ define(['./constant', './_createInverter', './identity'], function(constant, cre
    * // => { '1': 'c', '2': 'b' }
    */
   var invert = createInverter(function(result, value, key) {
+    if (value != null &&
+        typeof value.toString != 'function') {
+      value = nativeObjectToString.call(value);
+    }
+
     result[value] = key;
   }, constant(identity));