powercoder23
diff --git a/‎__tests__/Conversion.ts
+11 b/‎__tests__/Conversion.ts
+11
diff --git a/‎dist/immutable.d.ts
+2 b/‎dist/immutable.d.ts
+2
diff --git a/‎dist/immutable.js
+5-1 b/‎dist/immutable.js
+5-1
@@ -140,6 +140,17 @@ describe('Conversion', () => {
     expect(JSON.stringify(js)).toBe(JSON.stringify(immutableData));
   });
 
+  it('JSON.stringify() respects toJSON methods on values', () => {
+    var Model = Immutable.Record({});
+    Model.prototype.toJSON = function() { return 'model'; }
+    expect(
+      Immutable.Map({ a: new Model() }).toJS()
+    ).toEqual({ "a": {} });
+    expect(
+      JSON.stringify(Immutable.Map({ a: new Model() }))
+    ).toEqual('{"a":"model"}');
+  });
+
   it('is conservative with array-likes, only accepting true Arrays.', () => {
     expect(Immutable.fromJS({1: 2, length: 3})).is(
       Immutable.Map().set('1', 2).set('length', 3)
 
@@ -1420,6 +1420,8 @@ declare module 'immutable' {
      *
      * `IndexedIterables`, and `SetIterables` become Arrays, while
      * `KeyedIterables` become Objects.
+     *
+     * @alias toJSON
      */
     toJS(): any;
 
 
@@ -3357,6 +3357,11 @@ $traceurRuntime.defaultSuperCall = defaultSuperCall;
         return value && typeof value.toJS === 'function' ? value.toJS() : value;
       })).__toJS();
     },
+    toJSON: function() {
+      return this.toSeq().map((function(value) {
+        return value && typeof value.toJSON === 'function' ? value.toJSON() : value;
+      })).__toJS();
+    },
     toKeyedSeq: function() {
       return new ToKeyedSequence(this, true);
     },
@@ -3638,7 +3643,6 @@ $traceurRuntime.defaultSuperCall = defaultSuperCall;
   var IterablePrototype = Iterable.prototype;
   IterablePrototype[IS_ITERABLE_SENTINEL] = true;
   IterablePrototype[ITERATOR_SYMBOL] = IterablePrototype.values;
-  IterablePrototype.toJSON = IterablePrototype.toJS;
   IterablePrototype.__toJS = IterablePrototype.toArray;
   IterablePrototype.__toStringMapper = quoteString;
   IterablePrototype.inspect = IterablePrototype.toSource = function() {
Original file line number	Diff line number	Diff line change
`@@ -1420,6 +1420,8 @@ declare module 'immutable' {`
`1420`	`1420`	`*`
`1421`	`1421`	* `IndexedIterables`, and `SetIterables` become Arrays, while
`1422`	`1422`	* `KeyedIterables` become Objects.
	`1423`	`+ *`
	`1424`	`+ * @alias toJSON`
`1423`	`1425`	`*/`
`1424`	`1426`	`toJS(): any;`
`1425`	`1427`