From 8328afe0bbe24ba29339409b2ab8bb4bf0010d58 Mon Sep 17 00:00:00 2001
From: Kamil Wojcik <movieman01@gmail.com>
Date: Tue, 16 Oct 2018 17:47:41 +0200
Subject: [PATCH] bugfix (redux-form) Add missing parameter to onChange method
 (#29636)

* - [redux-form] add missing parameter to onChange function

* - test added

* - fix tests
---
 types/redux-form/index.d.ts           | 1 +
 types/redux-form/lib/reduxForm.d.ts   | 2 +-
 types/redux-form/redux-form-tests.tsx | 8 ++++++++
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/types/redux-form/index.d.ts b/types/redux-form/index.d.ts
index bbddfbd744..dd5572cac0 100644
--- a/types/redux-form/index.d.ts
+++ b/types/redux-form/index.d.ts
@@ -10,6 +10,7 @@
 //                 Ethan Resnick <https://github.com/ethanresnick>
 //                 Tim de Koning <https://github.com/reggino>
 //                 Maddi Joyce <https://github.com/maddijoyce>
+//                 Kamil Wojcik <https://github.com/smifun>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.8
 import {
diff --git a/types/redux-form/lib/reduxForm.d.ts b/types/redux-form/lib/reduxForm.d.ts
index 5d0d90d7b8..e37214f5d0 100644
--- a/types/redux-form/lib/reduxForm.d.ts
+++ b/types/redux-form/lib/reduxForm.d.ts
@@ -111,7 +111,7 @@ export interface ConfigProps<FormData = {}, P = {}, ErrorType = string> {
     initialValues?: Partial<FormData>;
     keepDirtyOnReinitialize?: boolean;
     updateUnregisteredFields?: boolean;
-    onChange?(values: Partial<FormData>, dispatch: Dispatch<any>, props: P & InjectedFormProps<FormData, P, ErrorType>): void;
+    onChange?(values: Partial<FormData>, dispatch: Dispatch<any>, props: P & InjectedFormProps<FormData, P, ErrorType>, previousValues: Partial<FormData>): void;
     onSubmit?: FormSubmitHandler<FormData, P & InjectedFormProps<FormData, P, ErrorType>, ErrorType> | SubmitHandler<FormData, P & InjectedFormProps<FormData, P, ErrorType>, ErrorType>;
     onSubmitFail?(
         errors: FormErrors<FormData, ErrorType> | undefined,
diff --git a/types/redux-form/redux-form-tests.tsx b/types/redux-form/redux-form-tests.tsx
index 3d177a7a8f..fc6e97fb6a 100644
--- a/types/redux-form/redux-form-tests.tsx
+++ b/types/redux-form/redux-form-tests.tsx
@@ -231,6 +231,14 @@ const testFormWithInitialValuesAndValidationDecorator = reduxForm<MultivalueForm
     }
 });
 
+const testFormWithChangeFunctionDecorator = reduxForm<TestFormData, TestFormComponentProps>({
+    form: "testWithValidation",
+    onChange: (values: Partial<TestFormData>,
+        dispatch: Dispatch<any>,
+        props: TestFormComponentProps & InjectedFormProps<TestFormData, TestFormComponentProps>,
+        previousValues: Partial<TestFormData>) => {}
+});
+
 type TestProps = {} & InjectedFormProps<TestFormData>;
 const Test = reduxForm<TestFormData>({
     form : "test"