[redux-form] Added an optional "forceUnregisterOnUnmount" property to the

"reduxForm()" "Config" interface, as it is present in the redux-form API.

redux-form/lib/reduxForm.d.ts

@@ -65,6 +65,12 @@ export interface Config<FormData extends DataShape, P, S> {
      */
     destroyOnUnmount?: boolean;
 
+    /**
+     * Whether or not to force unregistration of fields -- use in conjunction
+     * with destroyOnUnmount.
+     */
+    forceUnregisterOnUnmount?: boolean;
+
     /**
      * A function that takes the entire Redux state and returns the state slice
      * which corresponds to where the redux-form reducer was mounted. This

redux-form/redux-form-tests.tsx

@@ -56,3 +56,22 @@ const MyStatelessFunctionalComponent: React.SFC<void> = () => <div/>;
 reduxForm({
     form: 'mySFCForm'
 })(MyStatelessFunctionalComponent);
+
+class MyReusableForm extends Component<void, undefined> {
+    render() {
+        return (
+            <div>
+                <Field
+                    name='foo'
+                    component='input'
+                    placeholder='Foo bar'
+                />
+            </div>
+        );
+    }
+}
+
+reduxForm({
+    form: 'forceUnregisterOnMountForm',
+    forceUnregisterOnUnmount: true
+});