Remove flow (#3350)

* Remove flow types from src

* Finish removing Flow

* Clear out flow-typed, some flow mentions in docs, website flow usage, and some other config

src/createNavigationContainer.js

@@ -1,48 +1,23 @@
-/* @flow */
-
 import React from 'react';
 import { BackHandler, Linking } from './PlatformHelpers';
 import NavigationActions from './NavigationActions';
 import addNavigationHelpers from './addNavigationHelpers';
 import invariant from './utils/invariant';
 
-import type {
-  NavigationAction,
-  NavigationState,
-  NavigationScreenProp,
-  NavigationNavigator,
-  PossiblyDeprecatedNavigationAction,
-  NavigationInitAction,
-  NavigationContainerProps,
-  NavigationContainer,
-} from './TypeDefinition';
-
-type State<NavState> = {
-  nav: ?NavState,
-};
-
 /**
  * Create an HOC that injects the navigation and manages the navigation state
  * in case it's not passed from above.
  * This allows to use e.g. the StackNavigator and TabNavigator as root-level
  * components.
  */
-export default function createNavigationContainer<S: NavigationState, O: {}>(
-  // Let the NavigationNavigator props flowwwww
-  Component: NavigationNavigator<S, O, *>
-): NavigationContainer<S, O, *> {
-  class NavigationContainer extends React.Component<
-    NavigationContainerProps<S, O>,
-    State<S>
-  > {
-    subs: ?{
-      remove: () => void,
-    } = null;
+export default function createNavigationContainer(Component) {
+  class NavigationContainer extends React.Component {
+    subs = null;
 
     static router = Component.router;
     static navigationOptions = null;
 
-    constructor(props: NavigationContainerProps<S, O>) {
+    constructor(props) {
       super(props);
 
       this._validateProps(props);
@@ -54,11 +29,11 @@ export default function createNavigationContainer<S: NavigationState, O: {}>(
       };
     }
 
-    _isStateful(): boolean {
+    _isStateful() {
       return !this.props.navigation;
     }
 
-    _validateProps(props: NavigationContainerProps<S, O>) {
+    _validateProps(props) {
       if (this._isStateful()) {
         return;
       }
@@ -79,7 +54,7 @@ export default function createNavigationContainer<S: NavigationState, O: {}>(
       }
     }
 
-    _urlToPathAndParams(url: string) {
+    _urlToPathAndParams(url) {
       const params = {};
       const delimiter = this.props.uriPrefix || '://';
       let path = url.split(delimiter)[1];
@@ -94,7 +69,7 @@ export default function createNavigationContainer<S: NavigationState, O: {}>(
       };
     }
 
-    _handleOpenURL = ({ url }: { url: string }) => {
+    _handleOpenURL = ({ url }) => {
       const parsedUrl = this._urlToPathAndParams(url);
       if (parsedUrl) {
         const { path, params } = parsedUrl;
@@ -105,11 +80,7 @@ export default function createNavigationContainer<S: NavigationState, O: {}>(
       }
     };
 
-    _onNavigationStateChange(
-      prevNav: NavigationState,
-      nav: NavigationState,
-      action: NavigationAction
-    ) {
+    _onNavigationStateChange(prevNav, nav, action) {
       if (
         typeof this.props.onNavigationStateChange === 'undefined' &&
         this._isStateful() &&
@@ -138,7 +109,7 @@ export default function createNavigationContainer<S: NavigationState, O: {}>(
       }
     }
 
-    componentWillReceiveProps(nextProps: NavigationContainerProps<S, O>) {
+    componentWillReceiveProps(nextProps) {
       this._validateProps(nextProps);
     }
 
@@ -160,9 +131,7 @@ export default function createNavigationContainer<S: NavigationState, O: {}>(
 
       Linking.addEventListener('url', this._handleOpenURL);
 
-      Linking.getInitialURL().then(
-        (url: ?string) => url && this._handleOpenURL({ url })
-      );
+      Linking.getInitialURL().then(url => url && this._handleOpenURL({ url }));
     }
 
     componentWillUnmount() {
@@ -171,9 +140,8 @@ export default function createNavigationContainer<S: NavigationState, O: {}>(
     }
 
     // Per-tick temporary storage for state.nav
-    _nav: ?S;
 
-    dispatch = (inputAction: PossiblyDeprecatedNavigationAction) => {
+    dispatch = inputAction => {
       const action = NavigationActions.mapDeprecatedActionAndWarn(inputAction);
       if (!this._isStateful()) {
         return false;
@@ -193,8 +161,6 @@ export default function createNavigationContainer<S: NavigationState, O: {}>(
       return false;
     };
 
-    _navigation: ?NavigationScreenProp<NavigationState>;
-
     render() {
       let navigation = this.props.navigation;
       if (this._isStateful()) {