diff --git a/src/chrome/LocationsButton.tsx b/src/chrome/LocationsButton.tsx
index e84d32c25..43b771a75 100644
--- a/src/chrome/LocationsButton.tsx
+++ b/src/chrome/LocationsButton.tsx
@@ -10,7 +10,7 @@ import {connect} from 'react-redux';
 import React, {Component} from 'react';
 import {State as Store} from '../reducers';
 import {readBookmarksFromDB} from '../plugins/navigation/util/indexedDB';
-import {State as NavPluginState} from '../plugins/navigation/flow-types';
+import {PersistedState as NavPluginState} from '../plugins/navigation/types';
 import BaseDevice from '../devices/BaseDevice';
 import {State as PluginState} from 'src/reducers/pluginStates';
 
@@ -109,10 +109,9 @@ class LocationsButton extends Component<Props, State> {
 }
 
 const mapStateFromPluginStatesToProps = (pluginStates: PluginState) => {
-  const navPluginState: NavPluginState =
-    pluginStates[
-      Object.keys(pluginStates).find(key => /#Navigation$/.test(key))
-    ];
+  const navPluginState = pluginStates[
+    Object.keys(pluginStates).find(key => /#Navigation$/.test(key))
+  ] as (NavPluginState | null);
   const currentURI = navPluginState && navPluginState.currentURI;
   return {
     currentURI,
diff --git a/src/plugins/navigation/flow-types.js b/src/plugins/navigation/flow-types.js
deleted file mode 100644
index 47f8418d3..000000000
--- a/src/plugins/navigation/flow-types.js
+++ /dev/null
@@ -1,53 +0,0 @@
-/**
- * Copyright 2018-present Facebook.
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- * @format
- * @flow strict-local
- */
-
-export type URI = string;
-
-export type State = {|
-  shouldShowSaveBookmarkDialog: boolean,
-  shouldShowURIErrorDialog: boolean,
-  saveBookmarkURI: ?URI,
-  requiredParameters: Array<string>,
-|};
-
-export type PersistedState = {|
-  bookmarks: Map<URI, Bookmark>,
-  navigationEvents: Array<NavigationEvent>,
-  bookmarksProvider: AutoCompleteProvider,
-  appMatchPatterns: Array<AppMatchPattern>,
-  appMatchPatternsProvider: AutoCompleteProvider,
-  currentURI: string,
-|};
-
-export type NavigationEvent = {|
-  date: ?Date,
-  uri: ?URI,
-  className: ?string,
-  screenshot: ?string,
-|};
-
-export type Bookmark = {|
-  uri: URI,
-  commonName: string,
-|};
-
-export type AutoCompleteProvider = {|
-  icon: string,
-  matchPatterns: Map<string, URI>,
-|};
-
-export type AutoCompleteLineItem = {|
-  icon: string,
-  matchPattern: string,
-  uri: URI,
-|};
-
-export type AppMatchPattern = {|
-  className: string,
-  pattern: string,
-|};