diff --git a/src/plugins/navigation/types.tsx b/src/plugins/navigation/types.tsx
new file mode 100644
index 000000000..39cbb62a2
--- /dev/null
+++ b/src/plugins/navigation/types.tsx
@@ -0,0 +1,52 @@
+/**
+ * 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
+ */
+
+export type URI = string;
+
+export type State = {
+  shouldShowSaveBookmarkDialog: boolean;
+  shouldShowURIErrorDialog: boolean;
+  saveBookmarkURI: URI | null;
+  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 | null;
+  uri: URI | null;
+  className: string | null;
+  screenshot: string | null;
+};
+
+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;
+};