diff --git a/packages/analytics-util-storage/.gitignore b/packages/analytics-util-storage/.gitignore
index 91c6c1a0..1658d286 100644
--- a/packages/analytics-util-storage/.gitignore
+++ b/packages/analytics-util-storage/.gitignore
@@ -10,3 +10,4 @@ node_modules
 # OS stuff
 .DS_Store
 .tmp
+!types/
diff --git a/packages/analytics-util-storage/package.json b/packages/analytics-util-storage/package.json
index af6b5960..1e351773 100644
--- a/packages/analytics-util-storage/package.json
+++ b/packages/analytics-util-storage/package.json
@@ -21,6 +21,7 @@
   "source": "src/index.js",
   "main": "dist/analytics-util-storage.js",
   "module": "dist/analytics-util-storage.module.js",
+  "types": "types/analytics-util-storage.d.ts",
   "unpkg": "dist/analytics-util-storage.umd.js",
   "sideEffects": false,
   "scripts": {
@@ -44,6 +45,7 @@
   "files": [
     "lib",
     "dist",
+    "types",
     "package.json",
     "package-lock.json",
     "README.md"
diff --git a/packages/analytics-util-storage/types/analytics-util-storage.d.ts b/packages/analytics-util-storage/types/analytics-util-storage.d.ts
new file mode 100644
index 00000000..9627039e
--- /dev/null
+++ b/packages/analytics-util-storage/types/analytics-util-storage.d.ts
@@ -0,0 +1,161 @@
+/**
+ * Storage argument that indicates a storage operation should affect
+ * ALL available storage mechanisms.  When use with getItem this returns
+ * an object with a key for each available storage system and the value
+ * stored there (if any).
+ */
+export const ALL: "all";
+
+/**
+ * Indicate a value should be loaded from or stored to the first available
+ * storage system, with preference order:
+ *
+ * 1. localStorage
+ * 2. cookies
+ * 3. sessionStorage
+ * 4. global variable
+ *
+ * When fetching a value the first value found that is not undefined will be returned,
+ * when storing a value the first available storage mechanism will be used.
+ */
+export const ANY: "any";
+
+/**
+ * Indicate the storage operation should apply to the global variable.
+ */
+export const GLOBAL: "global";
+
+/**
+ * Indicates the storage operaiton should apply to localStorage
+ */
+export const LOCAL_STORAGE: "localStorage";
+
+/**
+ * Indicates the storage operation should apply to sessionStorage
+ */
+export const SESSION_STORAGE: "sessionStorage";
+
+/**
+ * Indicates the storage operation should use cookies
+ */
+export const COOKIE: "cookie";
+
+/**
+ * Helper function to set a cookie
+ */
+export function setCookie(
+  name: string,
+  value: string,
+  ttl: number,
+  path: string,
+  domain: string,
+  secure: boolean
+): void;
+
+/**
+ * Helper function to get a cookie
+ * @param name
+ */
+export function getCookie(name: string): string;
+
+/**
+ * Helper function to remove a cooke
+ * @param name
+ */
+export function removeCookie(name: string): void;
+
+/**
+ * Global object used for the 'global' storage system
+ */
+export const globalContext: Record<string, any>;
+
+/**
+ * True if sessionStorage is allowed by the browser
+ */
+export function hasSessionStorage(): boolean;
+
+/**
+ * True if localStorage is allowed by the browser
+ */
+export function hasLocalStorage(): boolean;
+
+/**
+ * True if cookies are allowed by the browser
+ */
+export function hasCookies(): boolean;
+
+/**
+ * Get an item from storage.
+ *
+ * If storage is specified as ALL this returns an object with a key for each storage
+ * system and the value found in that storage.
+ *
+ * @param key Key to look for
+ * @param options Specify the preferred storage mechanism, either ANY, ALL, GLOBAL,
+ *   LOCAL_STORAGE, COOKIE, or SESSION_STORAGE
+ */
+export function getItem(
+  key: string,
+  options?: { storage?: string } | string
+): unknown;
+
+/**
+ * Save a value to storage.
+ *
+ * When storage is set to ANY this stores to the first available storage system in this order:
+ *
+ * 1. localStorage
+ * 2. cookies
+ * 3. sessionStorage
+ * 4. global variable
+ *
+ * When storage is set to ALL, it will update all available storage systems.
+ *
+ * Otherwise, it uses only the specified storage system.
+ */
+export function setItem(
+  key: string,
+  value: unknown,
+  options?: { storage?: string } | string
+): void;
+
+/**
+ * Remove item from storage.  Removes from all storage systems by default.
+ *
+ * The return value has a key for each storage system the value was present
+ * in and removed from, with the value that was there prior to removal.
+ */
+export function removeItem(
+  key: string,
+  options?: { storage?: string } | string
+): {
+  global?: any;
+  localStorage?: any;
+  sessionStorage?: any;
+  cookie?: any;
+};
+
+export interface AnalyticsStorage {
+  getItem(key: string, options?: { storage?: string } | string): unknown;
+  setItem(
+    key: string,
+    value: unknown,
+    options?: { storage?: string } | string
+  ): void;
+  removeItem(
+    key: string,
+    options?: { storage?: string } | string
+  ): {
+    global?: any;
+    localStorage?: any;
+    sessionStorage?: any;
+    cookie?: any;
+  };
+}
+
+/**
+ * Default export can be used as the `storage` option to the analytics constructor.
+ */
+declare const _default: AnalyticsStorage;
+
+export default _default;