diff --git a/packages/aws-amplify/__tests__/exports.test.ts b/packages/aws-amplify/__tests__/exports.test.ts
index c6425ad7c93..7d151df375c 100644
--- a/packages/aws-amplify/__tests__/exports.test.ts
+++ b/packages/aws-amplify/__tests__/exports.test.ts
@@ -186,6 +186,8 @@ describe('aws-amplify Exports', () => {
 		it('should only export expected symbols from the Cognito provider', () => {
 			expect(Object.keys(authCognitoExports).sort()).toEqual(
 				[
+					'AUTH_KEY_PREFIX',
+					'createKeysForAuthStorage',
 					'signUp',
 					'resetPassword',
 					'confirmResetPassword',
@@ -200,7 +202,10 @@ describe('aws-amplify Exports', () => {
 					'setUpTOTP',
 					'updateUserAttributes',
 					'updateUserAttribute',
+					'generateCodeVerifier',
+					'generateState',
 					'getCurrentUser',
+					'getRedirectUrl',
 					'confirmUserAttribute',
 					'signInWithRedirect',
 					'fetchUserAttributes',
@@ -220,6 +225,7 @@ describe('aws-amplify Exports', () => {
 					'DefaultTokenStore',
 					'refreshAuthTokens',
 					'refreshAuthTokensWithoutDedupe',
+					'validateState',
 				].sort(),
 			);
 		});
diff --git a/packages/aws-amplify/jest.config.js b/packages/aws-amplify/jest.config.js
index 5254f524623..fa397b3b531 100644
--- a/packages/aws-amplify/jest.config.js
+++ b/packages/aws-amplify/jest.config.js
@@ -8,6 +8,10 @@ module.exports = {
 			statements: 91,
 		},
 	},
+	coveragePathIgnorePatterns: [
+		'src/adapter-core/index.ts',
+		'src/utils/index.ts',
+	],
 	moduleNameMapper: {
 		uuid: require.resolve('uuid'),
 	},
diff --git a/packages/aws-amplify/src/adapter-core/constants.ts b/packages/aws-amplify/src/adapter-core/constants.ts
new file mode 100644
index 00000000000..d96711d3454
--- /dev/null
+++ b/packages/aws-amplify/src/adapter-core/constants.ts
@@ -0,0 +1,4 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+export const DEFAULT_COOKIE_EXPIRY = 365 * 24 * 60 * 60 * 1000; // 1 year in milliseconds
diff --git a/packages/aws-amplify/src/adapter-core/index.ts b/packages/aws-amplify/src/adapter-core/index.ts
index 755f8c12b42..0bb85581dc0 100644
--- a/packages/aws-amplify/src/adapter-core/index.ts
+++ b/packages/aws-amplify/src/adapter-core/index.ts
@@ -15,3 +15,12 @@ export {
 	AmplifyServer,
 	CookieStorage,
 } from '@aws-amplify/core/internals/adapter-core';
+export {
+	generateState,
+	getRedirectUrl,
+	generateCodeVerifier,
+	validateState,
+	createKeysForAuthStorage,
+	AUTH_KEY_PREFIX,
+} from '@aws-amplify/auth/cognito';
+export { DEFAULT_COOKIE_EXPIRY } from './constants';
diff --git a/packages/aws-amplify/src/adapter-core/storageFactories/createKeyValueStorageFromCookieStorageAdapter.ts b/packages/aws-amplify/src/adapter-core/storageFactories/createKeyValueStorageFromCookieStorageAdapter.ts
index da15ae22192..0bce4c8395f 100644
--- a/packages/aws-amplify/src/adapter-core/storageFactories/createKeyValueStorageFromCookieStorageAdapter.ts
+++ b/packages/aws-amplify/src/adapter-core/storageFactories/createKeyValueStorageFromCookieStorageAdapter.ts
@@ -7,13 +7,14 @@ import {
 	KeyValueStorageMethodValidator,
 } from '@aws-amplify/core/internals/adapter-core';
 
+import { DEFAULT_COOKIE_EXPIRY } from '../constants';
+
 export const defaultSetCookieOptions: CookieStorage.SetCookieOptions = {
 	// TODO: allow configure with a public interface
 	sameSite: 'lax',
 	secure: true,
 	path: '/',
 };
-const ONE_YEAR_IN_MS = 365 * 24 * 60 * 60 * 1000;
 
 /**
  * Creates a Key Value storage interface using the `cookieStorageAdapter` as the
@@ -40,7 +41,7 @@ export const createKeyValueStorageFromCookieStorageAdapter = (
 			// TODO(HuiSF): follow up the default CookieSerializeOptions values
 			cookieStorageAdapter.set(key, value, {
 				...defaultSetCookieOptions,
-				expires: new Date(Date.now() + ONE_YEAR_IN_MS),
+				expires: new Date(Date.now() + DEFAULT_COOKIE_EXPIRY),
 				...overrideCookieAttributes,
 			});