// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

/**
 * This Symbol is used to reference an internal-only PubSub provider that
 * is used for AppSync/GraphQL subscriptions in the API category.
 */
const hasSymbol =
	typeof Symbol !== 'undefined' && typeof Symbol.for === 'function';

export const INTERNAL_AWS_APPSYNC_REALTIME_PUBSUB_PROVIDER = hasSymbol
	? Symbol.for('INTERNAL_AWS_APPSYNC_REALTIME_PUBSUB_PROVIDER')
	: '@@INTERNAL_AWS_APPSYNC_REALTIME_PUBSUB_PROVIDER';

export const USER_AGENT_HEADER = 'x-amz-user-agent';