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1// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
2// SPDX-License-Identifier: Apache-2.0
3
4/**
5 * This Symbol is used to reference an internal-only PubSub provider that
6 * is used for AppSync/GraphQL subscriptions in the API category.
7 */
8const hasSymbol =
9 typeof Symbol !== 'undefined' && typeof Symbol.for === 'function';
10
11export const INTERNAL_AWS_APPSYNC_REALTIME_PUBSUB_PROVIDER = hasSymbol
12 ? Symbol.for('INTERNAL_AWS_APPSYNC_REALTIME_PUBSUB_PROVIDER')
13 : '@@INTERNAL_AWS_APPSYNC_REALTIME_PUBSUB_PROVIDER';
14
15export const USER_AGENT_HEADER = 'x-amz-user-agent';