@aws-amplify/core/dist/esm/clients/internal/composeServiceApi.mjs

Core category of aws-amplify

// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
const composeServiceApi = (transferHandler, serializer, deserializer, defaultConfig) => {
    return async (config, input) => {
        const resolvedConfig = {
            ...defaultConfig,
            ...config,
        };
        // We may want to allow different endpoints from given config(other than region) and input.
        // Currently S3 supports additional `useAccelerateEndpoint` option to use accelerate endpoint.
        const endpoint = await resolvedConfig.endpointResolver(resolvedConfig, input);
        // Unlike AWS SDK clients, a serializer should NOT populate the `host` or `content-length` headers.
        // Both of these headers are prohibited per Spec(https://developer.mozilla.org/en-US/docs/Glossary/Forbidden_header_name).
        // They will be populated automatically by browser, or node-fetch polyfill.
        const request = await serializer(input, endpoint);
        const response = await transferHandler(request, {
            ...resolvedConfig,
        });
        return await deserializer(response);
    };
};

export { composeServiceApi };
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