@aws-amplify/storage/dist/esm/foundation/utils/md5.mjs

Storage category of aws-amplify

import { Md5 } from '@smithy/md5-js';

// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
/**
 * Calculate the MD5 checksum of the given content as a base64 string.
 * Environment-specific dependencies (`readFile`, `toBase64`) are injected
 * via the {@link FoundationContext} so the foundation layer stays free of
 * any environment-discriminating logic.
 */
const calculateContentMd5 = async (ctx, content) => {
    const hasher = new Md5();
    const buffer = content instanceof Blob ? await ctx.readFile(content) : content;
    hasher.update(buffer);
    const digest = await hasher.digest();
    return ctx.toBase64(digest);
};

export { calculateContentMd5 };
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