/********************************************************************
 * @author:      Kaven
 * @email:       kaven@wuwenkai.com
 * @website:     http://blog.kaven.xyz
 * @file:        [Kaven-Basic] /src/libs/string/ParseFileSize.ts
 * @create:      2025-06-26 13:32:54.300
 * @modify:      2025-07-11 21:19:12.846
 * @version:     6.0.0
 * @times:       6
 * @lines:       93
 * @copyright:   Copyright © 2018-2025 Kaven. All Rights Reserved.
 * @description: [description]
 * @license:
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 ********************************************************************/
/**
 * Parses a human-readable file size string and returns its numeric value in bytes.
 *
 * Supports both SI (e.g., kB, MB, GB) and IEC (e.g., KiB, MiB, GiB) units, as well as "Bytes".
 * If no unit is specified, the numeric value is returned as-is.
 * Returns `undefined` if the input is invalid or the unit is unrecognized.
 *
 * @param fileSize - The file size string to parse (e.g., "10 MB", "5.5 GiB", "1000").
 * @returns The file size in bytes as a number, or `undefined` if parsing fails.
 *
 * @since 3.0.0
 * @version 2023-11-25
 */
export declare function ParseFileSize(fileSize: string): number | undefined;
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