/**
 * Converts a string, bigint, or ArrayBufferLike to an ArrayBufferLike, with optional zero-padding.
 * @param value - The value to convert (hex string, bigint, or existing buffer)
 * @param padLength - Minimum byte length, left-padded with zeros if needed
 * @param base - Numeric base for string parsing (default 16)
 * @returns The resulting ArrayBufferLike, or undefined if value is undefined
 */
export declare function toArrayBuffer(value: undefined, padLength?: number, base?: number): undefined;
export declare function toArrayBuffer(value: ArrayBufferLike | bigint | string, padLength?: number, base?: number): ArrayBufferLike;
export declare function toArrayBuffer(value: ArrayBufferLike | bigint | string | undefined, padLength?: number, base?: number): ArrayBufferLike | undefined;
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