/**
 * User ID represents a NeoFS user identifier.
 */
export declare class UserID {
    private value;
    constructor(value: Uint8Array);
    /**
     * Creates a UserID from a protobuf message.
     */
    static fromProtoMessage(proto: any): UserID;
    /**
     * Converts to protobuf message.
     */
    toProtoMessage(): any;
    /**
     * Gets the raw value as bytes.
     */
    getValue(): Uint8Array;
    /**
     * Checks if this UserID is zero (empty).
     */
    isZero(): boolean;
    /**
     * Converts to a hex string.
     */
    toHex(): string;
    /**
     * Creates a UserID from a hex string.
     */
    static fromHex(hex: string): UserID;
    /**
     * Converts to a base58 string.
     */
    toBase58(): string;
    /**
     * Creates a UserID from a base58 string.
     */
    static fromBase58(base58: string): UserID;
    /**
     * Checks if this UserID equals another.
     */
    equals(other: UserID): boolean;
    /**
     * Converts to a string representation.
     */
    toString(): string;
}