/**
 * Typed errors thrown by S3Proxy. Replace v3.x's silent empty-stream
 * substitution: callers must now decide how to render each error.
 *
 * Discriminate by `instanceof` (preferred) or by `err.name` — the
 * subclass name doubles as the error code, e.g. 'S3NotFound'.
 */
export declare class S3ProxyError extends Error {
    readonly statusCode: number;
    constructor(message: string, statusCode: number, options?: {
        cause?: unknown;
    });
}
export declare class S3NotFound extends S3ProxyError {
    constructor(target: string, options?: {
        cause?: unknown;
    });
}
export declare class S3Forbidden extends S3ProxyError {
    constructor(target: string, options?: {
        cause?: unknown;
    });
}
export declare class S3InvalidRange extends S3ProxyError {
    constructor(target: string, options?: {
        cause?: unknown;
    });
}
export declare class InvalidRequest extends S3ProxyError {
    constructor(message: string, options?: {
        cause?: unknown;
    });
}
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