import { ToastAction } from "@instill-ai/design-system";
export declare const TOAST_DEFAULT_DURATION = 4000;
export declare function toastInstillError({ title, error, description, action, duration, }: {
    title: string;
    error?: unknown;
    description?: string;
    action?: ToastAction;
    duration?: number;
}): void;
export type DuplicateFileInfo = {
    existing_file_name: string;
    existing_file_id: string;
    existing_namespace_id: string;
    existing_knowledge_base_id?: string;
};
/**
 * Extracts duplicate file metadata from a duplicate-content error.
 * Handles two error shapes:
 *   1. InstillError (toolkit SDK): { status: 409, response: { details: [...] } }
 *   2. Raw JSON body (EE SDK):     { code: 6, details: [...] }
 * Returns null if the error is not a duplicate file error.
 */
export declare function getDuplicateFileInfo(error: unknown): DuplicateFileInfo | null;
/**
 * Shows a toast for duplicate file errors with a clickable link to the existing file.
 */
export declare function toastDuplicateFileError({ fileName, existingFileName, existingFileLink, duration, }: {
    fileName: string;
    existingFileName: string;
    existingFileLink: string;
    duration?: number;
}): void;
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