import { ReactPortal } from 'react';
export declare enum ConflictAction {
    KeepBoth = "keep-both",
    Replace = "replace",
    Cancel = "cancel"
}
export declare type ConflictChoice = {
    action: ConflictAction;
    newName?: string;
};
export declare function useUploadConflictDialog(): [
    (args: {
        originalName: string;
        existingNames: Set<string> | string[];
        isTrashedExisting?: boolean;
    }) => Promise<ConflictChoice>,
    ReactPortal | null
];