import type { FileLoadCallback } from '../io';
import type { Attachment } from 'svelte/attachments';
import { type MaterialPayload, type OpenedMaterial } from './open';
export interface MaterialLoaderInputs<Value> {
    data_url?: () => string | undefined;
    inline_source?: () => MaterialPayload | undefined;
    current_value: () => Value | undefined;
    allow_file_drop: () => boolean;
    on_file_drop?: () => FileLoadCallback | undefined;
    set_loading?: (loading: boolean) => void;
    set_error: (message: string | undefined) => void;
    set_dragover?: (over: boolean) => void;
    commit: (opened: OpenedMaterial) => void;
    report_error: (message: string, metadata?: Partial<OpenedMaterial[`provenance`]>) => void;
}
export declare function create_material_loader<Value>(inputs: MaterialLoaderInputs<Value>): Attachment<HTMLElement>;