import { Plugin, PluginKey, EditorState } from 'prosemirror-state';
import { DecorationSet } from 'prosemirror-view';
export declare const imageUploadKey: PluginKey<DecorationSet>;
export interface ImagePluginOptions {
    /** Called with image files pasted or dropped into the editor. */
    onImageFiles?: (files: File[], pos: number | null) => void;
}
/**
 * Image behaviors: routes pasted/dropped image files to the host's upload
 * flow and tracks "uploading…" widget decorations that survive concurrent
 * edits by mapping through transactions.
 */
export declare function imagePlugin(options?: ImagePluginOptions): Plugin<DecorationSet>;
/** Position of an upload placeholder, after mapping through edits. */
export declare function findUploadPos(state: EditorState, id: string): number | null;