import type { NodeSpec } from 'prosemirror-model';
import type { ExtensionAuto } from "../../../../core/index.js";
import { ImgSizeAttr } from "./const.js";
export { ImgSizeAttr };
export type ImgSizeSpecsOptions = {
    /**
     * @deprecated use placeholder option in BehaviorPreset instead.
     */
    placeholder?: NodeSpec['placeholder'];
};
export declare const ImgSizeSpecs: ExtensionAuto<ImgSizeSpecsOptions>;