import { Plugin, ProseMirror, Schema } from '../../prosemirror';
import { HorizontalRuleNodeType } from '../../schema';
export declare type StateChangeHandler = (state: HorizontalRuleState) => any;
export declare class HorizontalRuleState {
    private changeHandlers;
    private pm;
    constructor(pm: PM);
    addKeymap(pm: any): void;
}
declare var _default: Plugin<HorizontalRuleState>;
export default _default;
export interface PM extends ProseMirror {
    schema: S;
}
export interface S extends Schema {
    nodes: {
        horizontal_rule: HorizontalRuleNodeType;
    };
}