import { Node, Region, Parser, Context } from '../../core';
import { BracketRule } from '../block/bracket';
export declare class FormulaRule extends BracketRule {
    marker: string;
    parser: Parser;
    constructor(ctx: Context, options: {
        marker: string;
    });
    get openMarker(): string;
    get closeMarker(): string;
    protected parseSubRegion(region: Region): Node;
}
export declare class FormulaNode extends Node {
    readonly marker: string;
    constructor(region: Region, children: Node[], marker: string);
    render(ctx: Context): string;
}