import type { HtmlOutputRule, NodeOutput, ParserRule } from "simple-markdown";
export type Rule = ParserRule & HtmlOutputRule & {
    readonly rerenderInterval?: NodeOutput<number | undefined>;
};
export declare function extendRule<T extends Rule>(additionalRules: Partial<T>, defaultRule: T): T;
//# sourceMappingURL=extendRule.d.ts.map