import { type MachineDefinition } from "../MachineDefinition.js";
import type { EventObject, MachineContext } from "../types/index.js";
export interface ToMermaidOptions {
    /** Diagram direction. @default "TB" */
    direction?: "TB" | "LR";
    /** Append `/ action1, action2` to transition labels and render entry/exit as state notes. @default true */
    includeActions?: boolean;
    /** Append `[guard]` to transition labels. @default true */
    includeGuards?: boolean;
}
/**
 * Renders `definition` as a `stateDiagram-v2` in the converter's dialect
 * (see the module comment): `%% @machine` / `%% @context initial` directives,
 * nested `state id { ... }` blocks, `--` regions, `[*]` for initial and
 * `$final` states, labels `EVENT [guard] / actions`, `after <delay>`, `done`
 * and none for `always`.
 */
export declare function toMermaid<TContext extends MachineContext, TEvent extends EventObject, TOutput>(definition: MachineDefinition<TContext, TEvent, TOutput>, options?: ToMermaidOptions): string;