import type { Nullable } from '@voiceflow/common';
import type { BaseEvent, BaseNode, BasePort, BasePortList, BaseStep, BaseStepPorts, NodeID } from './utils';
export declare const _V1_STOP_TYPES = "stopTypes";
export interface StepData<Payload = unknown> {
    _v: 1;
    stop?: boolean;
    paths: {
        label: string;
    }[];
    payload: Payload;
    defaultPath?: number;
}
export interface StepPort<Event = BaseEvent> extends BasePort {
    data: {
        event?: Event;
    };
}
export interface StepPorts<Event> extends BaseStepPorts<Record<string, StepPort<Event>>, StepPort<Event>[]> {
}
export interface Step<Payload = unknown, Event = BaseEvent> extends BaseStep<StepData<Payload>, StepPorts<Event>, BasePortList<StepPort<Event>>> {
    type: string;
}
export interface NodePath<Event = BaseEvent> {
    label?: string;
    event?: Event;
    nextID: Nullable<NodeID>;
}
export interface Node<Event = BaseEvent> extends BaseNode {
    _v: 1;
    stop: boolean;
    paths: Array<NodePath<Event>>;
    payload: unknown;
    defaultPath?: number;
}
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