import type { WorkflowNode, WorkflowState, NodeResult, NodeContext } from '@cogitator-ai/types';
export type SimpleNodeFn<S, O = unknown> = (state: S, input?: unknown) => Promise<O>;
export type FullNodeFn<S> = (ctx: NodeContext<S>) => Promise<NodeResult<S>>;
export interface FunctionNodeOptions<S = WorkflowState> {
    stateMapper?: (output: unknown) => Partial<S>;
}
export declare function functionNode<S extends WorkflowState = WorkflowState, O = unknown>(name: string, fn: SimpleNodeFn<S, O>, options?: FunctionNodeOptions<S>): WorkflowNode<S>;
export declare function customNode<S extends WorkflowState = WorkflowState>(name: string, fn: FullNodeFn<S>): WorkflowNode<S>;
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