import { DynamicViewFlow, scalar, StepPath } from '@likec4/core';
import { TreeNodeData } from '@mantine/core';
import { DiagramContext } from '../../state/types';
export interface OutlineTreeNodeStep extends TreeNodeData {
    readonly value: StepPath;
    readonly nodeProps: Readonly<{
        readonly type: 'step';
        /** Global step number (1-based) across all flows */
        readonly stepnum: number;
        /** Title of the source actor */
        readonly source: string;
        /** Title of the target actor */
        readonly target: string;
        /** Relationship label, if any */
        readonly label: string | null;
        readonly notes: scalar.MarkdownOrString | null;
    }>;
}
export interface OutlineTreeNodeFlow extends TreeNodeData {
    readonly value: StepPath;
    readonly nodeProps: Readonly<{
        readonly type: DynamicViewFlow.SubFlowType;
        /** Friendly title of the sub-flow, if defined */
        readonly title: string | undefined;
    }>;
    children: OutlineTreeNodeData[];
}
export type OutlineTreeNodeData = OutlineTreeNodeStep | OutlineTreeNodeFlow;
export type OutlineTreeNodes = OutlineTreeNodeData[];
/**
 * Type guard narrowing a tree node to a sub-flow node.
 * (The discriminant lives on the nested `nodeProps.type`, so an explicit guard
 * is needed for reliable narrowing.)
 */
export declare function isOutlineFlowNode(node: OutlineTreeNodeData): node is OutlineTreeNodeFlow;
export declare function useTreeData(flow: DynamicViewFlow, collapsed: DiagramContext['collapsedSequenceFlows']): OutlineTreeNodes;