export interface LayerNode {
    tag: string;
    semanticId: string;
    children: LayerNode[];
    repeator?: string | null;
}
/**
 * Parse WDL layers (string, nested tree, or 5-element tuples) into a nested tree.
 * Operators: `>` child, `+` sibling, `<` / `<*N` / `<@N` de-indent.
 */
export declare function parseLayers(layers: string | any[]): LayerNode[];
export declare function isComponentRef(tag: string | undefined | null): boolean;
/**
 * Find a node by semanticId (depth-first)
 */
export declare function findNode(nodes: LayerNode[], semanticId: string): {
    node: LayerNode;
    parent: LayerNode | null;
    index: number;
} | null;
/**
 * Serialize a nested tree to a WDL layers string.
 * Operators are derived from depth deltas so wrap/append round-trip with `<` / `<*N`.
 */
export declare function serializeLayers(nodes: LayerNode[]): string;
/**
 * Create a node from a short layer string (e.g. "div.card" or "h2.title")
 */
export declare function createNode(layer: string): LayerNode;