/**
 * Normalize n8n conditional nodes (IF / Filter / Switch) into a canonical
 * branch spec that maps onto @pikku/addon-graph's `branch` function. Structural
 * only — operand values stay raw (n8n literals or `={{ … }}` expressions) and are
 * lowered to `ref`/`template`/literal by the codegen.
 *
 * Branch keys are output-slot indices ("0", "1", …) so they line up with the
 * graph `next` Record the topology emits. IF: slot 0 = true, slot 1 = false.
 * Filter: slot 0 = kept (no fallback — a false result dead-ends). Switch: one
 * slot per rule, plus an optional `extra` fallback slot.
 */
export interface RawCondition {
    left: unknown;
    right?: unknown;
    type: string;
    operation: string;
}
export interface RawCase {
    key: string;
    combinator: 'and' | 'or';
    conditions: RawCondition[];
}
export interface BranchSpec {
    cases: RawCase[];
    fallback?: string;
}
interface BranchNode {
    typeShort: string;
    parameters: Record<string, unknown>;
}
/**
 * Build a branch spec for an IF / Filter / Switch node, or `null` when the node
 * isn't a supported conditional (e.g. Switch expression-mode → stays a stub).
 */
export declare function normalizeBranch(node: BranchNode): BranchSpec | null;
export {};