Function injectScopeIntoPath

packages/graph/src/Steps.ts:5730–5749

* Inject a scope path's bindings into a result path. * This is used to preserve FOREACH iteration variable bindings when * inner MATCH operations create new paths that lose the original bindings. * * The function rebuilds the result path chain with the scope path as the base, * so that path.get

(
  resultPath: TraversalPath<any, any, any>,
  scopePath: TraversalPath<any, any, any>,
)

 * so that path.get() can find bindings from both the result and the scope.
 */
function injectScopeIntoPath(
  resultPath: TraversalPath<any, any, any>,
  scopePath: TraversalPath<any, any, any>,
): TraversalPath<any, any, any> {
  // Collect the path chain from resultPath (from root to leaf)
  const chain: Array<{ value: any; labels: readonly string[] }> = [];
  let current: TraversalPath<any, any, any> | undefined = resultPath;
  while (current) {
    chain.unshift({ value: current.value, labels: current.labels });
    current = current.parent as TraversalPath<any, any, any> | undefined;
  }

  // Rebuild the chain with scopePath as the base
  let rebuiltPath: TraversalPath<any, any, any> = scopePath;
  for (const { value, labels } of chain) {
    rebuiltPath = new TraversalPath(rebuiltPath, value, labels as readonly string[]);
  }

  return rebuiltPath;
}

export type SetAssignmentValue =
  | {