Function findFlatMatch

packages/router-core/src/new-process-route-tree.ts:695–707

(
  /** The path to match. */
  path: string,
  /** The `processedTree` returned by the initial `processRouteTree` call. */
  processedTree: ProcessedTree<any, T, any>,
)

 * Take an arbitrary list of routes, create a tree from them (if it hasn't been created already), and match a path against it.
 */
export function findFlatMatch<T extends Extract<RouteLike, { from: string }>>(
  /** The path to match. */
  path: string,
  /** The `processedTree` returned by the initial `processRouteTree` call. */
  processedTree: ProcessedTree<any, T, any>,
) {
  path ||= '/'
  const cached = processedTree.flatCache!.get(path)
  if (cached) return cached
  const result = findMatch(path, processedTree.masksTree!)
  processedTree.flatCache!.set(path, result)
  return result
}

/**
 * @deprecated keep until v2 so that `router.matchRoute` can keep not caring about the actual route tree