Function decompressNodeLocation

packages/core/src/hydration/compression.ts:61–75

(
  path: string,
)

 * a given node by its location.
 */
export function decompressNodeLocation(
  path: string,
): [string | number, ...(number | NodeNavigationStep)[]] {
  const matches = path.match(REF_EXTRACTOR_REGEXP)!;
  const [_, refNodeId, refNodeName, rest] = matches;
  // If a reference node is represented by an index, transform it to a number.
  const ref = refNodeId ? parseInt(refNodeId, 10) : refNodeName;
  const steps: (number | NodeNavigationStep)[] = [];
  // Match all segments in a path.
  for (const [_, step, count] of rest.matchAll(/(f|n)(\d*)/g)) {
    const repeat = parseInt(count, 10) || 1;
    steps.push(step as NodeNavigationStep, repeat);
  }
  return [ref, ...steps];
}