Function prefixedWith

packages/router/src/create_url_tree.ts:476–508

(segmentGroup: UrlSegmentGroup, startIndex: number, commands: readonly any[])

}

function prefixedWith(segmentGroup: UrlSegmentGroup, startIndex: number, commands: readonly any[]) {
  let currentCommandIndex = 0;
  let currentPathIndex = startIndex;

  const noMatch = {match: false, pathIndex: 0, commandIndex: 0};
  while (currentPathIndex < segmentGroup.segments.length) {
    if (currentCommandIndex >= commands.length) return noMatch;
    const path = segmentGroup.segments[currentPathIndex];
    const command = commands[currentCommandIndex];
    // Do not try to consume command as part of the prefixing if it has outlets because it can
    // contain outlets other than the one being processed. Consuming the outlets command would
    // result in other outlets being ignored.
    if (isCommandWithOutlets(command)) {
      break;
    }
    const curr = `${command}`;
    const next =
      currentCommandIndex < commands.length - 1 ? commands[currentCommandIndex + 1] : null;

    if (currentPathIndex > 0 && curr === undefined) break;

    if (curr && next && typeof next === 'object' && next.outlets === undefined) {
      if (!compare(curr, next, path)) return noMatch;
      currentCommandIndex += 2;
    } else {
      if (!compare(curr, {}, path)) return noMatch;
      currentCommandIndex++;
    }
    currentPathIndex++;
  }

  return {match: true, pathIndex: currentPathIndex, commandIndex: currentCommandIndex};
}

function createNewSegmentGroup(
  segmentGroup: UrlSegmentGroup,