Function adjustTargetPath

yaml-flow-editor/src/utils/flow-utils.ts:128–156

(sourceBranch: string, sourceIndex: number, targetBranch: string)

// Adjust target path if it was affected by source removal
export const adjustTargetPath = (sourceBranch: string, sourceIndex: number, targetBranch: string): string => {
  const sourceParts = sourceBranch.split('.');
  const targetParts = targetBranch.split('.');
  
  // If target path is shorter or equal to source path, it's not a descendant (unless same list, handled elsewhere)
  if (targetParts.length <= sourceParts.length) return targetBranch;
  
  // Check if target is a descendant of the source list
  // i.e. sourcePath prefix matches targetPath prefix
  for (let i = 0; i < sourceParts.length; i++) {
    if (sourceParts[i] !== targetParts[i]) return targetBranch;
  }
  
  // sourceParts points to the list that was modified.
  // targetParts[sourceParts.length] is the index in that list that leads to the target.
  const affectedIndexStr = targetParts[sourceParts.length];
  const affectedIndex = Number(affectedIndexStr);
  
  if (isNaN(affectedIndex)) return targetBranch;
  
  // If the item removed was before the path to the target, shift the index down
  if (sourceIndex < affectedIndex) {
    const newParts = [...targetParts];
    newParts[sourceParts.length] = String(affectedIndex - 1);
    return newParts.join('.');
  }
  
  return targetBranch;
};

// Insert item at specific path and index
export const insertNestedItem = (