Function memberListProblem

src/core/worksets.ts:104–127

(members: WorksetMember[])

 * compose flow (wrapping as workset_member_invalid).
 */
export function memberListProblem(members: WorksetMember[]): string | null {
  if (members.length === 0) {
    return 'members must not be empty';
  }

  const seen = new Set<string>();
  for (const member of members) {
    const labelProblem = memberLabelProblem(member.name);
    if (labelProblem !== null) {
      return labelProblem;
    }

    if (seen.has(member.name)) {
      return `duplicate member name '${member.name}' (use the name=path form to label members distinctly)`;
    }
    seen.add(member.name);

    if (!path.isAbsolute(member.path)) {
      return `member path '${member.path}' must be absolute`;
    }
  }

  return null;
}

export function memberLabelProblem(label: string): string | null {
  return folderStyleNameProblem(label, 'member name');