Function resolveTargetFlag

src/installer/targets/registry.ts:66–91

(value: string, loc: Location)

 *   - csv list — `'claude,cursor'` etc. Unknown ids throw.
 */
export function resolveTargetFlag(value: string, loc: Location): AgentTarget[] {
  if (value === 'none') return [];
  if (value === 'all') return [...ALL_TARGETS];
  if (value === 'auto') {
    const detected = detectAll(loc).filter(({ detection }) => detection.installed);
    if (detected.length > 0) return detected.map(({ target }) => target);
    const fallback = getTarget('claude');
    return fallback ? [fallback] : [];
  }

  const ids = value.split(',').map((s) => s.trim()).filter(Boolean);
  const resolved: AgentTarget[] = [];
  const unknown: string[] = [];
  for (const id of ids) {
    const t = getTarget(id);
    if (t) resolved.push(t);
    else unknown.push(id);
  }
  if (unknown.length > 0) {
    const known = listTargetIds().join(', ');
    throw new Error(
      `Unknown --target id(s): ${unknown.join(', ')}. Known: ${known}, plus 'auto' / 'all' / 'none'.`,
    );
  }
  return resolved;
}