Function isBoundToOutOfRepoImport

src/resolution/import-resolver.ts:2647–2672

(
  ref: UnresolvedRef,
  context: ResolutionContext
)

 * FQN/module matchers), so there is no trustworthy oracle to consult here.
 */
export function isBoundToOutOfRepoImport(
  ref: UnresolvedRef,
  context: ResolutionContext
): boolean {
  const name = ref.referenceName;
  if (name.includes('::') || name.includes('.')) return false; // qualified refs resolve by path

  if (ref.language === 'rust') {
    const content = context.readFile(ref.filePath);
    if (!content) return false;
    const usePath = collectRustUseBindings(content).get(name);
    if (!usePath) return false;
    const segments = usePath.split('::');
    if (segments.length < 2 || !RUST_STDLIB_ROOTS.has(segments[0]!)) return false;
    // 2015-edition crate-relative paths can shadow a stdlib root with a local
    // module of the same name — if the path walks to a real file, it's local.
    return resolveRustModuleFile(segments.slice(0, -1), ref.filePath, context) === null;
  }

  if (!ESM_IMPORT_LANGUAGES.has(ref.language)) return false;
  for (const imp of context.getImportMappings(ref.filePath, ref.language)) {
    if (imp.localName !== name) continue;
    return isExternalImport(imp.source, ref.language, context);
  }
  return false;
}