Function isDuplicatePath

src/utils/fsOperations.ts:187–198

(
  fs: FsOperations,
  filePath: string,
  loadedPaths: Set<string>,
)

 * @returns true if the file should be skipped (is duplicate)
 */
export function isDuplicatePath(
  fs: FsOperations,
  filePath: string,
  loadedPaths: Set<string>,
): boolean {
  const { resolvedPath } = safeResolvePath(fs, filePath)
  if (loadedPaths.has(resolvedPath)) {
    return true
  }
  loadedPaths.add(resolvedPath)
  return false
}

/**
 * Resolve the deepest existing ancestor of a path via realpathSync, walking