Function searchForWorkspaceRoot

packages/vite/src/node/server/searchRoot.ts:84–97

(
  current: string,
  root: string = searchForPackageRoot(current),
)

 * Search up for the nearest workspace root
 */
export function searchForWorkspaceRoot(
  current: string,
  root: string = searchForPackageRoot(current),
): string {
  if (hasRootFile(current)) return current
  if (hasWorkspacePackageJSON(current)) return current
  if (hasWorkspaceDenoJSON(current)) return current

  const dir = dirname(current)
  // reach the fs root
  if (!dir || dir === current) return root

  return searchForWorkspaceRoot(dir, root)
}