Function isParentDirectory

packages/vite/src/node/utils.ts:256–262

(dir: string, file: string)

 * @returns true if dir is a parent of file
 */
export function isParentDirectory(dir: string, file: string): boolean {
  dir = withTrailingSlash(dir)
  return (
    file.startsWith(dir) ||
    (isCaseInsensitiveFS && file.toLowerCase().startsWith(dir.toLowerCase()))
  )
}

/**
 * Check if 2 file name are identical