Function formDirContaining

packages/shared-domain/src/databases.ts:87–95

(relPath: string)

 * otherwise null. e.g. `a/X.base/pages/r.md` → `a/X.base`.
 */
export function formDirContaining(relPath: string): string | null {
  const parts = toPosixPath(relPath).split('/')
  for (let i = 0; i < parts.length; i++) {
    if (parts[i].toLowerCase().endsWith(FORM_DIR_SUFFIX)) {
      return parts.slice(0, i + 1).join('/')
    }
  }
  return null
}

/** Display title from a database folder name/path (strips the `.base` suffix). */
export function formTitleFromDir(nameOrPath: string): string {