import z from "zod/v4";

export class SchemaNoTitleError extends Error {
  constructor() {
    super(`Schema has no title metadata`);
  }
}

export const schemaTitle = (schema: z.ZodType) => {
  const meta = schema.meta();
  if (!meta?.title) {
    throw new SchemaNoTitleError();
  }
  return meta.title;
};