import { z } from 'zod';
/**
 * Rustpad accepts any string as a pad id, but this server restricts ids to a
 * URL-safe shape: everything else is either a typo or a path-traversal
 * attempt. The frontend generates ids from the same alphabet.
 */
export declare const documentIdParam: z.ZodString;
/**
 * Rejects lone surrogates: they cannot be encoded as valid UTF-8, so the Rust
 * server drops the connection instead of answering — and inside a search
 * string they would corrupt the code-point arithmetic in ot.ts.
 */
export declare function wellFormed<T extends z.ZodString>(schema: T): T;
/**
 * Zod's max() counts UTF-16 units while Rustpad's 256 KiB limit counts code
 * points; the code-point check in ot.ts is authoritative, this bound just
 * rejects the absurd early.
 */
export declare const documentTextParam: z.ZodString;
export declare const languageParam: z.ZodString;
export declare const confirmTokenParam: z.ZodOptional<z.ZodString>;