import { StringSchema, type StringSchemaOptions } from "./StringSchema.js";
/**
 * Define a valid database key.
 *
 * - Characters that are not a-z, A-Z, 0-9 are removed.
 * - Default minimum key length is 1 character.
 * - Default maximum key length is 32 characters.
 * - 32 characters is enough for UUIDs, as the 4 `-` hyphens are removed.
 */
export declare class KeySchema extends StringSchema {
    constructor({ one, title, min, max, ...options }: StringSchemaOptions);
    sanitize(str: string): string;
}
/** Valid database key. */
export declare const KEY: KeySchema;
/** Valid optional database key. */
export declare const NULLABLE_KEY: import("./NullableSchema.js").NullableSchema<string>;