import type { StandardSchemaV1 } from "@standard-schema/spec";
import { ValidationError } from "./error.js";
import type { Extractor } from "./index.js";
export declare class InvalidQueryDataError extends ValidationError {
    constructor(issues: readonly StandardSchemaV1.Issue[]);
}
/**
 * Extractor that parses the query through a schema.
 *
 * The schema can be anything implementing the [Standard Schema](https://standardschema.dev/).
 *
 * If the query cannot be parsed, it will reject the request with a
 * `400 Bad Request` response.
 *
 * @example
 * ```ts
 * import { query } from "@taxum/core/extract";
 * import { m, Router } from "@taxum/core/routing";
 * import { z } from "zod";
 *
 * const paginationSchema = z.object({
 *     page: z.coerce.number().int().nonnegative(),
 * });
 *
 * const handler = handler([query(paginationSchema)], (pagination) => {
 *     const page = pagination.page;
 *
 *     // ...
 * });
 *
 * const router = new Router()
 *     .route("/users", m.get(handler));
 * ```
 *
 * @throws {@link InvalidQueryDataError} if the query cannot be parsed.
 */
export declare const query: <T extends StandardSchemaV1>(schema: T) => Extractor<StandardSchemaV1.InferOutput<T>>;