import { CustomHeaders } from '@aws-amplify/data-schema/runtime';
import { CommonPublicClientOptions, GraphQLOptionsV6, GraphQLResponseV6, V6Client } from '../types';
/**
 * Invokes graphql operations against a graphql service, providing correct input and
 * output types if Amplify-generated graphql from a recent version of the CLI/codegen
 * are used *or* correct typing is provided via the type argument.
 *
 * Amplify-generated "branded" graphql queries will look similar to this:
 *
 * ```ts
 *                               //
 *                               // |-- branding
 *                               // v
 * export const getModel = `...` as GeneratedQuery<
 * 	GetModelQueryVariables,
 * 	GetModelQuery
 * >;
 * ```
 *
 * If this branding is not in your generated graphql, update to a newer version of
 * CLI/codegen and regenerate your graphql using `amplify codegen`.
 *
 * ## Using Amplify-generated graphql
 *
 * ```ts
 * import * as queries from './graphql/queries';
 *
 * //
 * //    |-- correctly typed graphql response containing a Widget
 * //    v
 * const queryResult = await graphql({
 * 	query: queries.getWidget,
 * 	variables: {
 * 		id: "abc", // <-- type hinted/enforced
 * 	},
 * });
 *
 * //
 * //    |-- a correctly typed Widget
 * //    v
 * const fetchedWidget = queryResult.data?.getWidget!;
 * ```
 *
 * ## Custom input + result types
 *
 * To provide input types (`variables`) and result types:
 *
 * ```ts
 * type GetById_NameOnly = {
 * 	variables: {
 * 		id: string
 * 	},
 * 	result: Promise<{
 * 		data: { getWidget: { name: string } }
 * 	}>
 * }
 *
 * //
 * //    |-- type is GetById_NameOnly["result"]
 * //    v
 * const result = graphql<GetById_NameOnly>({
 * 	query: "...",
 * 	variables: { id: "abc" }  // <-- type of GetById_NameOnly["variables"]
 * });
 * ```
 *
 * ## Custom result type only
 *
 * To specify result types only, use a type that is *not* in the `{variables, result}` shape:
 *
 * ```ts
 * type MyResultType = Promise<{
 * 	data: {
 * 		getWidget: { name: string }
 * 	}
 * }>
 *
 * //
 * //    |-- type is MyResultType
 * //    v
 * const result = graphql<MyResultType>({query: "..."});
 * ```
 *
 * @param options
 * @param additionalHeaders
 */
export declare function graphql<FALLBACK_TYPES = unknown, TYPED_GQL_STRING extends string = string, Options extends CommonPublicClientOptions = object>(this: V6Client, options: GraphQLOptionsV6<FALLBACK_TYPES, TYPED_GQL_STRING, Options>, additionalHeaders?: CustomHeaders): GraphQLResponseV6<FALLBACK_TYPES, TYPED_GQL_STRING>;
/**
 * Cancels an inflight request. Only applicable for graphql queries and mutations
 * @param {any} request - request to cancel
 * @returns - A boolean indicating if the request was cancelled
 */
export declare function cancel(this: V6Client, promise: Promise<any>, message?: string): boolean;
/**
 * Checks to see if an error thrown is from an api request cancellation
 * @param {any} error - Any error
 * @returns - A boolean indicating if the error was from an api request cancellation
 */
export declare function isCancelError(this: V6Client, error: any): boolean;
export { GraphQLOptionsV6, GraphQLResponseV6 };