import type { ApolloClient } from '@apollo/client';
import type { PropertyDeclaration } from 'lit';
import type { ApolloController, VariablesOf } from '@apollo-elements/core';
import type { ComponentDocument, Data, GraphQLError, Variables } from '@apollo-elements/core/types';
import { LitElement } from 'lit';
export interface ControlledPropertyDeclaration extends PropertyDeclaration {
    controlled?: boolean | string;
    readonly?: boolean;
}
/**
 * `ApolloElement`
 *
 * 🚀 Single-operation custom-element base class for apollo lit elements.
 *
 * See [`ApolloElementInterface`](https://apolloelements.dev/api/core/interfaces/element) for more information on events
 */
export declare class ApolloElement<D = unknown, V = VariablesOf<D>> extends LitElement {
    controller: ApolloController<D, V>;
    readyToReceiveDocument: boolean;
    connectedCallback(): void;
    disconnectedCallback(): void;
    /** @summary The Apollo Client instance. */
    client: ApolloClient | null;
    /**
     * @summary Operation document.
     * GraphQL operation document i.e. query, subscription, or mutation.
     * Must be a parsed GraphQL `DocumentNode`
     */
    document: ComponentDocument<D, V> | null;
    /** @summary Context passed to the link execution chain. */
    context?: Record<string, unknown>;
    /** @summary Whether a request is in flight. */
    loading: boolean;
    /** @summary Latest Data. */
    data: Data<D> | null;
    /** @summary Operation variables. */
    variables: Variables<D, V> | null;
    /** @summary Latest error */
    error: Error | null;
    /** @summary Latest errors */
    errors: readonly GraphQLError[];
}