import { ApolloClient, InMemoryCache } from '@apollo/client';
export interface CreateApolloClientOptions {
    uri: string;
    getAuthToken?: () => string | null | undefined;
    onAuthError?: () => void;
    onNetworkError?: (error: Error) => void;
    cache?: InMemoryCache;
    retryAttempts?: number;
    retryDelay?: number;
}
export declare function withBrowserTraceHeader(headersInit?: HeadersInit): Headers;
/**
 * Decide whether an Apollo link error should be retried. Exported so it
 * can be unit-tested independently of an ApolloClient instance.
 *
 * Retries any unrecognised error (default-true) so genuine transient
 * network / 5xx failures still benefit from the link's retry budget;
 * permanent failures are filtered via three signals, in order:
 *   1. Numeric `statusCode` (Apollo Client 4's `ServerError`)
 *   2. `errors[].extensions.code` (GraphQL response auth codes)
 *   3. Substring match on `message` (fallback for link errors that
 *      surface auth codes only in their message string)
 */
export declare function shouldRetryApolloError(error: unknown): boolean;
export declare function createApolloClient(options: CreateApolloClientOptions): ApolloClient;
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