import { GraphQLFetch } from '../graphQLFetch/graphQLFetch';
type Fetch = typeof fetch;
/**
 * @deprecated Use useBlockPreviewFetch() without argument instead
 * @param apiUrl the API URL
 */
export declare function useBlockPreviewFetch(apiUrl: string): {
    fetch: Fetch;
    graphQLFetch: GraphQLFetch;
};
export declare function useBlockPreviewFetch(apiUrl?: string | undefined): {
    fetch: Fetch;
    graphQLFetch?: GraphQLFetch;
};
export {};
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