export declare const GET_BLOCK: import("graphql").DocumentNode;
export declare const GET_BLOCKS: (timestamps: any) => import("graphql").DocumentNode;
export declare const PRICES_BY_BLOCK: (tokenAddress: any, blocks: any) => import("graphql").DocumentNode;
export declare const GET_LAST_BLOCK: import("graphql").DocumentNode;
export interface SubgraphBlock {
    number: number;
    hash: string;
    timestamp: number;
}
export interface SubgraphLastBlockResponse {
    _meta: {
        block: SubgraphBlock;
    };
}
/**
 * This hook get the block number, hash and timestamp of the last block via subgraph
 * @returns return simple data of the block
 */
export declare function useLastSubgraphBlock(): SubgraphBlock | undefined;
