import { EvmWalletProvider } from "../../../walletProviders";
/**
 * Fetches Morpho Blue user data (positions, vaults, and transactions) by wallet address.
 *
 * This function queries the Morpho subgraph for a user's detailed activity and positions
 * using the connected wallet's address on the supported chain/network.
 *
 * It retrieves:
 * - Market positions (supply, borrow, collateral, PnL)
 * - Vault positions (assets, shares, USD value)
 * - Transaction history
 *
 * @param walletProvider - The connected EVM wallet provider instance.
 *
 * @returns A user object from the subgraph including positions and transactions,
 *          or `null` if the user has no data or address is not found.
 *
 * @throws Will throw an error if:
 *  - Network/chainId is missing or invalid.
 *  - The network is not supported by the Morpho subgraph.
 *  - The subgraph query fails or returns invalid data.
 */
export declare const fetchUserDataByAddress: (walletProvider: EvmWalletProvider) => Promise<any>;