import { parseUnits, maxUint256 } from "viem";
import type { LendingPosition, SupportedChain } from "../../types/index.js";
/**
 * Fetch the fully-resolved Aave V3 lending position on a single chain.
 * Returns null if the user has no Aave activity OR the RPC returned empty data for any of
 * the required reads (batching mis-handling, rate-limit, transient). The caller treats a
 * null result as "no position on this chain" — safer than exploding the whole portfolio.
 */
export declare function getAaveLendingPosition(wallet: `0x${string}`, chain: SupportedChain): Promise<LendingPosition | null>;
/**
 * Simulate a delta to the lending position and return the projected health factor.
 * We work in USD space: newHF = (newCollateral × liqThreshold) / newDebt.
 */
export declare function simulateHealthFactorChange(base: LendingPosition, action: "add_collateral" | "remove_collateral" | "borrow" | "repay", deltaUsd: number): {
    newHealthFactor: number;
    newCollateralUsd: number;
    newDebtUsd: number;
    safe: boolean;
};
/** Export a tiny helper for action builders. */
export declare function getAavePoolAddress(chain: SupportedChain): Promise<`0x${string}`>;
export { maxUint256, parseUnits };