import type { Address } from "@morpho-org/blue-sdk";
import { type ERC20ApprovalAction, type Transaction } from "../../types";
/**
 * Get token "requirement" for approval.
 *
 * Verify if the allowance is enough on the spender contract.
 * => If not, approve the token to the spender contract with classic approval transaction on the required amount.
 * => If the allowance is enough, return an empty array.
 *
 * Handle logic for reset approval before approving (if needed).
 *
 * @param params - Destructured object with:
 * @param params.address - ERC20 token address.
 * @param params.chainId - Chain/network id.
 * @param params.args - Object with:
 * @param params.args.spendAmount - Spend amount required for the action.
 * @param params.args.approvalAmount - Approval amount to be approved.
 * @param params.args.spender - Spender contract address.
 * @param params.allowances - Allowance for the spender contract.
 * @returns An array of requirement transaction object.
 */
export declare const getRequirementsApproval: (params: {
    address: Address;
    chainId: number;
    args: {
        approvalAmount: bigint;
        spendAmount: bigint;
        spender: Address;
    };
    allowances: bigint;
}) => Readonly<Transaction<ERC20ApprovalAction>>[];