import { type Address } from "@morpho-org/blue-sdk";
import type { Client } from "viem";
import { type ERC20ApprovalAction, type Requirement, type Transaction } from "../../types";
type GetRequirementsBaseParams = {
    address: Address;
    chainId: number;
    supportDeployless?: boolean;
    args: {
        amount: bigint;
        from: Address;
    };
};
type GetRequirementsParams = (GetRequirementsBaseParams & {
    /** Signature-based approvals are not supported. Classic approval (transaction) will be used. */
    supportSignature: false;
}) | (GetRequirementsBaseParams & {
    /** Signature-based approvals are supported. Will try permit (EIP-2612), else fallback to permit2. */
    supportSignature: true;
    /** Allow simple permit if EIP-2612 is supported. Only applicable when `supportSignature` is `true`. */
    useSimplePermit?: boolean;
});
/**
 * Get token "requirement" for approval/permit before interacting with protocol.
 *
 * Three flows:
 * 1. If signature not supported, use classic approval (transaction).
 * 2. If signature supported, try simple permit (EIP-2612), else fallback to permit2.
 *
 * @param viemClient - The connected viem Client instance, with the correct chain and account.
 * @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.amount - Required token amount.
 * @param params.args.from - The account that will grant approval.
 * @param params.supportSignature - Whether signature-based approvals are supported. If true, will try to use permit or permit2.
 * @param params.supportDeployless - Whether to use deployless mode.
 * @param params.useSimplePermit - use simple permit if EIP-2612 is supported. Only available when `supportSignature` is `true`.
 * @returns Promise of array of approval transaction or requirement objects.
 */
export declare const getRequirements: (viemClient: Client, params: GetRequirementsParams) => Promise<(Readonly<Transaction<ERC20ApprovalAction>> | Requirement)[]>;
export {};