import { type Address } from "@morpho-org/blue-sdk";
import type { Bundler3TokenSignatureRequirement, ERC20ApprovalAction, Transaction } from "../../../types/index.js";
interface GeneralAdapterPermit2Erc20Allowances {
    readonly permit2: bigint;
}
/**
 * Computes the Permit2 prerequisites for `GeneralAdapter1` to pull `amount` of `address`.
 *
 * Emits two ordered prerequisites:
 *
 * 1. A classic ERC-20 approval to the Permit2 contract (infinite, if not already in place).
 * 2. A Permit2 `Requirement` signed against `GeneralAdapter1`.
 *
 * The Permit2 signature is always requested for the exact transfer amount when this path is
 * selected. Permit2 allowance signatures overwrite the existing allowance, so relying on
 * residual Permit2-managed allowance would make the final transfer path depend on stale state and
 * could leave allowance behind after a partial spend.
 *
 * @param params.address - ERC-20 token address.
 * @param params.chainId - The chain the bundle targets.
 * @param params.permit2 - The Permit2 contract address for the chain.
 * @param params.args.amount - Required token amount.
 * @param params.erc20Allowances - Current ERC-20 allowances keyed by spender contract name.
 * @param params.permit2Nonce - Current Permit2 nonce for the token owner / token / GeneralAdapter1 tuple.
 * @returns Ordered list of approval transactions and/or `Requirement` objects to satisfy before
 *   bundling.
 * @throws {ApprovalAmountLessThanSpendAmountError} from the inner approval helper when its
 *   bookkeeping invariants break (should not happen with the values this function passes).
 * @example
 * ```ts
 * import { getChainAddresses } from "@morpho-org/morpho-sdk/addresses";
 * import { getGeneralAdapterRequirementsPermit2 } from "@morpho-org/morpho-sdk";
 *
 * const { permit2 } = getChainAddresses(1);
 * if (!permit2) throw new Error("Permit2 not configured for this chain");
 * const requirements = getGeneralAdapterRequirementsPermit2({
 *   address: USDC,
 *   chainId: 1,
 *   permit2,
 *   args: { amount: 1_000_000n },
 *   erc20Allowances: { permit2: 0n },
 *   permit2Nonce: 0n,
 * });
 * // requirements satisfies (Readonly<Transaction<ERC20ApprovalAction> | Bundler3TokenSignatureRequirement>)[]
 * ```
 */
export declare const getGeneralAdapterRequirementsPermit2: (params: {
    address: Address;
    chainId: number;
    permit2: Address;
    args: {
        amount: bigint;
    };
    erc20Allowances: GeneralAdapterPermit2Erc20Allowances;
    permit2Nonce: bigint;
}) => Readonly<Transaction<ERC20ApprovalAction> | Bundler3TokenSignatureRequirement>[];
export {};