import { ethers } from "ethers";
import { StorageLayoutCacheOptions } from "./types";
/**
 * Generate mock approval data for a given ERC20 token
 * @param provider - The JsonRpcProvider instance
 * @param tokenAddress - The address of the ERC20 token
 * @param ownerAddress - The address of the owner
 * @param spenderAddress - The address of the spender
 * @param mockAddress - The address to mock the approval for
 * @param mockApprovalAmount - The amount to mock the approval for
 * @param maxSlots - The maximum number of slots to search
 * @returns An object containing the slot and approval data
 *
 */
export declare const generateMockApprovalData: (provider: ethers.providers.JsonRpcProvider, { tokenAddress, ownerAddress, spenderAddress, mockAddress, mockApprovalAmount, maxSlots, useFallbackSlot, ...cacheOptions }: {
    tokenAddress: string;
    ownerAddress: string;
    spenderAddress: string;
    mockAddress: string;
    mockApprovalAmount: string;
    maxSlots?: number | undefined;
    useFallbackSlot?: boolean | undefined;
} & StorageLayoutCacheOptions) => Promise<{
    slot: string;
    approval: string;
    isVyper: boolean;
}>;
/**
 * Get the storage slot for a given ERC20 token approval
 * @param provider - The JsonRpcProvider instance
 * @param erc20Address - The address of the ERC20 token
 * @param ownerAddress - The address of the owner, used to find the approval slot
 * @param spenderAddress - The address of the spender, used to find the approval slot
 * @param maxSlots - The maximum number of slots to search
 * @returns The slot for the approval
 *
 * - This uses a brute force approach similar to the balance slot search. See the balance slot search comment for more details.
 */
export declare const getErc20ApprovalStorageSlot: (provider: ethers.providers.JsonRpcProvider, erc20Address: string, ownerAddress: string, spenderAddress: string, maxSlots: number, useFallbackSlot?: boolean, options?: StorageLayoutCacheOptions) => Promise<{
    slot: string;
    slotHash: string;
    isVyper: boolean;
}>;
/**
 * Get the approval for a given ERC20 token
 * @param provider - The JsonRpcProvider instance
 * @param address - The address of the ERC20 token
 * @param ownerAddress - The address of the owner
 * @param spenderAddress - The address of the spender
 * @returns The approval amount
 */
export declare const getErc20Approval: (provider: ethers.providers.JsonRpcProvider, address: string, ownerAddress: string, spenderAddress: string) => Promise<ethers.BigNumber>;
//# sourceMappingURL=approval.d.ts.map