import type { Address } from 'abitype';
import type { Client } from '../../clients/createClient.js';
import type { Transport } from '../../clients/transports/createTransport.js';
import type { ErrorType } from '../../errors/utils.js';
import type { BlockTag } from '../../types/block.js';
import type { Chain } from '../../types/chain.js';
import type { STORAGE_KEY } from '../../types/components.js';
import type { Hash, Hex } from '../../types/misc.js';
import type { RequestErrorType } from '../../utils/buildRequest.js';
export type GetStorageAtParameters = {
    contract_address: Address;
    key: Hex;
} & ({
    /** Hash of the block. */
    block_hash?: Hash | undefined;
    block_number?: undefined;
    block_tag?: undefined;
} | {
    block_hash?: undefined;
    /** The block number. */
    block_number?: number | undefined;
    block_tag?: undefined;
} | {
    block_hash?: undefined;
    block_number?: undefined;
    /** The block tag. Defaults to 'latest'. */
    block_tag?: BlockTag | undefined;
});
export type GetStorageAtReturnType = STORAGE_KEY;
export type GetStorageAtErrorType = RequestErrorType | ErrorType;
/**
 * Returns the value from a storage slot at a given address.
 *
 * - Docs: https://viem.sh/docs/contract/getStorageAt
 * - JSON-RPC Methods: [`eth_getStorageAt`](https://ethereum.org/en/developers/docs/apis/json-rpc/#eth_getstorageat)
 *
 * @param client - Client to use
 * @param parameters - {@link GetStorageAtParameters}
 * @returns The value of the storage slot. {@link GetStorageAtReturnType}
 *
 * @example
 * import { createPublicClient, http } from 'viem'
 * import { mainnet } from 'viem/chains'
 * import { getStorageAt } from 'viem/contract'
 *
 * const client = createPublicClient({
 *   chain: mainnet,
 *   transport: http(),
 * })
 * const code = await getStorageAt(client, {
 *   address: '0xFBA3912Ca04dd458c843e2EE08967fC04f3579c2',
 *   slot: toHex(0),
 * })
 */
export declare function getStorageAt<TChain extends Chain | undefined>(client: Client<Transport, TChain>, { contract_address, block_hash, block_number, block_tag, key, }: GetStorageAtParameters): Promise<GetStorageAtReturnType>;
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