import * as React from "react";
export type AddEthereumChainParameter = {
    chainId: string;
    blockExplorerUrls?: string[];
    chainName?: string;
    iconUrls?: string[];
    nativeCurrency?: {
        name: string;
        symbol: string;
        decimals: number;
    };
    rpcUrls?: string[];
};
type MetaMaskInitializing = {
    account: null;
    chainId: null;
    status: "initializing";
};
type MetaMaskUnavailable = {
    account: null;
    chainId: null;
    status: "unavailable";
};
type MetaMaskNotConnected = {
    account: null;
    chainId: string;
    status: "notConnected";
};
type MetaMaskConnecting = {
    account: null;
    chainId: string;
    status: "connecting";
};
type MetaMaskConnected = {
    account: string;
    chainId: string;
    status: "connected";
};
export type MetaMaskState = MetaMaskInitializing | MetaMaskUnavailable | MetaMaskNotConnected | MetaMaskConnecting | MetaMaskConnected;
export type IMetaMaskContext = MetaMaskState & {
    /**
     * Connect the application to MetaMask
     * @returns Array of connected accounts when connection is successful, `null` if method not ready to be used
     */
    connect: () => Promise<string[] | null>;
    /**
     * Request addition of a new chain to MetaMask
     * @dev See [MetaMask API](https://docs.metamask.io/wallet/reference/rpc-api/#wallet_addethereumchain) or [EIP-3085](https://eips.ethereum.org/EIPS/eip-3085) for full description
     * @param parameters The chain parameters
     * @example ```ts
     * const { addChain } = useMetaMask();
     * const GNOSIS_MAINNET_PARAMS = {
     *  chainId: "0x64",
     *  chainName: "Gnosis",
     *  nativeCurrency: {
     *    name: "xDai",
     *    symbol: "XDAI",
     *    decimals: 18,
     *  },
     *  rpcUrls: ["https://rpc.gnosischain.com/"],
     *  blockExplorerUrls: ["https://gnosisscan.io/"],
     * }
     * // Add Gnosis chain to MetaMask
     * const onClick = () => addChain(GNOSIS_MAINNET_PARAMS);
     * ```
     */
    addChain: (parameters: AddEthereumChainParameter) => Promise<void>;
    /**
     * Request a switch of network
     * @dev See [MetaMask API](https://docs.metamask.io/wallet/reference/rpc-api/#wallet_switchethereumchain) or [EIP-3326](https://ethereum-magicians.org/t/eip-3326-wallet-switchethereumchain/5471) for full description
     * @dev An error with code `4902` will be thrown if the chain has not been added to MetaMask. In this case, one would need to use the `addChain` method in order to add the chain to MetaMask and switch to it.
     * @param chainId Chain ID of the network in hexadecimal
     * @example ```ts
     * const { addChain } = useMetaMask();
     * // Switch chain to Ethereum Mainnet
     * const onClick = () => switchChain("0x1");
     * ```
     */
    switchChain: (chainId: string) => Promise<void>;
    ethereum: any;
};
export declare const MetamaskContext: React.Context<IMetaMaskContext | undefined>;
export {};