import type Wallet from "ethereumjs-wallet";
import type { CreateKey, GetFn, LocalStorage, SetAuthFn, SetUserFn } from "./types";
export declare class Hedgehog {
    getFn: GetFn;
    setAuthFn: SetAuthFn;
    setUserFn: SetUserFn;
    wallet: null | Wallet;
    localStorage: LocalStorage;
    createKey: CreateKey;
    ready: boolean;
    constructor(getFn?: GetFn, setAuthFn?: SetAuthFn, setUserFn?: SetUserFn, useLocalStorage?: boolean, localStorage?: any, createKey?: (encryptStr: string, ivHex: string) => Promise<import("./types").PrivateKey>);
    /**
     * Helper function to check if Hedgehog instance is ready.
     * Only needed if `useLocalStorage = true`
     * Otherwise, Hedgehog will be ready as soon as it is constructed.
     */
    isReady(): boolean;
    /**
     * Helper function to wait until Hedgehog instance is ready.
     * Only needed if `useLocalStorage = true`
     * Otherwise, Hedgehog will be ready as soon as it is constructed.
     */
    waitUntilReady(): Promise<void>;
    /**
     * Given user credentials, create a client side wallet and all other authentication artifacts,
     * call setFn to persist the artifacts to a server and return the wallet object
     * @param username username
     * @param password user password
     * @returns ethereumjs-wallet wallet object
     */
    signUp(username: string, password: string): Promise<Wallet>;
    /**
     * Generate new set of auth credentials to allow login
     * If the old password is included, the setAuthFn will include the old lookup key for deletion
     * @param username - username
     * @param password - new password
     */
    resetPassword(username: string, password: string): Promise<void>;
    /**
     * Generate new set of auth credentials to allow login and remove the old password
     * Note: Doesn't log out on error
     * @param username - username
     * @param password - new password
     * @param oldPassword - old password
     */
    changePassword(username: string, password: string, oldPassword: string): Promise<void>;
    /**
     * Given user credentials, attempt to get authentication artifacts from server using
     * getFn, create the private key using the artifacts and the user password
     * @param username username
     * @param password user password
     * @returns ethereumjs-wallet wallet object
     */
    login(username: string, password: string): Promise<Wallet>;
    /**
     * Confirms the user credentials given generate the same entropy after using artifacts from the server
     * @param username username
     * @param password user password
     * @returns whether or not the credentials are valid for the current user
     */
    confirmCredentials(username: string, password: string): Promise<boolean>;
    /**
     * Deletes the local client side wallet including entropy and all associated
     * authentication artifacts
     */
    logout(): Promise<void>;
    /**
     * Returns is the user has a client side wallet. If they do, calls can be made against
     * that wallet, if they don't the user has to login or signup
     * @returns true if the user has a client side wallet, false otherwise
     */
    isLoggedIn(): boolean;
    /**
     * Returns the current user wallet
     * @returns ethereumjs-wallet wallet object if a wallet exists, otherwise null
     */
    getWallet(): Wallet | null;
    /**
     * If a user refreshes or navigates away from the page and comes back later, this attempts
     * to restore the client side wallet from localStorage, if it exists
     * @returns If the user has a wallet client side, the wallet object is returned,
     *                        otherwise null is returned
     */
    restoreLocalWallet(): Promise<Wallet | null>;
    /**
     * Create a new client side wallet object without going through the signup flow. This is useful
     * if you need a temporary, read-only wallet that is ephemeral and does not need to be persisted
     * @param password user password
     * @returns ethereumjs-wallet wallet object
     */
    createWalletObj(password: string): Promise<Wallet>;
}