/**
 * HD Wallet (Hierarchical Deterministic Wallet) support for IoTeX
 * Derivation path: m/44'/304'/account'/change/index
 */
import { HDWalletAccount } from '../types';
export declare class HDWallet {
    private hdWalletConfigFile;
    constructor(configDir?: string);
    /**
     * Create a new HD wallet with mnemonic
     */
    create(password: string, language?: 'english' | 'chinese'): Promise<string>;
    /**
     * Import HD wallet from mnemonic
     */
    import(mnemonic: string, password: string): Promise<void>;
    /**
     * Derive account from HD wallet
     */
    derive(password: string, account?: number, change?: number, index?: number): Promise<HDWalletAccount>;
    /**
     * Export mnemonic (requires password)
     */
    exportMnemonic(password: string): Promise<string>;
    /**
     * Delete HD wallet
     */
    delete(): void;
    /**
     * Check if HD wallet exists
     */
    exists(): boolean;
    /**
     * Update password for HD wallet
     */
    updatePassword(oldPassword: string, newPassword: string): Promise<void>;
    /**
     * Write encrypted mnemonic to file
     */
    private writeMnemonic;
    /**
     * Read and decrypt mnemonic from file
     */
    private readMnemonic;
    /**
     * Parse HD wallet path string (e.g., "0/0/0" or "hdw::0/0/0")
     */
    static parsePath(pathStr: string): {
        account: number;
        change: number;
        index: number;
    };
    /**
     * Get config file path
     */
    getConfigFile(): string;
}
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