import { type NDKFilter, type NDKRawEvent } from '@nostr-dev-kit/ndk';
export declare class CyphertapAPI {
    #private;
    private static instance;
    private _isLoggedIn;
    private _isReady;
    private _npub;
    constructor();
    get isLoggedIn(): boolean;
    get isReady(): boolean;
    get balance(): number;
    get npub(): string | null;
    static getInstance(): CyphertapAPI;
    getUserNpub(): string | null;
    getUserHex(): string | null;
    createLightningInvoice(amount: number, description?: string): Promise<{
        bolt11: string;
    }>;
    sendLightningPayment(bolt11: string): Promise<{
        success: boolean;
        preimage?: string;
    }>;
    generateEcashToken(amount: number, memo?: string): Promise<{
        token: string;
        mint?: string;
    }>;
    receiveEcashToken(token: string): Promise<{
        success: boolean;
        amount: number;
    }>;
    publishTextNote(content: string): Promise<{
        id: string;
        pubkey: string;
    }>;
    publishEvent(event: Partial<NDKRawEvent>): Promise<{
        id: string;
        pubkey: string;
    }>;
    subscribe(filter: NDKFilter, callback: (event: {
        id: string;
        pubkey: string;
        content: string;
        kind: number;
        created_at: number;
    }) => void): () => void;
    signEvent(event: Partial<NDKRawEvent>): Promise<{
        id: string;
        pubkey: string;
        signature: string;
    }>;
    encrypt(content: string, recipientPubkey: string): Promise<string>;
    decrypt(encryptedContent: string, senderPubkey: string): Promise<string>;
    getConnectionStatus(): {
        connected: number;
        total: number;
    };
}
export declare const cyphertap: CyphertapAPI;