interface Wallet {
    payInvoice(args: {
        invoice: string;
    }): Promise<{
        preimage: string;
    }>;
}

declare const fetchWithL402: (url: string, fetchArgs: RequestInit, options: {
    wallet: Wallet;
}) => Promise<Response>;

interface WwwAuthenticatePayload {
    token: string;
    invoice: string;
    [key: string]: string;
}
/**
 * Client: parse "www-authenticate" header from server response
 * @param input
 * @returns details from the header value (token or macaroon, invoice)
 */
declare const parseL402: (input: string) => WwwAuthenticatePayload;

type MacaroonPayload<T> = T & {
    paymentHash: string;
};
declare function issueL402Macaroon<T extends Record<string, unknown>>(secret: string, paymentHash: string, params?: T): Promise<string>;
declare function verifyL402Macaroon<T = unknown>(secret: string, token: string): Promise<MacaroonPayload<T>>;

/**
 * Server: create a WWW-Authenticate header for a given macaroon and invoice
 * @param args the macaroon/token and invoice generated for the client's request
 * @returns the header value
 */
declare const makeL402AuthenticateHeader: (args: {
    token?: string;
    invoice: string;
}) => string;
/**
 * Server: parse "authorization" header sent from client
 * @param input value from authorization header
 * @returns the macaroon and preimage
 */
declare function parseL402Authorization(input: string): {
    token: string;
    preimage: string;
} | null;

export { fetchWithL402, issueL402Macaroon, makeL402AuthenticateHeader, parseL402, parseL402Authorization, verifyL402Macaroon };
export type { MacaroonPayload };