import type { NostrSigner } from './types';
export interface OAuthStorage {
    savePkceState(state: {
        codeVerifier: string;
        nonce: string;
    }): void;
    loadPkceState(): {
        codeVerifier: string;
        nonce: string;
    } | null;
    clearPkceState(): void;
    saveAuthorizationHandle(handle: string): void;
    loadAuthorizationHandle(): string | null;
    clearAuthorizationHandle(): void;
}
export interface OAuthConfig {
    clientId: string;
    redirectUri: string;
    apiUrl?: string;
    scope?: string;
    storage: OAuthStorage;
    fetchImpl?: typeof fetch;
}
export interface OAuthResult {
    signer: NostrSigner;
    accessToken: string;
    refreshToken?: string;
}
export declare function buildOAuthUrl(config: OAuthConfig, options?: {
    defaultRegister?: boolean;
}): Promise<string>;
export declare function exchangeCode(code: string, state: string, config: OAuthConfig): Promise<OAuthResult>;
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