/**
 * OAuth 1.0 client for Yahoo Fantasy Sports API public requests
 *
 * Implements 2-legged OAuth 1.0 with HMAC-SHA1 signing for accessing
 * public endpoints without user authorization.
 *
 * @module
 */
/**
 * OAuth 1.0 signature method
 */
export type OAuth1SignatureMethod = 'HMAC-SHA1' | 'PLAINTEXT';
/**
 * OAuth 1.0 parameters for request signing
 */
export interface OAuth1Params {
    oauth_consumer_key: string;
    oauth_nonce: string;
    oauth_signature_method: string;
    oauth_timestamp: number;
    oauth_version: string;
    oauth_signature?: string;
}
/**
 * OAuth 1.0 client for 2-legged authentication (public mode)
 *
 * This client implements OAuth 1.0 request signing for accessing Yahoo's
 * public Fantasy Sports API endpoints without requiring user authorization.
 *
 * According to Yahoo's documentation, public requests use 2-legged OAuth,
 * which means signing requests with your consumer key/secret but without
 * an access token.
 *
 * @example
 * ```typescript
 * const oauth1 = new OAuth1Client(
 *   'your-consumer-key',
 *   'your-consumer-secret'
 * );
 *
 * // Sign a request
 * const signedUrl = oauth1.signRequest(
 *   'GET',
 *   'https://fantasysports.yahooapis.com/fantasy/v2/game/nfl'
 * );
 *
 * // Make the request
 * const response = await fetch(signedUrl);
 * ```
 */
export declare class OAuth1Client {
    private consumerKey;
    private consumerSecret;
    /**
     * Creates a new OAuth 1.0 client for public API access
     *
     * @param consumerKey - OAuth consumer key (Client ID) from Yahoo Developer
     * @param consumerSecret - OAuth consumer secret (Client Secret) from Yahoo Developer
     * @throws {ConfigError} If consumer key or secret is missing
     */
    constructor(consumerKey: string, consumerSecret: string);
    /**
     * Signs a request URL using OAuth 1.0 HMAC-SHA1 signature
     *
     * This implements 2-legged OAuth (no user token) for public endpoints.
     * The signed URL can be used directly with fetch() or other HTTP clients.
     *
     * @param method - HTTP method (GET, POST, PUT, DELETE)
     * @param url - Full URL to sign (without query parameters if using params object)
     * @param params - Optional additional parameters to include in signature
     * @param signatureMethod - Signature method (default: HMAC-SHA1)
     * @returns Signed URL with OAuth parameters appended
     *
     * @example
     * ```typescript
     * const signedUrl = oauth1.signRequest(
     *   'GET',
     *   'https://fantasysports.yahooapis.com/fantasy/v2/game/nfl'
     * );
     * ```
     */
    signRequest(method: string, url: string, params?: Record<string, string>, signatureMethod?: OAuth1SignatureMethod): string;
    /**
     * Generates OAuth signature for request
     *
     * @param method - HTTP method
     * @param baseUrl - Base URL without query parameters
     * @param params - All parameters to include in signature
     * @param signatureMethod - Signature method
     * @returns OAuth signature
     */
    private generateSignature;
    /**
     * Generates a random nonce for OAuth request
     *
     * @returns Random nonce string
     */
    private generateNonce;
    /**
     * Generates HMAC-SHA1 signature
     *
     * Uses the Web Crypto API (available in Node.js 15+ and browsers)
     *
     * @param data - Data to sign
     * @param key - Signing key
     * @returns Base64-encoded signature
     */
    private hmacSha1;
    /**
     * Gets the OAuth parameters for debugging
     *
     * @returns Object containing consumer key and signature method
     */
    getDebugInfo(): {
        consumerKey: string;
        signatureMethod: string;
    };
}
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