/**
 * JWT Bearer Token Authenticator
 *
 * Provides authentication headers using a JWT.
 * The token is opaque to the SDK - it's simply passed as a Bearer token.
 */
export declare class JWTAuthenticator {
    private token;
    constructor(token: string);
    /**
     * Updates the JWT dynamically without creating a new authenticator instance
     *
     * @param newToken - The new JWT to use for authentication
     * @throws {Error} If the new token is empty or null
     */
    updateToken(newToken: string): void;
    /**
     * Gets authentication headers for API requests
     * @returns Authentication headers with Bearer token
     */
    getAuthHeaders(): Promise<Record<string, string>>;
}
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