import Premia from '../premia';
/**
 * BaseAPI is an abstract base class providing a common structure for all APIs in the system.
 *
 * All APIs extending this class can access the Premia contract via the 'premia' property.
 *
 * @property {Premia} premia - An instance of the Premia SDK.
 */
export declare abstract class BaseAPI {
    /**
     * The Premia SDK instance.
     */
    readonly premia: Premia;
    /**
     * The current index of quote streams. Used to cancel stale streams.
     */
    protected streamIndex: number;
    /**
     * Construct a new BaseAPI object.
     * @param {Premia} premia - An instance of the Premia SDK.
     */
    constructor(premia: Premia);
    /**
     * Cancels all ongoing streams.
     *
     * @returns {Promise<void>}
     */
    cancelAllStreams(): Promise<void>;
}