/**
 *
 * @param high
 * @param low
 * @param close
 * @param q_period
 * @param r_period
 * @param s_period
 * @param size
 * @returns
 */
export declare function smi(high: Array<number>, low: Array<number>, close: Array<number>, q_period: number, r_period: number, s_period: number, size?: number): Promise<number[]>;