/**
 * Momentum Indicator
 */
import type { OHLCV } from "../../types/index.js";
export declare function calculateMomentum(data: OHLCV[], period?: number): number[];
/**
 * Detect momentum cross above zero
 */
export declare function momentumCrossAboveZero(momentum: number[]): boolean;
/**
 * Detect momentum cross below zero
 */
export declare function momentumCrossBelowZero(momentum: number[]): boolean;
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