/**
 * Measurement helper for the price-range / measure tool (TradingView-style).
 */
export interface MeasurePoint {
    x: number;
    y: number;
}
export interface Measurement {
    /** Absolute price change (end - start) */
    change: number;
    /** Percentage change relative to the start price */
    percent: number;
    /** Number of bars spanned (rounded X distance) */
    bars: number;
    /** True when the range moves up (change >= 0) */
    up: boolean;
}
export declare function computeMeasurement(a: MeasurePoint, b: MeasurePoint): Measurement;
export declare function formatMeasurement(m: Measurement): string;
/** Compact price formatting used for level labels. */
export declare function formatPrice(value: number): string;