import type { ChartViewportInteractionConfig, ResolvedChartViewportInteractionConfig } from "./types";
export declare const resolveChartViewportInteractionConfig: (viewportInteraction?: boolean | ChartViewportInteractionConfig) => ResolvedChartViewportInteractionConfig;
export declare const getChartViewportPanDeltaPoints: ({ currentLocationX, plotWidth, startLocationX, visibleCount }: {
    currentLocationX: number;
    plotWidth: number;
    startLocationX: number;
    visibleCount: number;
}) => number;
export declare const getChartViewportPinchZoomFactor: ({ scale, sensitivity }: {
    scale: number;
    sensitivity: number;
}) => number;
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