import { type SharedValue } from "react-native-reanimated";
export declare const MODE_BLEND_DURATION_MS = 300;
export interface ModeBlendState {
    /** 0 = fully line, 1 = fully candle */
    modeBlend: SharedValue<number>;
    /** line opacity = reveal.lineOpacity * (1 - modeBlend) */
    lineGroupOpacity: SharedValue<number>;
    /** candle opacity = reveal.lineOpacity * modeBlend */
    candleGroupOpacity: SharedValue<number>;
}
/**
 * Animated crossfade between line and candle chart layers.
 *
 * `modeBlend` animates 0→1 when `isCandle` becomes true, 1→0 when false.
 * The derived opacities multiply by `lineOpacity` from `useChartReveal`
 * so the reveal and mode-switch animations compose correctly.
 */
export declare function useModeBlend(isCandle: boolean, lineOpacity: SharedValue<number>, 
/** Crossfade duration (ms). Default {@link MODE_BLEND_DURATION_MS}; `0` snaps. */
duration?: number): ModeBlendState;
//# sourceMappingURL=useModeBlend.d.ts.map