import type { MotionFeel, MotionTransform } from './types';
export type SpringConfig = {
    stiffness: number;
    damping: number;
    mass: number;
    restSpeed: number;
    restDelta: number;
};
export type SpringEstimate = {
    settleTimeMs: number;
    overshoot: number;
    bounceCount: number;
};
export declare const SPRING_PRESETS: Record<MotionFeel, SpringConfig>;
export declare function estimateSpring(config: SpringConfig): SpringEstimate;
export declare function sampleSpringKeyframes(transform: MotionTransform, config: SpringConfig): {
    keyframes: Keyframe[];
    durationMs: number;
    estimate: SpringEstimate;
};
export declare function toTransformString(transform: MotionTransform): string;