import type { ReducedMotionOverride } from '../a11y/config';
import type { Simulation } from './simulation';
export interface DecayOptions {
    /** Per-animation override of the reduced-motion behavior. */
    reducedMotion?: ReducedMotionOverride;
    /** Initial velocity in units/s; defaults to the value's current velocity. */
    velocity?: number;
    /** Exponential time constant, in ms. Higher = longer glide. Total distance ~ v0 * tau. */
    timeConstant?: number;
    /** Rest when |velocity| < restSpeed (units/s). */
    restSpeed?: number;
    /** Optional clamp boundary: crossing it turns the glide into a spring toward the edge. */
    min?: number;
    max?: number;
    bounceStiffness?: number;
    bounceDamping?: number;
    restDelta?: number;
}
export declare function decaySimulation(options?: DecayOptions): Simulation;
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