/**
 * AnimationTrait.ts
 *
 * Declarative animation attachment for HoloScript+ nodes.
 * Allows any node to have animations defined as traits.
 *
 * @trait animate
 */
import { AnimationEngine } from './AnimationEngine';
import { SpringConfig } from './SpringAnimator';
export interface HSPlusNode {
    id?: string;
    properties?: Record<string, unknown>;
}
export interface TraitHandler<TConfig> {
    name: string;
    defaultConfig: TConfig;
    onAttach(node: HSPlusNode, config: TConfig, context: unknown): void;
    onDetach(node: HSPlusNode, config: TConfig, context: unknown): void;
    onUpdate(node: HSPlusNode, config: TConfig, context: unknown, delta: number): void;
}
export interface AnimationTraitConfig {
    clips?: AnimationClipDef[];
    springs?: SpringDef[];
    autoPlay: boolean;
}
export interface AnimationClipDef {
    property: string;
    keyframes: Array<{
        time: number;
        value: number;
        easing?: string;
    }>;
    duration: number;
    loop?: boolean;
    pingPong?: boolean;
    delay?: number;
}
export interface SpringDef {
    property: string;
    target: number;
    preset?: string;
    config?: Partial<SpringConfig>;
}
export declare function getSharedAnimationEngine(): AnimationEngine;
export declare const animationTraitHandler: TraitHandler<AnimationTraitConfig>;
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