import * as THREE from 'three';
import type { AnimationController, FrameLoop } from '../types.js';
/**
 * Wrap an `AnimationMixer` and its actions with `play`/`crossfade`/`stop` and
 * a `tick(ctx)` that advances by `ctx.delta`. Pass a `FrameLoop` to
 * auto-register the tick so playback follows the render loop.
 *
 * @param root - Object the mixer binds to (the .glb scene or a procedural prop).
 * @param clips - Clips to expose as named actions.
 * @param loop - When given, `tick` auto-registers via `registerUpdate`.
 * @returns An `AnimationController`. `dispose()` unregisters the tick, stops
 * all actions, and uncaches the root so nothing leaks.
 * @remarks One mixer per animated root; cost scales with active tracks.
 * Crossfades blend on the CPU.
 * @example
 * const anim = createAnimationController(model.scene, model.animations, ctx.loop)
 * anim.play('walk', { fadeIn: 0.3 })
 */
export declare function createAnimationController(root: THREE.Object3D, clips?: THREE.AnimationClip[], loop?: FrameLoop): AnimationController;
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