import type { CharacterModel, VRMHumanBoneName } from './model/index.js';
import type { BvhCharacterPhysics } from './physics/index.js';
import type { AnimationAction } from 'three';
export type BoneMap = Record<string, VRMHumanBoneName>;
export declare function getIsMobileMediaQuery(): MediaQueryList | undefined;
export declare function isMobile(): boolean;
export type StartAnimationOptions = {
    fadeDuration?: number;
    sync?: boolean;
    paused?: boolean;
    crossFade?: boolean;
    layer?: string | Array<string | undefined>;
};
export declare function startAnimation(animation: AnimationAction, currentAnimations: CharacterModel['currentAnimations'], { crossFade, layer: layers, fadeDuration, paused, sync }?: StartAnimationOptions): (() => void) | undefined;
export declare function shouldJump(physics: BvhCharacterPhysics, lastJump: number, bufferTime?: number): boolean;