import type { Mesh, Object3D } from "three";
import type { Entity } from "../core/Entity";
export declare type ValueOf<T> = T[keyof T];
export declare const defined: <T>(value: T | undefined) => value is T;
export declare type NonEmptyArray<T> = [T, ...T[]];
export declare type EntityObject = Object3D & {
    entity?: Entity;
};
export declare type EntityMesh = Mesh & {
    entity?: Entity;
};
export declare type Mutable<T> = {
    -readonly [P in keyof T]: T[P];
};
export declare const isObject: (obj: unknown) => obj is Record<string, unknown>;