export declare namespace TweenTools {
    /**
     *
     * @param instance
     * @param tween_info
     * @param properties properties to tween
     * @param play autoplay
     * @param await auto tween.Completed.Wait();
     * @returns
     */
    function CreateTween<T extends Instance>(instance: T, tween_info: TweenInfo, properties: Partial<ExtractMembers<T, Tweenable>>, play?: boolean, await?: boolean): Tween;
    type CustomTweenable = Tweenable | string;
    /**lerps the value with alpha */
    function LerpValue<T extends CustomTweenable>(start_value: T, target_value: T, alpha: number): T;
    /**
     * tweens value with EasingStyle / EasingDirection
     * @param start_value
     * @param target_value
     * @param alpha
     * @param easing_style
     * @param easing_direction
     * @returns
     */
    function TweenValue<T extends CustomTweenable>(start_value: T, target_value: T, alpha: number, easing_style?: CastsToEnum<Enum.EasingStyle>, easing_direction?: CastsToEnum<Enum.EasingDirection>): T;
}