/**
 * Type definition of an _Easing function_.
 *
 * @param   x   Number between [0, 1] where 0 is start of animation and 1 is end of animation.
 * @returns     Number between [0, 1] where 0 is start of animation and 1 is end of animation.
 */
export declare type EasingFunction = (x: number) => number;
/**
 * Collection of all implemented _Easing functions_.
 */
export declare const EasingFunctions: {
    /**
     * @easingFunction
     */
    linear: EasingFunction;
    /**
     * https://easings.net/#easeOutSine
     *
     * @easingFunction
     */
    easeOutSine: EasingFunction;
    /**
     * https://easings.net/#easeOutCubic
     *
     * @easingFunction
     */
    easeOutCubic: EasingFunction;
    /**
     * https://easings.net/#easeOutExpo
     *
     * @easingFunction
     */
    easeOutExpo: EasingFunction;
    /**
     * https://easings.net/#easeOutCirc
     *
     * @easingFunction
     */
    easeOutCirc: EasingFunction;
    /**
     * https://easings.net/#easeOutBack
     *
     * @easingFunction
     */
    easeOutBack: EasingFunction;
    /**
     * https://easings.net/#easeOutElastic
     *
     * @easingFunction
     */
    easeOutElastic: EasingFunction;
};
/**
 * Serialize easing function to a primitive data type that can be later deserialized.
 */
export declare const serializeEasing: (easingFunction: EasingFunction) => unknown;
/**
 * Deserialize an easing function that was serialized using `serializeEasing`.
 */
export declare const deserializeEasing: (serializedEasing: unknown) => EasingFunction | undefined;