/** Type representing an easing function that takes a single numeric parameter and returns a numeric result. */
export type EasingFunction = (x: number) => number;
/** Type representing an easing type, which can be either a predefined easing function or a custom easing function. */
export type Easing = keyof Easings | EasingFunction;
/**
 * Class that provides various easing functions for tweening animations.
 * For more info on these easing functions, check https://easings.net.
 */
export declare class Easings {
    /** The default easing function used when no easing is specified. */
    static DEFAULT_EASING: keyof Easings;
    linear(x: number): number;
    easeInSine(x: number): number;
    easeOutSine(x: number): number;
    easeInOutSine(x: number): number;
    easeInQuad(x: number): number;
    easeOutQuad(x: number): number;
    easeInOutQuad(x: number): number;
    easeInCubic(x: number): number;
    easeOutCubic(x: number): number;
    easeInOutCubic(x: number): number;
    easeInQuart(x: number): number;
    easeOutQuart(x: number): number;
    easeInOutQuart(x: number): number;
    easeInQuint(x: number): number;
    easeOutQuint(x: number): number;
    easeInOutQuint(x: number): number;
    easeInExpo(x: number): number;
    easeOutExpo(x: number): number;
    easeInOutExpo(x: number): number;
    easeInCirc(x: number): number;
    easeOutCirc(x: number): number;
    easeInOutCirc(x: number): number;
    easeInBack(x: number): number;
    easeOutBack(x: number): number;
    easeInOutBack(x: number): number;
    easeInElastic(x: number): number;
    easeOutElastic(x: number): number;
    easeInOutElastic(x: number): number;
    easeInBounce(x: number): number;
    easeOutBounce(x: number): number;
    easeInOutBounce(x: number): number;
}
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