export type WidgetLayoutSize = {
    width: number;
    height: number;
};
export type WidgetLayoutCubicBezier = readonly [
    x1: number,
    y1: number,
    x2: number,
    y2: number
];
export type WidgetLayoutInstantSizeTransition = {
    kind: "instant";
    durationMs: 0;
};
export type WidgetLayoutTimedSizeTransition = {
    kind: "timed";
    durationMs: number;
    easing: {
        kind: "cubic-bezier";
        points: WidgetLayoutCubicBezier;
    };
};
export type WidgetLayoutSizeTransition = WidgetLayoutInstantSizeTransition;
export type WidgetLayoutSizeUpdate = {
    size: WidgetLayoutSize;
    transition: WidgetLayoutSizeTransition;
};
export type WidgetLayoutTimedSizeUpdate = {
    size: WidgetLayoutSize;
    transition: WidgetLayoutTimedSizeTransition;
};
export declare const INSTANT_WIDGET_LAYOUT_SIZE_TRANSITION: WidgetLayoutInstantSizeTransition;
export declare function isWidgetLayoutCubicBezier(points: unknown): points is WidgetLayoutCubicBezier;
export declare function toInstantWidgetLayoutSizeUpdate(size: WidgetLayoutSize): WidgetLayoutSizeUpdate;
export declare function toTimedWidgetLayoutSizeTransition(input: {
    durationMs: number;
    easing: WidgetLayoutCubicBezier;
}): WidgetLayoutTimedSizeTransition;
export declare function toTimedWidgetLayoutSizeUpdate(input: {
    size: WidgetLayoutSize;
    durationMs: number;
    easing: WidgetLayoutCubicBezier;
}): WidgetLayoutTimedSizeUpdate;
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