import type { UIAspectConfig, UIRangeConfig } from "../miscellaneous/miscellaneous";
import { UIBehaviorModule } from "./UIBehaviorModule";
/**
 * Animates particle scale over lifetime.
 *
 * Interpolates between scale anchors based on particle age. Requires at least 2 anchors.
 */
export declare class UIBehaviorScaleOverLife extends UIBehaviorModule<{
    builtin: "Matrix4";
}> {
    private readonly scales;
    private aspectInternal;
    /**
     * @param scales - Scale anchor points. Each accepts number, tuple, or range object
     * @param aspect - Width/height ratio. Accepts number or texture
     */
    constructor(scales: UIRangeConfig[], aspect?: UIAspectConfig);
    /** Width/height aspect ratio */
    get aspect(): number;
    /** Width/height aspect ratio */
    set aspect(value: UIAspectConfig);
}