import { SVGInstance } from "../../../node/instance/SVGInstance.js";
export declare class PreserveAspectRatio extends SVGInstance {
    preserveAspectRatio(): {
        align: string;
        meetOrSlice: string | undefined;
    } | null;
    preserveAspectRatio(align: "none" | "xMinYMin" | "xMidYMin" | "xMaxYMin" | "xMinYMid" | "xMidYMid" | "xMaxYMid" | "xMinYMax" | "xMidYMax" | "xMaxYMax", meetOrSlice: "meet" | "slice"): this;
}