export declare const restrictAxis: (axis: boolean[]) => (original: number[], current: number[]) => number[];
/**
 * Applies a drag handler to the specified target element.
 */
export declare const geoInertiaDrag: (target: any, render: any, projection: any, options: any) => {
    position: number[];
    velocity: number[];
    timer: import("d3").Timer;
    time: number;
    t: number;
    start: (ev: any) => void;
    move: (ev: any) => void;
    end: (ev: any) => any;
};
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