/// <reference types="deck.gl" />
import { ModifyMode, FeatureOf, LineString, Point } from '@nebula.gl/edit-modes';
import { Viewport } from '@deck.gl/core';
/**
 * Show helper only when the point is close enough to the line.
 */
export declare class ModifyModeExtended extends ModifyMode {
    getNearestPoint(line: FeatureOf<LineString>, inPoint: FeatureOf<Point>, viewport: Viewport | null | undefined): import("@nebula.gl/edit-modes/dist-types/utils").NearestPointType | undefined;
    handleClick(event: any, props: any): void;
}