import { Service } from './service';
export declare class Curves extends Service {
    curveTypes: {
        curveLinear: import('d3-shape').CurveFactory;
        curveLinearClosed: import('d3-shape').CurveFactory;
        curveBasis: import('d3-shape').CurveFactory;
        curveBasisClosed: import('d3-shape').CurveFactory;
        curveBasisOpen: import('d3-shape').CurveFactory;
        curveBundle: import('d3-shape').CurveBundleFactory;
        curveCardinal: import('d3-shape').CurveCardinalFactory;
        curveCardinalClosed: import('d3-shape').CurveCardinalFactory;
        curveCardinalOpen: import('d3-shape').CurveCardinalFactory;
        curveCatmullRom: import('d3-shape').CurveCatmullRomFactory;
        curveCatmullRomClosed: import('d3-shape').CurveCatmullRomFactory;
        curveCatmullRomOpen: import('d3-shape').CurveCatmullRomFactory;
        curveMonotoneX: import('d3-shape').CurveFactory;
        curveMonotoneY: import('d3-shape').CurveFactory;
        curveNatural: import('d3-shape').CurveFactory;
        curveStep: import('d3-shape').CurveFactory;
        curveStepAfter: import('d3-shape').CurveFactory;
        curveStepBefore: import('d3-shape').CurveFactory;
    };
    getD3Curve(): any;
}