import { BodyInterface, ConstraintClamping, WorldInterface } from '../types';
import { ConstraintBase } from './constraint.base';
export declare class SpiralSpringConstraint extends ConstraintBase {
    readonly world: WorldInterface;
    readonly bodyA: BodyInterface;
    readonly bodyB: BodyInterface;
    readonly angle: number;
    readonly stiffness: number;
    readonly extinction: number;
    constructor(world: WorldInterface, bodyA: BodyInterface, bodyB: BodyInterface, angle: number, stiffness: number, extinction: number);
    getJacobian(out: Float32Array): void;
    getPushFactor(): number;
    getClamping(): ConstraintClamping;
}