@cdeshpande/geo-utils/__tests__/haversine.test.ts

A lightweight, blazing-fast TypeScript library for calculating distances (Haversine) and geospatial math with support for kilometers and miles.

import { haversineDistance } from '../src/haversine';

describe('Haversine Distance', () => {
    it('calculates distance in kilometers', () => {
        const dist = haversineDistance(51.5, 0, 38.8, -77.1, 'km');
        expect(Math.round(dist)).toBeCloseTo(5918, 0);
    });

    it('calculates distance in miles', () => {
        const dist = haversineDistance(51.5, 0, 38.8, -77.1, 'miles');
        expect(Math.round(dist)).toBeCloseTo(3677, 0);
    });
});