Use turf.js to find all CharityNavigator services within a 50-mile radius/buffer of a city

index.js

import * as turf from '@turf/turf';

// Create a FeatureCollection from all of the resources
const featureCollection = turf.featureCollection(resources.features);

// Get the lat/long of the selected feature 
const point = turf.point(rows.length ? rows[0]?.geometry?.coordinates : [0, 0]);

// Create a 50-mile buffer around the selected point
const buffered = turf.buffer(point, 50, { units: 'miles' });

// Find all resource w/in the 50-mile buffer
const resourcesWithinBuffer = turf.pointsWithinPolygon(featureCollection, buffered);