Fetch shapefile, create GeoJSON

fetchGeoJSON.js

const fetch = require("node-fetch");
const jszip = require("jszip");
const shapefile = require("shapefile");

async function fetchGeoJSON(endpoint) {
  console.log(`🐞  Endpoint: ${endpoint}`);
  console.log(`🐞  Fetching..`);
  const res = await fetch(endpoint);
  const buffer = await res.buffer();
  console.log(`🐞  Un-zipping...`);
  const unzipped = await jszip.loadAsync(buffer);
  console.log(`🐞  Reading files...`);
  const { files = {} } = unzipped;
  const fileNames = Object.keys(files);
  const shpName = fileNames.find((d) => d.match(/\.shp$/));
  const dbfName = fileNames.find((d) => d.match(/\.dbf$/));
  const shpData = await unzipped.file(shpName).async("arraybuffer");
  const dbfData = await unzipped.file(dbfName).async("arraybuffer");
  console.log(`🐞  Reading shapefile...`);
  const geoJSON = await shapefile.read(shpData, dbfData);
  console.log(`🦀  Done!`);
}