Streaming individual features

Works in both NodeJS and the browser.

Load Next Feature

const url = "https://cdn.rawgit.com/mbostock/shapefile/master/test/points.shp"

const points = new ShpToGeoJson({
  remotePath: url
})

let stream = null
let featureIterator = null
const l = L.geoJSON(null).addTo(map)

points.load()
.then(() => {
  stream = points.streamGeoJsonFeatures()
})

// Our function that runs on the button click
function loadNext () {
  // If the generator is done we do nothing
  if (featureIterator.done) return
  
  // call stream.next() to get the next feature
  featureIterator = stream.next()
  const feature = featureIterator.value
  l.addData(feature)
}