GeoJSON serialiser that doesn't explode your nested coordinate arrays

geojson-stringify.js

const replacerWrapper = val => val.replace(/\"\[/g, '[').replace(/\]\"/g,']')
const replacer = (name, val) => {
  console.log({name, val})
  if (name === 'coordinates' && Array.isArray(val)) {
    val = JSON.stringify(val)
  }
  return val
}
module.exports = {
  replacer, replacerWrapper,
  geojsonSerialiser: (geojson, space) => replacerWrapper(JSON.stringify(geojson, replacer, space))
}

// Usage: 
// import { geojsonSerialiser } from 'geojson-stringify'
// geojsonSerialiser(geojsonObject, 2)
// Output is the same as JSON.stringify(geojson, null, 2), but with `geometry.coordinates` arrays on a single line, e.g.
// {
//   "@context": {
//     "geojson": "https://purl.org/geojson/vocab#",
//     "Feature": "geojson:Feature",
//     "FeatureCollection": "geojson:FeatureCollection",
//     "GeometryCollection": "geojson:GeometryCollection",
//     "LineString": "geojson:LineString",
//     "MultiLineString": "geojson:MultiLineString",
//     "MultiPoint": "geojson:MultiPoint",
//     "MultiPolygon": "geojson:MultiPolygon",
//     "Point": "geojson:Point",
//     "Polygon": "geojson:Polygon",
//     "bbox": {
//       "@container": "@list",
//       "@id": "geojson:bbox"
//     },
//     "coordinates": {
//       "@container": "@list",
//       "@id": "geojson:coordinates"
//     },
//     "features": {
//       "@container": "@set",
//       "@id": "geojson:features"
//     },
//     "geometry": "geojson:geometry",
//     "id": "@id",
//     "properties": "geojson:properties",
//     "type": "@type",
//     "description": "http://purl.org/dc/terms/description",
//     "title": "http://purl.org/dc/terms/title"
//   },
//   "type": "Feature",
//   "id": "sample-multipolygon",
//   "geometry": {
//     "type": "MultiPolygon",
//     "coordinates": [[[[180,40],[180,50],[170,50],[170,40],[180,40]]],[[[-170,40],[-170,50],[-180,50],[-180,40],[-170,40]]]]
//   },
//   "properties": {
//     "title": "Sample MultiPolygon",
//     "description": "Antimerdian-straddling MultiPolygon from RFC7946"
//   }
// }
// Note the value of geometry.coordinates does not have line breaks! Sanity prevails.