Generate all points (gps resolution) into hand-drawn region inside browser, using geojson.io as data source

geojsonio-wp-generator.js

// featureCollection and all features on map
let fc;
// autogenerated features (points within hand-drawn region)
let uniqueWps;
// gps coordinates of autogenerated features 
let wps;
// script that does the magic
let gscript = "https://gist.githubusercontent.com/mrummuka/b70b9a9fb0825b4bace91a4b6d6b1257/raw/602987bba124e03a7641e96d56800375abd96409/regionWpGenerator";

fc = window.api.data.get('map');
fetch('https://npmcdn.com/@turf/turf@5.1.6/turf.js')
.then(t => t.text())
.then(eval)
.then( t => fetch(gscript))
.then( t => t.text())
.then(eval)
.then( t => {
    uniqueWps = generateUniqueWps( fc );
    wps = [];
    uniqueWps.features.forEach( f => { wps.push( f.properties.gps ) })
    console.log("Generated " + wps.length + " waypoints" )
    }
)
// next one does not scale well but can be used for visualizing generated points..
.then( t => window.api.data.mergeFeatures( uniqueWps.features ) )