Load json model in point/normal/uv format and export as .GLB

gistfile1.txt

 
import * as THREE from 'https:/threejs.org/build/three.module.js'

import {GLTFExporter} from 'https:/threejs.org/examples/jsm/exporters/GLTFExporter.js'

fetch('./map.json').then(data=>data.json().then((js)=>{
  console.log(js)
  let g = new THREE.PlaneGeometry(1,1)
  g.attributes.normal.array=new Float32Array(js.normal.length)
  g.attributes.normal.array.set(js.normal)
  g.attributes.normal.count = g.attributes.normal.array.length/3;
  g.attributes.position.array=new Float32Array(js.position.length)
  g.attributes.position.array.set(js.position)
  g.attributes.position.count = g.attributes.position.array.length/3;
  g.attributes.uv.array=new Float32Array(js.uv.length)
  g.attributes.uv.array.set(js.uv)
  g.attributes.uv.count = g.attributes.uv.array.length/2;
  g.setIndex(null)
  g.computeBoundingBox();
 //let m = new THREE.Points(g,new THREE.PointsMaterial({color:'red'}));
  let m = new THREE.Mesh(g,new THREE.MeshStandardMaterial({color:'grey',side:THREE.DoubleSide,roughness:.8,metalness:0}));
  m.scale.multiplyScalar(10)
  //m.layers.enable(1)
  scene.add(m)

  let exporter = new GLTFExporter()
exporter.parse( m, function ( gltf ) {
	console.log( gltf );

    const link = document.createElement( 'a' );
    link.style.display = 'none';
    document.body.appendChild( link );


    const blob = new Blob( [ gltf ], { type: 'text/plain' } );	
    const objectURL = URL.createObjectURL( blob );

    link.href = objectURL;
    link.href = URL.createObjectURL( blob );
    link.download =  'data.glb';
    link.click();
}, {binary:true} );
}))