Combine skinnedmeshes in threejs

gistfile1.txt

import * as SkeletonUtils from 'threeModules/utils/SkeletonUtils.js';
import * as BufferGeometryUtils from 'threeModules/utils/BufferGeometryUtils.js';

function CrushAnimatedObject(root){
   
    //Make a clone of the root.. to work with..
    let ud = root.userData;
    root.userData={}
    let nroot = SkeletonUtils.clone(root);
    root.userData = nroot.userData = ud;

    //Find all the skinned meshes
    let meshes = []
    nroot.traverse(e=>e&&e.isMesh&&meshes.push(e));

    //Find all the materials
    let matmap = new Map()
    meshes.forEach(m=>matmap.set(m.material,m.material))
    let mats = Array.from(matmap.values())
    console.log(mats);

    let texmap = new Map()
    let mapTypes = new Map();
    mats.forEach(m=>{
        for(let k in m){
            if(!(k.endsWith('Map')||(k=='map')))continue;
            if(m[k]){
                texmap.set(m[k],m[k]);
                mapTypes.set(k,k);
            }
        }
    })
    mapTypes = Array.from(mapTypes.values())
    let textures=Array.from(texmap.values())
    
    //Make sure all the meshes have the same morphTargetsRelative setting.. or merging will fail..
    meshes.forEach(m=>{
//        m.geometry.morphTargetAttributes={}
        m.geometry.morphTargetsRelative = false;
    })

    //Merge all the geometries into a single geometry....
    let geoms = meshes.map(e=>e.geometry)
    let mergedGeometry = BufferGeometryUtils.mergeBufferGeometries( geoms,true );
    let smesh = new THREE.SkinnedMesh(mergedGeometry,meshes.map(e=>e.material));

    //copy the skeleton to the new SkinnedMesh...
    smesh.skeleton = meshes[0].skeleton;
    meshes.forEach(m=>m.parent.remove(m)) //Remove the original meshes
    
    nroot.add(smesh); //Add the newly generated merged mesh...
    nroot.userData = ud;  //copy the userdata from the original root
    return nroot;
}