docs: function getJSFiles(folder = srcFolder){
    let all = [];
    let f = fs.readdirSync(folder);
    for(file of f){
      all.push(path.join(folder,file))
      if(fs.lstatSync(path.join(folder,file)).isDirectory()){
        all = all.concat(getJSFiles(path.join(folder,file)));
      }
    }
    return all.filter(x => x.endsWith('.js'));
  }