How to use

mergeWith

function

in

LoDashStatic

_.mergeWith(old, ...fresh, (s, f) => {
 if (_.isArray(s)) return _.uniq(s.concat(f));
})

 ];
} else {
 publishFoldersInfo = _.mergeWith(publishFoldersInfo, getPublishStaticFiles(pageInclude.css, 'css'), getPublishStaticFiles(pageInclude.js, 'js'), getPublishImageFiles(pageInclude.images), mergeArrayConcatCustomizer);

filesInfo = _.mergeWith(filesInfo, imagesInfo, mergeArrayConcatCustomizer);

async getPermissions() {
    const permissions = {};
    const mergeStrategy = function customizer(objValue, srcValue) {
      if (_.isArray(objValue)) {
       return _.uniq(objValue.concat(srcValue));
      }
    };

    const groups = await this.userManager.loadGroups();

    _.each(groups, (group) => {
      if (_.includes(this.groups, group.name)) {
        _.mergeWith(permissions, group.permissions, mergeStrategy)
      }
    });

    return permissions;
  }

parse(xmlPayload, callback) {
  this.xmlPayload = xmlPayload
  this.parser.parseString(this.xmlPayload, (err, results) => {
   if (err) {
    return callback(null, { message: this.xmlPayload.trim() })
   }

   const parsedResults = _.mergeWith({}, results, function(a, b) {
    var obj = {}
    Object.keys(b).forEach(function(key) {
     if (key === '$') {
      obj.attribs = b[key]
     } else if (_.isArray(b[key])) {
      obj[key] = _.map(b[key], '$')
     }
    })
    return obj
   })
   return callback(null, parsedResults)
  })
 }

_.mergeWith(opt, options || {}, function(objValue, srcValue, key) {
    if (key === 'bucket') {
      return srcValue;
    }
  })

apply(config) {
  _.mergeWith(this.config, config, (dest, src) => {
   if (typeof dest !== 'string') {
    return;
   }
   // If source object is array, convert to string, adding spaces between entries
   if (Array.isArray(src)) {
    return src.join(' ');
   }

   // Convert object to string
   if (typeof src === 'object') {
    return JSON.stringify(src);
   }
  });
 }