Which one is better

loader.js

function interceptLoadFunctions(name, loader) {
  return Object.assign({}, loader, {
    load(id) {
      return loader.load(id).catch(itemErrorHandler(name, id))
    },
    loadMany(ids, ...args) {
      return loader.loadMany(ids).catch(multipleItemsErrorHandler(name, ids))
    }
  })
}

class Loader extends DataLoader {
  constructor(...args) {
    super(args)
  }

  load(id) {
    return super.load(id).catch(itemErrorHandler(name, id))
  }

  loadMany(ids) {
    return super.loadMany(ids).catch(multipleItemsErrorHandler(name, ids))
  }
}

class Loader2 {
  constructor(...args) {
    this.loader = new Loader(...args)
  }

  load(id) {
    return this.loader.load(id).catch(itemErrorHandler(name, id))
  }

  loadMany(ids) {
    return this.loader.loadMany(ids).catch(multipleItemsErrorHandler(name, ids))
  }
}