[1203] Webpack config problem with moltin js sdk

I got kind of a same error.. I try to implement moltin in my demo project and even with this it keeps telling me that dependencie fs isnt install ... any help ? There is no other way but trought npm to install the v2 sdk

build: {
    extend (config, { isDev, isClient }) {
      node: {
        fs: 'empty'
      }
    },
    vendor: ['axios']
  }