How to use the neo-async.auto function in neo-async

function(callback) {
                  async.auto({
                    "activate": function(callback) {
                      i1.activate(data[0].inputs[0], function(error, signal) {
                        expect(error).to.be.null
                        expect(signal).to.be.a("number")
                        expect(signal).to.be.equal(data[0].inputs[0])
                        callback(error, signal)
                      })
                    },
                    "forward": ["activate", function(results, callback) {
                      i1.forward(results.activate, callback)
                    }]
                  }, callback)
                },
                function(callback) {

let weights = function(callback) {
  let weights = function(neuron, callback) {
    neuron.weights(function(error, weights) {
      callback(error, "I: " + weights.incoming + "; O: " + weights.outgoing)
    })
  }
  
  async.auto({
    "inputs": function(callback) {
      async.map(i, weights, callback)
    },
    "neuron": function(callback) {
      weights(n, callback)
    }
  }, callback)
}
let outputs = function(callback) {