stripetoken backend nodejs

stripe

 await stripe.tokens.create({
        card: {
          "number": '4242424242424242',
          "exp_month": 12,
          "exp_year": 2018,
          "cvc": '123'
        }
      }, function(err, token) {
        stripe.customers.create({
          email: '[email protected]'
        }).then(function(customer){
          return stripe.customers.createSource(customer.id, {
            source: token.id
          });
        }).then(function(source) {
          return stripe.charges.create({
            amount: amount,
            currency: 'usd',
            customer: source.customer,
            metadata: {'order_id': '6735'}
          });
        }).then(function(charge) {
          data = charge
          console.log(charge)
          // New charge created on a new customer
        }).catch(function(err) {
          console.log(err)
          // Deal with an error
        })