class export problem

// the error that happens when running the server:
> node server.js

/Users/tristanpendergrass/dev/project/server/models/trade.model.js:2
  this.ign = data.ign;
                 ^
                 
                 
                 
// trade.model.js
module.exports = new function Trade(data) {
  this.ign = data.ign;
}

// the only line in the whole project referencing the trade model
const Trade = require('../models/trade.model.js');