``` module.exports = function (Kotlin) { 'use st...

# javascript

[victor]

module.exports = function (Kotlin) {
  'use strict';
  var _ = Kotlin.defineRootPackage(null, /** @lends _ */ {
    Customer: Kotlin.createClass(null, function Customer(id, name, email) {
      this.id = id;
      this.name = name;
      this.email = email;
      this.isPreferred = false;
    }, /** @lends _.Customer.prototype */ {
      makePreferred: function () {
        this.isPreferred = true;
      }
    })
  });
  Kotlin.defineModule('customerBL', _);
  return _;
}(require('kotlin'));