ember-copy/addon/copyable.js

Ember addon to replace deprecated copy function and Copyable mixin

import Mixin from '@ember/object/mixin';

/**
  Implements some standard methods for copying an object. Add this mixin to
  any object you create that can create a copy of itself. This mixin is
  added automatically to the built-in array.

  You should generally implement the `copy()` method to return a copy of the
  receiver.

  @class Copyable
*/
// eslint-disable-next-line ember/no-new-mixins
export default Mixin.create({
  /**
    __Required.__ You must implement this method to apply this mixin.

    Override to return a copy of the receiver. Default implementation raises
    an exception.

    @method copy
    @param {Boolean} deep if `true`, a deep copy of the object should be made
    @return {Object} copy of receiver
  */
  copy: null
});