Deprecation Guide for Deprecate import or from @ember/object/computed

or from @ember/object/computed is deprecated.

Before:

import { or } from '@ember/object/computed';
class Session {
  token = null;
  cachedToken = 'abc';
  @or('token','cachedToken') activeToken;
}

After:

class Session {
  token = null;
  cachedToken = 'abc';
  get activeToken() { return this.token || this.cachedToken; }
}