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

alias from @ember/object/computed is deprecated.

It created a second property that reflected another property's value.

Migration

Prefer direct access to the original tracked state, or use a simple getter and setter.

Before:

import { alias } from '@ember/object/computed';
import { tracked } from '@glimmer/tracking';

class Person {
  @tracked firstName = 'Tom';
  @alias('firstName') name;
}

After:

import { tracked } from '@glimmer/tracking';
class Person {
  @tracked firstName = 'Tom';
  get name() { return this.firstName; }
  set name(value) { this.firstName = value; }
}

If all call sites can use firstName directly, remove the alias entirely.