code: function computedReduxProperty(key, getProps) {
    return computed({
      get: () => getProps()[key],
      set: () => { assert(`Cannot set redux property "${key}". Try dispatching a redux action instead.`); }
    });
  }
docs: Creates a read-only computed property for accessing redux state.
  
  @method computedReduxProperty
  @return {Function} an Ember computed property
  @private