问题描述：在使用Angular 14和NGRX时，选择器无法正确工作。

1. 确保在正确的位置导入 createSelector。

import { createSelector } from '@ngrx/store';

2. 确保使用 selectors 的组件中的订阅代码部分正确。您应该订阅选择器，并将其赋值给您的局部变量。例如：

import { Component } from '@angular/core';
import { Observable } from 'rxjs/Observable';
import { Store, createSelector } from '@ngrx/store';

import { AppState } from '../app.state';

import { getSelectedUser } from '../user.selectors';

import { User } from '../user';

@Component({
    selector: 'app-selected-user',
    templateUrl: './selected-user.component.html',
    styleUrls: ['./selected-user.component.css']
})
export class SelectedUserComponent {
    public selectedUser$: Observable;

    constructor(private store: Store) {
        this.selectedUser$ = this.store.select(getSelectedUser);
    }
}

3. 确认您的选择器返回了一个 Observable 对象。如果您的选择器只返回一个对象或数组，那么您应该使用 of 方法将其转换为 Observable。例如：

import { createFeatureSelector, createSelector } from '@ngrx/store';
import { User } from './user';

export interface UserState {
    users: User[];
    selectedUserId: number;
}

export const getUserState = createFeatureSelector('users');

export const getUsers = createSelector(
    getUserState,
    state => state.users
);

export const getSelectedUserId = createSelector(
    getUserState,
    state => state.selectedUserId
);

export const getSelectedUser = createSelector(
    getUsers,
    getSelectedUserId,
    (users, selectedUserId) => {
        if (users && selectedUserId) {
            return users.find(user => user.id === selectedUserId);
        } else {
            return null;
        }
    }
);

这些步骤应该有助于解决您在使用 Angular 14 和 NGRX 时遇到的选择器问题。