App.engine(‘handlebar’，hbs({ defaultLayouts: true })；TypeError: hbs不是函数

Question

设置带有车把的视图引擎

    const express = require('express');
const mongoose = require('mongoose');
const path = require('path');
const hbs = require('express-handlebars');

const app = express();

配置猫鼬以连接到mongodb

mongoose.connect('mongodb://localhost:27017/1st-cms-db', { useNewUrlParser: true })
.then(response => {
    console.log('Database is connected successfuly')
}).catch(err => {
    console.log('Database connection failled')
})

安装视图引擎以使用

    app.engine('handlebars', hbs({ defaultLayouts: true }));
    app.set('view engine', 'handlebars');

我得到的错误是

    app.engine('handlebars', hbs({ defaultLayouts: true }));
                         ^

TypeError: hbs is not a function

Answer 1

确保安装此软件包：npm install express-handlebars

您可以参考Handles Bars hbs is not a function