错误:找不到模块“pug”

Question

这是我的index.js文件：

const express = require('express')
const app = express()

app.set('views', __dirname + '/views');
app.set('view engine', 'pug')

app.get('/', function (req, res) {
  res.render('index', { title: 'Hey', message: 'Hello there!' })
})


app.listen(3333, function () {
  console.log('Example app listening on port 3333!')
})

index.pug文件：

html
  head
    title= title
  body
    h1= Hello

package.json文件：

{
  "name": "@npm-private/pug_with_node",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "express": "^4.15.3",
    "jade": "^1.11.0",
    "pug": "^2.0.0-rc.2"
  }
}

当我运行我的服务器文件时，它会显示一个错误。事实上，我安装了pug和jade两个npm模块：

错误:无法在需要时(内部/module.js:11:18)在Function.Module._resolveFilename (module.js:485:15)、Function.Module._load (module.js:437:25)、Module.require (module.js:513:17)上找到模块“pug”(内部/module.js:11:18)_node/express/lib/application.js:570:12)在(/home/software/node_modules/express/lib/response.js:971:7) at /home/ ServerResponse.render /ServerResponse.render/pug_with_node/index.js:8:7 at Layer.handle 请求 at next (/home/software/node_modules/express/lib/router/route.js:137:13)

Answer 1

尝试添加这一行

app.engine('pug', require('pug').__express)

在此之前

app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');

这为我解决了同样的问题！

Answer 2

当全球和本地之间的模块安装不匹配时，即使安装了所有模块，您也会遇到这个问题。我建议您通过在package.json中包含依赖项来安装项目的本地所有内容。

npm install --save express jade pug

Answer 3

最简单的解决方法是将pug安装为开发依赖项：npm i -D pug