Question

我通过express-generator安装模板，我启动了它，没关系。之后，我将添加到项目包admin-bro和admin-bro-expressjs中。安装后，我尝试使用npm start命令，但出现错误。我不明白为什么它不运行，包React存在于node_modules中。您可以在下面看到的代码package.json。

{
  "name": "my_project",
  "version": "0.0.0",
  "private": true,
  "scripts": {
    "start": "node ./bin/www"
  },
  "dependencies": {
    "admin-bro": "^0.8.8",
    "admin-bro-expressjs": "^0.1.7",
    "admin-bro-mongoose": "^0.2.2",
    "cookie-parser": "~1.4.4",
    "debug": "~4.1.1",
    "express": "~4.17.1",
    "express-session": "^1.16.2",
    "hbs": "~4.0.4",
    "http-errors": "~1.7.2",
    "morgan": "~1.9.1"
  }
}

控制台中的错误：

PS D:\my_project> npm start

> my_project@0.0.0 start D:\my_project
> node ./bin/www

D:\my_project\node_modules\admin-bro\src\frontend\login-template.js:1
import React from 'react'
       ^^^^^

SyntaxError: Unexpected identifier
    at Module._compile (internal/modules/cjs/loader.js:721:23)
    at Module._compile (D:\my_project\node_modules\pirates\lib\index.js:99:24)
    at Module._extensions..js (internal/modules/cjs/loader.js:787:10)
    at Object.newLoader [as .js] (D:\my_project\node_modules\pirates\lib\index.js:104:7)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Module.require (internal/modules/cjs/loader.js:690:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at Object.<anonymous> (D:\my_project\node_modules\admin-bro\src\admin-bro.js:5:23)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! my_project@0.0.0 start: `node ./bin/www`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the my_project@0.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\vsevo\AppData\Roaming\npm-cache\_logs\2019-06-19T23_28_03_159Z-debug.log

Answer 1

如果要启动Express，则应这样导入

const react = require('React');

如果它在React上，请改为这样做

import React, { Component } from 'react';

修改

需要R，而不是r

顺便说一句，您忘记了NPM安装反应

Node.js没有看到模块，意外的标识符从“ react”导入React

1 个答案: