创建简单的NODEJS项目-Toy模板网

这篇具有很好参考价值的文章主要介绍了创建简单的NODEJS项目。希望对大家有所帮助。如果存在错误或未考虑完全的地方，请大家不吝赐教，您也可以点击"举报违法"按钮提交疑问。

起因

想简单测试CryptoJS，但是又不想带一个大项目启动，只是想用命令行简单测试下面的test1.js而已

import CryptoJS from 'crypto-js';

const loginInfo = "这是一段我想加密的信息 2!@#$@!#$"
const passPhras = "^@#$%#$!#&#$%&"


var encrypted = CryptoJS.DES.encrypt(loginInfo, passPhras)
console.log("加密：", encrypted.toString())

var decrypted = CryptoJS.DES.decrypt(encrypted, passPhras)
console.log("解密：", decrypted.toString())

创建一最简化的项目

mkdir test1
cd test1
npm init

这样项目就创建好了，然后命令行运行：

npm install crypto-js

组件安装好了，但是运行出错

node test1.js

出现下面的错误
(node:4276) Warning: To load an ES module, set "type": "module" in the package.json or use the .mjs extension.
(Use `node --trace-warnings ...` to show where the warning was created)
/root/test/node1/test1.js:1
import CryptoJS from 'crypto-js';
^^^^^^

SyntaxError: Cannot use import statement outside a module
    at Object.compileFunction (node:vm:352:18)
    at wrapSafe (node:internal/modules/cjs/loader:1033:15)
    at Module._compile (node:internal/modules/cjs/loader:1069:27)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1159:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:77:12)
    at node:internal/main/run_main_module:17:47

参考：https://bobbyhadz.com/blog/javascript-syntaxerror-cannot-use-import-statement-outside-module，修改一下package.json，加上"type": "module"这行

{
  "name": "node1",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "type": "module",
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "crypto-js": "^4.1.1"
  }
}