Node.js issue

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npm WARN npm does not support Node.js v14.16.0 (windows)

刪除目錄

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C:\Users\yourname\AppData\Roaming
目錄 npm and npm-cache

安裝npm

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npm install -g npm@latest

Cannot use import statement outside a module (node.js)

參考 Node.js v16.0.0 document type

package.json 加入 “type”: “module”,

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{
  "name": "node_test",
  "version": "1.0.0",
  "description": "",
	"main": "index.js",
	"type": "module",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
	},
  "author": "",
  "license": "ISC",
  "dependencies": {
    "hexo": "^5.4.0",
    "hexo-theme-next": "^8.3.0",
    "lodash": "^4.17.21",
    "mathjs": "^9.3.2"
  }
}

require is not defined (node.js)

package.json 移除 “type”: “module”,

process 參數含 & 要加 “ 才不會有問題

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// index.js
console.log("---------")
console.log(process.argv[2])
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$ node index.js &01
[35] 3164
bash: 01: command not found

$ node index.js &
[36] 15224

$ node index.js "&01"
---------
&01
[35]+  Stopped                 winpty node.exe index.js

process 參數含 ! 使用 “ 會有問題 要改為 ‘

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node challeng.js "lv15?token={ILOVELIdemy!!!}"
	bash: !}: event not found

node challeng.js 'lv15?token={ILOVELIdemy!!!}'
	還真的是我猜的那樣...不過還是要謝謝你幫我們完成這麼多任務！
	......

npm install 一直處於 sill install loadAllDepsIntoIdealTree

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# 不知何時設定 https-proxy, 刪除即 ok
npm config get https-proxy
  http://103.253.27.108:80/
npm config get proxy
  null
npm config delete https-proxy
npm config list
  ; "builtin" config from C:\Users\win10\AppData\Roaming\npm\node_modules\npm\npmrc
  prefix = "C:\\Users\\win10\\AppData\\Roaming\\npm"
  ; "cli" config from command line options
  omit = []
  user-agent = "npm/7.6.3 node/v14.17.0 win32 x64"
  ; node bin location = D:\app\nodejs\node.exe
  ; cwd = D:\work\git\test-npm
  ; HOME = C:\Users\win10
  ; Run `npm config ls -l` to show all defaults.

node.js server 中文亂碼

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// 'Content-Type': 'text/html;charset=utf-8' 修正中文亂碼
// demo_module.js
var http = require('http');
var dt = require('./myfirstmodule');
http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/html;charset=utf-8'});
  res.write("The date and time are currently: " + dt.myDateTime());
  res.end();
}).listen(8080);

// myfirstmodule.js
exports.myDateTime = function () {
  return Date();
};

found vulnerabilities-漏洞

  • 未找到一致解決方法

    9 vulnerabilities (4 low, 5 moderate)
    9 high severity vulnerabilities

body-parser 被標記為棄用(body-parser as deprecated)

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// 原來
const express = require("express");
const bodyParser = require("body-parser");
// app
const app = express();

app.use(bodyParser.json());


// 更新
const express = require("express");
// app
const app = express();

app.use(express.json());