kamal-hossain

const express = require('express')
const imageToBase64 = require('image-to-base64')
const app = express()
const fs = require('fs')
const Axios = require('axios')
const sharp = require('sharp')

app.use(express.json())

app.use((r, res, next) => {

kamal-hossain

require("http").createServer(function(request, response){
    response.writeHeader(200, {"Content-Type": "text/plain"});  
    response.write("Hello World!");  
    response.end();
  }).listen(8080);

kamal-hossain

SSH Cheat Sheet

Login via SSH with password (LOCAL SERVER)

$ ssh brad@192.168.1.29

Login via SSH with key (remote server)

ssh -i "react-counter-app.pem" ubuntu@test.compute.amazonaws.com

Logout from SSH

$ logout

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Advance google search techniques

• Search by asterics for all keywords

the capital of *

• Search within the website

kamalhossain.me javascript

kamal-hossain

TypeScript debugging in vscode

• Add brekpoint in TypeScript file to inspect via vscode debugger and Debugger for Chrome
  • Install Debugger for Chrome extension in vscode
  • F9 to add breakpoint
  • Set "sourceMap": true, in tsconfig.json
  • Go to Run > Start Debugging
  • Select environment Chrome (it won't appear with chrome extention)
  • In launch.json file set url to specefic port where developemnt server is running e.g. (http://localhost:3000)
• Make sure webRoot is correct

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import React from 'react'
import './App.css'

function App() {
  const [isOpnnedAlready, setIsOpnnedAlready] = React.useState(false)

  const channel = React.useMemo(() => new BroadcastChannel('couldBeAnything'), [])

  React.useEffect(() => {
    channel.postMessage({

kamal-hossain

MongoDB Cheat Sheet

Open MongoDB in cmd (For windows)

mongo

If mongo is not recognized as an internal or external command, operable program or batch file, then do the followings from this blog

Show All Databases

kamal-hossain

Simple server for download all files from the parent directory (Windows 10 tested)

Follow the instructions:

• Download all files from the gist to the target folder, from where you want to make all files make avaiable for download
• Install the 'express' & 'ejs'
• start the server.js with node
• visit link: http://localhost:3000/

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Simple web server for ndoejs, using Express.