Md. Toufiqul Islam toufiq-austcse

ForRoot

This is useful when the registerAs is required across, so it is best to use it in the AppModule

import databaseConfig from './config/database.config';
@Module({
  imports: [
    ConfigModule.forRoot({
      load: [databaseConfig],
 }),

Installation

When it comes to linting TypeScript code, there are two major linting options to choose from: TSLint and ESLint. TSLint is a linter that can only be used for TypeScript, while ESLint supports both JavaScript and TypeScript. For that reason, I would recommend using ESLint for linting TypeScript projects. And another reason of using ESLint is, TSLint is deprecated in favour of ESLint

Install ESLint by running command below:

npm install --save-dev eslint @typescript-eslint/parser @typescript-eslint/eslint-plugin

Ignoring Files

First we need to ingnore node_modules from linting. Since we don't need to lint those files in the directory. Create .eslintignore file in root directory. Then add files/directory that we need to ignore just like .gitignore file.

Kafka Topics

List existing topics

bin/kafka-topics.sh --zookeeper localhost:2181 --list

Describe a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --describe --topic mytopic

Purge a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic mytopic --config retention.ms=1000

... wait a minute ...

	<!DOCTYPE html>
	<html>
	<head>
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<meta charset="UTF-8">
	<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">

	<script src="https://webrtc.github.io/adapter/adapter-latest.js"></script>

	<style>

	#!/bin/bash

	if [ ! $1 ]; then
	echo " Example of use: $0 database_name dir_to_store"
	exit 1
	fi
	db=$1
	out_dir=$2
	if [ ! $out_dir ]; then
	out_dir="./"

	git_current_branch () {
	local ref
	ref=$(command git symbolic-ref --quiet HEAD 2> /dev/null)
	local ret=$?
	if [[ $ret != 0 ]]
	then
	[[ $ret == 128 ]] && return
	ref=$(command git rev-parse --short HEAD 2> /dev/null) \|\| return
	fi
	echo ${ref#refs/heads/}

	const crypto = require('crypto');
	const algorithm = 'aes-256-ctr';
	let key = 'MySuperSecretKey';
	key = crypto.createHash('sha256').update(String(key)).digest('base64').substr(0, 32);

	const encrypt = (buffer) => {
	// Create an initialization vector
	const iv = crypto.randomBytes(16);
	// Create a new cipher using the algorithm, key, and iv
	const cipher = crypto.createCipheriv(algorithm, key, iv);

	############################################################################
	# #
	# ------- Useful Docker Aliases -------- #
	# #
	# # Installation : #
	# copy/paste these lines into your .bashrc or .zshrc file or just #
	# type the following in your current shell to try it out: #
	# wget -O - https://gist.github.com/jgrodziski/9ed4a17709baad10dbcd4530b60dfcbb/raw/d84ef1741c59e7ab07fb055a70df1830584c6c18/docker-aliases.sh \| bash
	# #
	# # Usage: #

	ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
	# Don't add passphrase
	openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
	cat jwtRS256.key
	cat jwtRS256.key.pub