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import { Test, TestingModule } from '@nestjs/testing'
import { INestApplication, LoggerService } from '@nestjs/common'
import * as request from 'supertest'
import { AppModule } from './../src/app.module'

class TestLogger implements LoggerService {
  log(message: string) {}
  error(message: string, trace: string) {}
  warn(message: string) {}
  debug(message: string) {}

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Elapsed and execution time display for commands in ZSH

Append this to your ~/.zshrc file.

function preexec() {
 timer=$(($(date +%s%0N)/1000000))

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const AWS = require('aws-sdk')
const Crypto = require('crypto')

AWS.config.region = 'us-east-1'

var kms = new AWS.KMS()

keyArn = 'Put AWS KMS Key ARN Here'

// Set the KeyPairSpec to the type of key you want to generate.

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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

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Migrations & Seeding

What are migrations??

Migrations are a way to make database changes or updates, like creating or dropping tables, as well as updating a table with new columns with constraints via generated scripts. We can build these scripts via the command line using knex command line tool.

To learn more about migrations, check out this article on the different types of database migrations!

Creating/Dropping Tables

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After install zsh 

- brew update
- brew install nvm
- mkdir ~/.nvm

after in your ~/.zshrc or in .bash_profile if your use bash shell: 

    export NVM_DIR=~/.nvm
    source $(brew --prefix nvm)/nvm.sh

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const request = require('request-promise-native')
const fs = require('fs')
const util = require('util')

const log_file = fs.createWriteStream(__dirname + '/kubernetes-client-functions.md', { flags: 'w' })

log = function (d) {
  //
  log_file.write(util.format(d) + '\n')
}

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Handling Errors

Express.js makes it a breeze to handle errors in your routes.

Express lets you centralizes your error-handling through middleware.

Let's look at patterns for how to get the most out of your error-handling.

First, our error-handling middleware looks like this:

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Build docker image

$ cd /path/to/Dockerfile
$ sudo docker build .

View running processes

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Knex Setup Guide

Create your project directory

Create and initialize your a directory for your Express application.

$ mkdir node-knex-demo
$ cd node-knex-demo
$ npm init