Parker parkerproject

Flow to TypeScript Migration

Helpful Migration Guides:

Migrating a Babel Project to TypeScript

Phase 1: Configure Project to use TypeScript

Delete Flow-related files

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:

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

Effective Engineer - Notes

By Edmond Lau
Highly Recommended 👍
http://www.theeffectiveengineer.com/

What's an Effective Engineer?

Prerequisites : the letsencrypt CLI tool

This method allows your to generate and renew your Lets Encrypt certificates with 1 command. This is easily automatable to renew each 60 days, as advised.

You need nginx to answer on port 80 on all the domains you want a certificate for. Then you need to serve the challenge used by letsencrypt on /.well-known/acme-challenge. Then we invoke the letsencrypt command, telling the tool to write the challenge files in the directory we used as a root in the nginx configuration.

I redirect all HTTP requests on HTTPS, so my nginx config looks like :

server {

	export default class Article extends Component {


	// notice that it's an async function
	static async getInitialProps () {

	// fetch data on the server and parse it to JSON
	const res = await
	fetch('http://localhost:3000/wp-json/wp/v2/articles/1316999');
	const json = await res.json();

	const fetch = require('node-fetch')
	const crypto = require('crypto')
	const path = require('path')
	const fs = require('fs');
	const _ = require('lodash');

	exports.sourceNodes = async ({ actions }) => {
	const { createNode } = actions

	const createProduct = (var1, var2) => {

	var Promise = require('bluebird');
	var sinon = require('sinon');
	var User = require('./db/models').User;

	describe('User model', function(){
	var userFindStub;
	var sandbox;

	before(function(){
	sandbox = sinon.sandbox.create();

	axios({
	url: 'http://localhost:5000/static/example.pdf',
	method: 'GET',
	responseType: 'blob', // important
	}).then((response) => {
	const url = window.URL.createObjectURL(new Blob([response.data]));
	const link = document.createElement('a');
	link.href = url;
	link.setAttribute('download', 'file.pdf');
	document.body.appendChild(link);

	import RNFS from 'react-native-fs';

	module.exports = {
	read: (source) =>
	{
	return RNFS.exists(source).then((fileExists) =>
	{
	if (fileExists)
	{
	return RNFS.readFile(source).then((data) => JSON.parse(data));