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React News Saturday, March 31 React internals, Github extension, Style guide & more…

React News TLDR / Table of Contents

  • hexacta/didact
    • GitHub is where people build software. More than 27 million people use GitHub to discover, fork, and contribute to over 80 million projects.
    • React internals, GitHub extension, Visual Studio, jsx Didact.createElement, simpler implementation
  • Google publishes a JavaScript style guide. Here are some key lessons.
    • For anyone who isn’t already familiar with it, Google puts out a style guide for writing JavaScript that lays out (what Google believes to be) the best stylistic practices for writing clean…
    • style guide, function sayHi, Google, horizontal alignment, JS Style Guide
  • Lessons learned from deploying my first full-stack web application
    • In this post, I’ll be sharing the lessons I learned from a beginner’s perspective, along with some useful tutorials I followed, key roadblocks that I had to overcome, and mistakes that I made along…
    • server, web application, web server, virtual machine, full-stack web application
  • This repository goes together with a series of posts that explains how to build React from scratch step by step.
  • Didact’s goal is to make React internals easier to understand by providing a simpler implementation of the same API and step-by-step instructions on how to build it.
  • Once you understand how React works on the inside, using it will be easier.
  • Install it with npm or yarn: – – And then use it like you use React:

Tags: React internals, GitHub extension, Visual Studio, jsx Didact.createElement, simpler implementation

  • // Don’t do this kind of thing yet://—— lib.js —— – export function square(x) { – return x * x; – } – export function diag(x, y) { – return sqrt(square(x) + square(y)); – } – – //—— main.js —— – import { square, diag } from ‘lib’;Horizontal alignment is…
  • // bad – var example = 42;// good – let example = 42;Arrow functions are preferredArrow functions provide a concise syntax and fix a number of difficulties with this.
  • map((x) = { – const y = x + 1; – return x * y; – });Use template strings instead of concatenationUse template strings (delimited with `) over complex string concatenation, particularly if multiple string literals are involved.
  • // bad – const number = 5;// good – const NUMBER = 5;One variable per declarationEvery local variable declaration declares only one variable: declarations such as let a = 1, b = 2; are notused.
  • // bad – let a = 1, b = 2, c = 3;// good – let a = 1; – let b = 2; – let c = 3;Use single quotes, not doublequotesOrdinary string literals are delimited with single quotes (‘), rather than double quotes().

Tags: style guide, function sayHi, Google, horizontal alignment, JS Style Guide

  • This includes: – setting up the machine to be able to access the internet and run your codeexposing the correct portslistening for HTTP requests (Internet requests)pointing a custom domain name to the server your application is running fromYoull know its working when you can access your application using your custom…
  • Its the best tutorial I have come across in this space and covers: – Starting an AWS virtual machineGetting up correct security groups for portsPulling code from GitHub onto the virtual machineRunning your serverUsing Nginx, a HTTP server, to forward requests from port 80Using PM2 to persist the process running…
  • To deploy the Frontend code, you have to store all the files on your virtual machine in a location your web server knows about.
  • A web server listens to certain ports, port 80 or more commonly port 443 (secure), and either serves static files (your Frontend code) or passes the request to a different port.
  • The error was due to two other issues: – My database was included as an sqlite file in the Backend andMy process manager, PM2, was watching for file changesSo writing to the database file on a POST request caused PM2 to restart the server.

Tags: server, web application, web server, virtual machine, full-stack web application

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