learncodeacademy

##what are generators##

• They're pausable functions, pausable iterable functions, to be more precise
• They're defined with the *
• every time you yield a value, the function pauses until .next(modifiedYieldValue) is called

var myGen = function*() {
  var one = yield 1;
  var two = yield 2;
  var three = yield 3;
 console.log(one, two, three);

kamleshchandnani

Bundling Design Systems/Component Libraries

First of all you need to decide who will be your target consumers based on the following:

1. They have the same environment(webpack config, babel config) setup as you where you built your design system(this is mostly possible if you use monorepos/same configs where all the teams share the same environment).

2. They don't have the same environment which is the case when you work in bigger teams and you want to distribute your design system as any other npm package which is already built and can be used directly.

If your use case falls under case no. 1 then you can just compile the source babel src -d build and leave the bundling to the consumer projects tools(webpack/rollup)

bradfrost

Answering the Front-end developer JavaScript interview questions to the best of my ability.

• Explain event delegation

Sometimes you need to delegate events to things.

• Explain how this works in JavaScript

This references the object or "thing" defined elsewhere. It's like "hey, thing I defined elsewhere, I'm talkin' to you."

• Explain how prototypal inheritance works.

threepointone

(I'm enjoying doing these raw, barely edited writeups; I hope they're useful to you too)

Feature flags

This is my own writeup on feature flags; for a deep dive I'd recommend something like Martin Fowler's article (https://martinfowler.com/articles/feature-toggles.html).

So. Feature flags. The basic idea that you'll store configuration/values on a database/service somewhere, and by changing those values, you can change the user experience/features for a user on the fly.

Let's say that you're building a new feature, called 'new-button' which changes the color of buttons, which is currently red, to blue. Then you'd change code that looks like this -

threepointone

A series of posts on css-in-js

0. styles as objects

First, an exercise. Can we represent all of css with plain data? Let's try.

let redText = { color: 'red' };

wikimatze

I heard from GitHub Two-Factor Authentication](https://github.com/blog/1614-two-factor-authentication) nearly a couple of days ago when I was reading my RSS feed. I enabled it and couldn' push to any of my repositories anymore. Learn in this blog post how to fix it.

Two-Factor Authentication

"Is a process involving two stages to verify the identity of an entity trying to access services in a computer or in a network". Github solves this authentication with sending an SMS to a device which wants to push to their platform.

Enabling Two-Factor Authentication

threepointone

I made a little styling lib called glam

(some features are in development)

one

let's start off with the simplest use case. we'll make an 'index.html' page, and assume we've setup our js bundler to output bundle.js

pongstr

Javascript Shorthand Coding Techniques

My (@pongstr) opinion about shorthand coding techniques

Shorthand code is not really a replacement for normal coding but it is very handy and useful in some cases. There are tons of opinions and debates around this but, again it all comes down what is necessary for your codebase and using it responsibly.

spiralx

if (!Object.assign) {
  Object.defineProperty(Object, 'assign', {
    enumerable: false,
    configurable: true,
    writable: true,
    value: function(target) {
      'use strict';
      if (target === undefined || target === null) {
        throw new TypeError('Cannot convert first argument to object');
      }

carolineartz

Cub n Pup - puzzle game demo

How to play: Drag cub to star, Drag grid to rotate.

Also available at cubnpup.com

This is a proof-of-concept for a game. Basic art, no sound, no options, no polish. But the core game-play is there. It's more of a mobile game, focused on dragging — inspired by Threes. I'm looking to see if its any fun. Let me know!

I've always wanted to make a video game. This could be the one. My previous attempts never got past isolated demos because they were aiming for bigger ideas. They grew complex and unwieldy. So this game is designed to be simple. A game that I can actually make.