Jared Williams jaredwilli

Below is the list of modern JS frameworks and almost frameworks – Angular, Ember and React.

All files were downloaded from https://cdnjs.com and named accordingly. Output from ls command is stripped out (irrelevant stuff)

As-is (minified)

$ ls -lhS
566K Jan 4 22:03 angular2.min.js

Sharing behaviour between React components

React 0.13 introduced using plain Javascript classes to create components, 0.14 introduced "stateless functional components" as another method of defining them. Neither of these have an in-built method for behaviour sharing such as we had with the mixins option passed to createClass. So now we get to review mixins as a pattern for behaviour sharing and, if necessary, come up with something better. If they're not all bad, we'll need to figure out how to, or even if we can, add them to the two new component definition options.

The problem

Dan Abromov's medium article from Mar 2015 makes the case for avoiding mixins.

For me (paraphrasing in the extreme), the key problems exposed are:

mixins can unintentionally hide / distribute the source of behaviour

	// https://github.com/alfonsomunozpomer/react-fetch-mock

	import React from 'react'
	import fetchMock from 'fetch-mock'
	import Enzyme from 'enzyme'
	import {shallow, mount, render} from 'enzyme'
	import Adapter from 'enzyme-adapter-react-16'

	Enzyme.configure({ adapter: new Adapter() })

	<script type="text/javascript">
	function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for (var i = 0; i < ca.length; i++) {
	var c = ca[i];
	while (c.charAt(0) == ' ') c = c.substring(1, c.length);
	if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
	}
	return null;

	import React from 'react';

	/*************/
	/* HELPERS */
	/*************/
	/**
	* Returns the key of a Firebase snapshot across SDK versions.
	*
	* @param {DataSnapshot} snapshot A Firebase snapshot.
	* @return {string\|null} key The Firebase snapshot's key.

	import axios from 'axios'

	let mockingEnabled = false

	const mocks = {}

	export function addMock(url, data) {
	mocks[url] = data
	}

	// 1: how could you rewrite the following to make it shorter?
	if (foo) {
	bar.doSomething(el);
	} else {
	bar.doSomethingElse(el);
	}

	<!DOCTYPE html>
	<html>
	<head>
	<title>Async Await</title>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
	<style type="text/css">
	@import url(https://fonts.googleapis.com/css?family=Yanone+Kaffeesatz);
	@import url(https://fonts.googleapis.com/css?family=Droid+Serif:400,700,400italic);
	@import url(https://fonts.googleapis.com/css?family=Ubuntu+Mono:400,700,400italic);

	function asyncToReact(fn) {
	class PromiseComponent extends React.Component {
	state = { waiting: true, result: null };
	componentDidMount() {
	fn(...this.props.args).then(result => this.setState({ waiting: false, result }));
	}
	componentDidUpdate() {
	fn(...this.props.args).then(result => this.setState({ waiting: false, result }));
	}
	shouldComponentUpdate(newProps) {

	#!/usr/bin/env node

	console.log('yay gist')