Shawn Gustaw shawngustaw

name

you-might-not-need-an-effect

description

Consult this skill whenever writing, editing, or reviewing React code that involves (or might involve) useEffect. Trigger on any React component work where you're tempted to reach for useEffect — including syncing state to other state, transforming data for rendering, responding to events, resetting state on prop changes, chaining state updates, initializing the app, notifying parent components, data fetching, or any "I want X to happen when Y changes" instinct. Also trigger when reviewing existing code that already uses useEffect. Treat useEffect as effectively banned — almost every use is a code smell with a simpler, more correct alternative, and every "just in case" Effect is the seed of the next race condition or infinite loop. Based on the React docs "You Might Not Need an Effect" and Alvin Sng's "Why we banned React's useEffect".

You Might Not Need an Effect

Treat useEffect as effectively banned. Not literally forbidden — there are a hand

Keybase proof

I hereby claim:

I am shawngustaw on github.
I am notsrg (https://keybase.io/notsrg) on keybase.
I have a public key ASC6XoXQJosU8oglN2VHEq1sWowWF9dsWWbZoLo1G3kjTgo

To claim this, I am signing this object:

	import PropTypes from 'prop-types';

	type Omit<T, K> = Pick<T, Exclude<keyof T, K>>;

	type Defined<T> = T extends undefined ? never : T;

	/**
	* Get the type that represents the props with the defaultProps included.
	*
	* Alternatively, we could have done something like this:

	<!doctype html>

	<html lang="en">
	<head>
	<meta charset="utf-8">
	<title>Testing opener is restricted</title>
	<meta name="description" content="Testing">
	<meta name="author" content="Shawn Gustaw">
	</head>

	export PATH=$HOME/bin:/usr/local/bin:$PATH

	export TERM="xterm-256color"

	# path for python virtual envs
	export WORKON_HOME=$HOME/.virtualenvs

	export PATH="/usr/local/bin:$PATH"
	export PATH="/usr/local/sbin:$PATH"
	export PYTHONPATH=$PYTHONPATH:/Users/securitycompass/SDElements/sdelements/sigma

	let g:neocomplete#enable_at_startup = 1

	set nocompatible
	filetype off
	set rtp+=~/.vim/bundle/vundle/
	call vundle#rc()

	Plugin 'gmarik/vundle'
	Plugin 'scrooloose/nerdtree.git'
	Plugin 'davidhalter/jedi-vim.git'

	from locust import HttpLocust, TaskSet, task
	from random import choice


	BULIST = ['bu1', 'bu2', 'bu3', 'bu4', 'bu5']
	PROJLIST = ['proj1', 'proj2', 'proj3']
	APPLIST = ['app1', 'app2', 'app3', 'app4', 'app5']

	USERLIST = []
	for i in range(1, 501):

	import requests
	import argparse
	import urlparse


	parser = argparse.ArgumentParser()
	parser.add_argument("--url")
	parser.add_argument("--token")
	args = parser.parse_args()

	Disclaimer: I am not associated with Copperhead and this is not supported by them WHATSOEVER, nor is this guaranteed to work.
	This has worked for me though.

	1. Download gapps from http://opengapps.org/

	The Nexus 5 has uses ARM (not 64-bit) and cOS is currently running Android Marshmallow (6.0).

	2. Download the latest version of TWRP (as of now v3.0)

	https://dl.twrp.me/hammerhead/twrp-3.0.0-0-hammerhead.img.html