stevermeister

function counter(state = 0, action) {
  switch (action.type) {
  case 'INCREMENT':
    return state + 1
  case 'DECREMENT':
    return state - 1
  default:
    return state
  }
}

stevermeister

function createStore(reducer, initialState) {
    var currentReducer = reducer;
    var currentState = initialState;
    var listener = () => {};
 
    return {
        getState() {
            return currentState;
        },
        dispatch(action) {

rauschma

// Lazy (=on-demand) zip()
for (const [i, x] of zip(naturalNumbers(), naturalNumbers())) {
    console.log(i, x);
    if (i >= 2) break;
}
// Output:
// 0 0
// 1 1
// 2 2

samthor

// UPDATE: In 2023, you should probably stop using this! The narrow version of Safari that
// does not support `nomodule` is probably not being used anywhere. The code below is left
// for posterity.

/**
 * Safari 10.1 supports modules, but does not support the `nomodule` attribute - it will
 * load <script nomodule> anyway. This snippet solve this problem, but only for script
 * tags that load external code, e.g.: <script nomodule src="nomodule.js"></script>
 *
 * Again: this will **not** prevent inline script, e.g.:

fokusferit

Shallow

Real unit test (isolation, no children render)

Simple shallow

Calls:

• constructor
• render

koshuang

const composeMixins = (...fns) => (
  obj = {},
  piped = x => fns.reduce((o, fn) => fn(o), x)
) => piped(obj);

const user = {
  name: 'kos',
  email: 'test@test.com',
};

myshov

console.log(1);
(_ => console.log(2))();
eval('console.log(3);');
console.log.call(null, 4);
console.log.apply(null, [5]);
new Function('console.log(6)')();
Reflect.apply(console.log, null, [7])
Reflect.construct(function(){console.log(8)}, []);
Function.prototype.apply.call(console.log, null, [9]);
Function.prototype.call.call(console.log, null, 10);

staltz

# Name it whatever you want. I like `y` because in my keyboard layout it's close to `;`
function y() {
    previous=$?
    if [ $previous -eq 0 ]; then
        osascript -e "display notification \"Done\" with title \"Terminal Task\"" && say "it is done";
    else
        osascript -e "display notification \"Failed\" with title \"Terminal Task\"" && say "it went to the trees";
    fi
}

ryanflorence

import React, { Component } from 'react'
import logo from './logo.svg'
import './App.css'

import { Route, Link, Redirect } from './Zero'

const paths = [ 'one', 'two', 'three' ]

class App extends Component {
  render() {

developit

const MODULE_DIR = /(.*([\/\\]node_modules|\.\.)[\/\\](@[^\/\\]+[\/\\])?[^\/\\]+)([\/\\].*)?$/g;

{
	loader: 'babel-loader',
	test: /\.jsx?$/,
	include(filepath) {
		if (filepath.split(/[/\\]/).indexOf('node_modules')===-1) return true;
		let pkg, manifest = path.resolve(filepath.replace(MODULE_DIR, '$1'), 'package.json');
		try { pkg = JSON.parse(fs.readFileSync(manifest)); } catch (e) {}
		return !!(pkg.module || pkg['jsnext:main']);