mistercoffee66

const net = require('net');

const getOpenPort = async (port, maxPort) => {
  const isPortAvail = (currentPort) => new Promise((resolve, reject) => {
    const tester = net.createServer()
      .once('error', (err) => (err.code === 'EADDRINUSE' ? resolve(false) : reject(err)))
      .once('listening', () => tester.once('close', () => resolve(true)).close())
      .listen(currentPort);
  });
  

mistercoffee66

import React, { createContext, useState } from 'react';
import PropTypes from 'prop-types';

const mq = 'screen and (max-width: 671px)';

const ResponsiveContext = createContext();

const ResponsiveContextProvider = ({ children }) => {
  const [isMobile, setIsMobile] = useState(window.matchMedia(mq).matches);
  matchMedia(mq).addEventListener('change', e => setIsMobile(e.matches));

mistercoffee66

/* eslint no-console: 0 */
/* eslint no-unused-vars: 0 */
const https = require('https');

const goodUrl = 'https://jsonplaceholder.typicode.com/users/1';
const badUrl = 'https://jsonplaceholder.typicode.com/foo';
const badDomain = 'https://no.such.url';

const externalCall = (url, t = 0) => new Promise((resolve, reject) => {
  setTimeout(() => {

mistercoffee66

const isTruthy = (expression) => {
  if (typeOf expression === 'number') return true // 0 returns true
  if (Array.isArray(expression) && expression.length < 1) return false // empty array returns false
  if typeOf expression === 'Object' && Object.keys(expression).length < 1) return false // empty object returns false
  return !!expression
}

mistercoffee66

<script>
  const els = document.querySelectorAll('li')

  const iterables = new Map([
    ['myObject', {
      appetizer: 'Soup',
      entree: 'Mahi Mahi',
      dessert: 'Pie!'
    }],
    ['myArray', [

mistercoffee66

export const trimAnything = (str, trimChar, opts = { start: false, end: true }) => {
  if (str.length > 1 || opts.allowEmpty) {
    let pattern;
    if (opts.start && !opts.end) {
      pattern = `^\\${trimChar}+`;
    } else if (!opts.start && opts.end) {
      pattern = `\\${trimChar}+$`;
    } else {
      pattern = `^\\${trimChar}+|\\${trimChar}+$`;
    }

mistercoffee66

//*********server.js*********

const express = require('express')
const path = require('path')

const app = express()
const port = process.env.PORT || 3000

mistercoffee66

{
  "parserOptions": {
    "ecmaVersion": 2017,
    "sourceType": "module",
    "ecmaFeatures": {
      "experimentalObjectRestSpread": true
    }
  },
  "rules": {
    "func-names": [

mistercoffee66

// Element.matches()
if (!Element.prototype.matches)
    Element.prototype.matches =
        Element.prototype.msMatchesSelector ||
        Element.prototype.webkitMatchesSelector


// NodeList.forEach()
if (window.NodeList && !NodeList.prototype.forEach) {
    NodeList.prototype.forEach = function (callback, thisArg) {

mistercoffee66

const isMobile = () =>{
	return ( navigator.userAgent.match(/Android/i) || 
		navigator.userAgent.match(/BlackBerry/i) || 
		navigator.userAgent.match(/iPhone/i) || 
		navigator.userAgent.match(/iPad/i) ||
		navigator.userAgent.match(/iPod/i) ||
		navigator.userAgent.match(/iPhone|iPad|iPod/i) ||
		navigator.userAgent.match(/IEMobile/i) )
}