ComputerCarl

const { Machine, interpret, assign } = require('xstate');

const firstService = () => new Promise(resolve => {
    setTimeout(() => {
        console.log('in first service');
        resolve();
    }, 3000);
})

const secondService = () => {

ComputerCarl

import './App.css';
import React, { useEffect, useState } from 'react';

const loadScript = script => new Promise(resolve => {
    const scriptTag = window.document.createElement('script');
    scriptTag.src = script;
    scriptTag.setAttribute('defer', 'defer');
    scriptTag.setAttribute('crossorigin', 'crossorigin');
    window.document.body.appendChild(scriptTag);
    window.addEventListener('load', () => resolve());

ComputerCarl

const { deviation, sum } = require('d3-array');
// the samples are like clicks per day
const sample = [
    [45, 40, 39, 80, 37, 34, 36],
    [15, 7, 6, 25, 9, 12]
]
// z-score = ([current trend] - [average historic trends]) / [standard deviation of historic trends]
const samplingAvg = sample => (sum(sample) / sample.length);
const trend = (current, sample) => ((current - samplingAvg(sample)) / deviation(sample));

ComputerCarl

import React, { Component } from 'react';

class App extends Component {
  componentWillMount () {
  }
  componentDidMount () {
    const textFile = require('./text.md');
    fetch(textFile)
    .then(response => {
      return response.text();