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const memoize = (func) => {
  const results = {};
  return (...args) => {
    const argsKey = JSON.stringify(args);
    if (!results[argsKey]) {
      results[argsKey] = func(...args);
    }
    return results[argsKey];
  };
};

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// https://jrsinclair.com/articles/2019/functional-js-traversing-trees-with-recursive-reduce/

const menu1 = [
    {
        type: 'title',
        text: 'Works of George Macdonald',
    },
    {
        type: 'link',
        href: '/books',

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// https://zellwk.com/blog/async-await-in-loops/

const fruitBasket = {
  apple: 27,
  grape: 0,
  pear: 14,
};

const sleep = (ms) => {
  return new Promise((resolve) => setTimeout(resolve, ms));

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const assert = (val: boolean) => {
  if (!val) {
    throw new Error('false');
  }
  return true;
};

const mergeArray = <T>(key: keyof T, ...arrays: T[][]): T[] => {
  return Object.values(
    arrays.flat().reduce((acc, curr) => {

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We couldn’t find that file to show.

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const total = (arr) => arr.reduce((acc, v) => acc + v);
console.log(total([1, 2, 3])); // 6
/**====================================================================== */

const stringConcat = (arr) => arr.reduce((acc, v) => `${acc}${v}`);
console.log(stringConcat([1, 2, 3])); // "123"
/**====================================================================== */

const totalVotes = (arr) => {
  return arr.reduce((acc, curr) => (curr.voted ? acc + 1 : acc), 0);

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function pubSub() {
  const subscribers = {};

  function publish(eventName, data) {
    if (!Array.isArray(subscribers[eventName])) {
      return;
    }
    subscribers[eventName].forEach((callback) => {
      callback(data);
    });

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const ReactDOMServer = require('react-dom/server');
     
const render = (reactComponent) => { 
    return new Promise((resolve, reject) => { 
        const body = [];
        const bodyStream = ReactDOMServer.renderToNodeStream(reactComponent); 
        bodyStream.on('data', (chunk) => { 
            body.push(chunk.toString()); 
        }); 
        bodyStream.on('error', (err) => {

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const numbers = [10, 20, 30, 40];

const numbersTimes10 = numbers.map((v) => v * 10);
numbersTimes10;
const people = [
  {
    first: 'Jane',
    last: 'Doe',
    address: '123 Main St',
    city: 'New York',

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Outcome

• Identify improvement areas
• Publish your culture - Having a document that describes our culture our values

3 Areas

• Impact
• Choice
• Improvement