kevboutin

const areEqual = (arr1, arr2) =>
  arr1.sort().join(',') === arr2.sort().join(',');
const arr1 = [1, 2, 3, 4];
const arr2 = [3, 4, 1, 2];
const arr3 = [1, 2, 3];
console.log(areEqual(arr1, arr2)); // true
console.log(areEqual(arr1, arr3)); // false

kevboutin

/* The old way:
const reverseString = (str) => {
  let reversed = '';
  for (let i = str.length - 1; i >= 0; i--) {
    const ch = str[i];
    reversed += ch;
  }
  return reversed;
};
const reverse = reverseString('javascript');

kevboutin

const groupBy = (arr, groupFn) => {
  const grouped = {};
  for (const obj of arr) {
    const groupName = groupFn(obj);
    if (!grouped[groupName]) {
      grouped[groupName] = [];
    }
    grouped[groupName].push(obj);
  }
  return grouped;

kevboutin

const sgMail = require('@sendgrid/mail');

sgMail.setTimeout(40000);

const TAG = 'emailUtility';
const DEFAULT_SENDER = 'donotreply@somedomain.com';

/**
 * Send an email.
 *

kevboutin

const twilio = require('twilio');

const TAG = 'smsUtility';

/**
 * Send an SMS text message.
 *
 * Example response from Twilio:
 * {
 *   "account_sid": "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",