contacts.js

const NUM_CONTACTS = 10

const firstNames = [
    'Emma','Noah','Olivia','Liam','Ava','William','Sophia','Mason',
    'Isabella','James','Mia','Benjamin','Charlotte','Jacob','Abigail',
    'Michael','Emily','Elijah','Harper','Ethan','Amelia','Alexander',
    'Evelyn','Oliver','Elizabeth','Daniel','Sofia','Lucas','Madison',
    'Matthew','Avery','Aiden','Ella','Jackson','Scarlett','Logan',
    'Grace','David','Chloe','Joseph','Victoria','Samuel','Riley',
    'Henry','Aria','Owen','Lily','Sebastian','Aubrey','Gabriel',
    'Zoey','Carter','Penelope','Jayden','Lillian','John','Addison',
    'Luke','Layla','Anthony','Natalie','Isaac','Camila','Dylan','Hannah',
    'Wyatt','Brooklyn','Andrew','Zoe','Joshua','Nora','Christopher','Leah',
    'Grayson','Savannah','Jack','Audrey','Julian','Claire','Ryan','Eleanor',
    'Jaxon','Skylar','Levi','Ellie','Nathan','Samantha','Caleb','Stella',
    'Hunter','Paisley','Christian','Violet','Isaiah','Mila','Thomas',
    'Allison','Aaron','Alexa','Lincoln'
]

const lastNames = ['Smith','Jones','Brown','Johnson','Williams','Miller','Taylor',
'Wilson','Davis','White','Clark','Hall','Thomas','Thompson','Moore','Hill','Walker','Anderson',
'Wright','Martin','Wood','Allen','Robinson','Lewis','Scott','Young','Jackson','Adams','Tryniski','Green',
'Evans','King','Baker','John','Harris','Roberts','Campbell','James','Stewart','Lee','County','Turner','Parker',
'Cook','Mc','Edwards','Morris','Mitchell','Bell','Ward','Watson','Morgan','Davies','Cooper','Phillips','Rogers',
'Gray','Hughes','Harrison','Carter','Murphy'
]

// generate a random number between min and max
const rand = (max, min = 0) => Math.floor(Math.random() * (max - min + 1)) + min

// generate a name
const generateName = () => `${firstNames[rand(firstNames.length - 1)]} ${lastNames[rand(lastNames.length - 1)]}`

// generate a phone number
const generatePhoneNumber = () => `${rand(999, 100)}-${rand(999, 100)}-${rand(9999, 1000)}`

// create a person
const createContact = () => ({name: generateName(), phone: generatePhoneNumber()})

// compare two contacts for alphabetizing
export const compareNames = (contact1, contact2) => contact1.name > contact2.name

// add keys to based on index
const addKeys = (val, key) => ({key, ...val})

// create an array of length NUM_CONTACTS and alphabetize by name
export default Array.from({length: NUM_CONTACTS}, createContact).map(addKeys)