nivrith

const array = [1, 0 , {foo: 'bar'}, undefined, null];

const truthyArray = array.filter(Boolean);

//or we can use the double bang !! to do the same thing
const truthyArray = array.filter(value => !!value);

nivrith

function getImageURLById({imageId, asAttachment = false, asThumbnail = false, withCompression = false}) { 
   ...
}

// This is more readable and doesn't require checking the function definition
getImageURLById({imageId: 25, asAttachment: true, withCompression: true});

nivrith

function getImageURLById(imageId, asAttachment = false, asThumbnail = false, withCompression = false) {
  ... 
}

// This is unreadable without checking function definition
getImageURLById(25, true, false, true);
  
  

nivrith

const array = [1, 2, 2, 3,3, 4, 5, 5, 3, 6, 9]

const uniqueArray = [...new Set(array)];

console.log(uniqueArray); //[1, 4, 6, 9]

nivrith

console.log(length);     // 25 and not 0
console.log(message); // "John" and not ""

let length = 0;
console.log(length || 99); // 99
console.log(length ?? 99); // 0

nivrith

let length= 0;
let name= "";

let length = number || 25;
let name = name || "John";

nivrith

let petName;
if(person && person.pet && person.pet.name) {
    petName = person.pet.name;
}

//Can be condensed to 
let petName = person?.pet?.name;

nivrith

const numbers = [1, 2, 3, 4];

for (const number of numbers) {
  console.log(number)
}

// 1
// 2
// 3
// 4

nivrith

const queue = new Queue(10);

queue.add(1);
queue.add(2);
queue.add(3);
queue.add(4);


for(let item of queue) {
  console.log(item);

nivrith

const [first, ...rest] = new Range(1, 10);
console.log(first); // 1
console.log(rese); // [2, 3, 4, 5, 6, 7, 8, 9, 10]