Kamilnaja

// 1
const date = new Date(Date.UTC(2020, 11, 20, 3, 23, 16, 738));
console.log(new Intl.DateTimeFormat('pl-PL', {dateStyle: 'full'}).format(date));
// niedziela, 20 grudnia 2020

// 2
const vehicles = ['Motor', 'bus', 'samochód'];
const formatter = new Intl.ListFormat('pl', { style: 'long', type: 'conjunction' });
console.log(formatter.format(vehicles));
// Motor, bus i samochód

Kamilnaja

"window.titleBarStyle": "native" - focus on navbar on alt
smooth scroll 
smooth caret

Kamilnaja

const fs = require('fs');
let rawData = fs.readFileSync('data.json');
let data = JSON.parse(rawData);
const convertToNumber = item => {
  item.workTimeRangeSum = Number(item.workTimeRangeSum.split(':').join('.').replace(/\.3/g, '.5'));
  return item;
}

const res = data.workDays
  .map(item => {

Kamilnaja

// so, you have list of users like this

const users = [
    { id: '1', name: 'hello' },
    { id: '2', name: 'world' },
    { id: '3', name: 'hello' },
    { id: '1', name: 'hello' },
    { id: '1', name: 'hello' },
]

Kamilnaja

// So, you have input data like this

let objArr = [
    { id: 1, name: 'Kamil' },
    { id: 2, name: 'Janusz' },
    { id: 3, name: 'Mariusz' },
    { id: 4, name: 'Alina' },
    { id: 5, name: 'Olo' } ];

Kamilnaja

// I think, that this is an interesting answer. Check if object key exists, if yes, double

const columns = [
    { name: 'one', title: 'Order Number', id: 1 },
    { name: 'two', title: 'Strawberry', id: 2 },
    { name: 'three', title: 'Vanilla', id: 3 }
];

    const mapped = columns.map(
        item => item.id ? item.id = item.id * 2 : item

Kamilnaja

type HTMLElementEvent<T extends HTMLElement> = Event & {
    target: T;
}

let res = allEvents$.subscribe((item: HTMLElementEvent<HTMLButtonElement>) => {
    console.log(item.target.value);
})

Kamilnaja

import { from } from "rxjs";
import { filter, reduce } from "rxjs/operators";

let candidates = [
    { name: 'Brendan Eich', experience: 'JavaScript Inventor' },
    { name: 'Emmet Brown', experience: 'Historian' },
    { name: 'George Lucas', experience: 'Sci-fi writer' },
    { name: 'Alberto Perez', experience: 'Zumba Instructor' },
    { name: 'Bjarne Stroustrup', experience: 'C++ Developer' }
];

Kamilnaja

abstract class Beverage {
  description: string = "unknown beverage";
  public getDescription(): string {
    return this.description;
  }
  public abstract cost(): number;
}

abstract class CondimentDecorator extends Beverage {
  abstract getDescription(): string;

Kamilnaja

class Knight {
  constructor(private name: string, private age: number) { }

  public getAge(): number {
    return this.age;
  }

  public getName(): string {
    return this.name;
  }