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/[0-9]{3}\.[\d*]{3}\.[\d*]{3}[-]?[0-9]{2}/

455.423.333-24 // 455.***.***-24

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function mostCommonWord(paragraph: string, bannedWords?: string[]): string {
    let invalid = new Set(["!","?","'",",",";","."," "]);
    let banned = new Set(bannedWords);
    // set can be a type of a array
    let words = new Map();
    // map should return values and use set to config new values
    let buffer = ""
    let result = "";
    
    for(let ptr = 0; ptr < paragraph.length; ptr++) {

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console.log('-- types: undefined, boolean, number, string, object --');
console.log(typeof undefined);  // undefined
console.log(typeof null);       // object
console.log(typeof NaN);        // number
console.log(typeof false);      // boolean
console.log(typeof 0);          // number
console.log(typeof "");         // string
console.log(typeof []);         // object
console.log(typeof {});         // object

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interface User {
    id: number,
    name: string,
    [key: string]: unknown,
}

const usertype = {
    id: 1,
    name: 'andreia'
}

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// difference beetween race and all

// ALL

const promise1 = new Promise((resolve, reject) => {
    setTimeout(() => {
        resolve('promise1 resolved! timeout')
    }, 2000)
})

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import { Component, EventEmitter, Input, OnChanges, OnInit, Output, SimpleChanges } from '@angular/core';

@Component({
  selector: 'my-app',
  template: `
  <app-value-provider (typedValue)="recivedValue($event)"></app-value-provider>
  <app-value-receiver  *ngIf="valueOfInput" [printValue]="valueOfInput"></app-value-receiver>
  `,
})
export class AppComponent implements OnChanges {

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<input type=text [value]="received some value"/>
<input type=text (keyUp)="emit some value"/>

<input type=text [(value)]="emit and received some value (update template "html" and component (ts file)"/>

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@Injector // it says to angular that this service or class can be use without a parameter, 
automatize without parameter of constructor

example:
class ServiceOrOtherClass {
  constructor(http: httpClient) {
  }
}
Decorator is a special kind of declaration that can be attached to a class declaration, method, accessor, property, or parameter

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ngFor, ngIf says instructs for template what to do 

 I have a list, so ngFor, loop this array and show the list

 I have this variable, if true, ngIf, show this variable

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// sass can use  directly inside @component

styles: [$font-size: 40em]

ng build doesnt need anymore of --prod flag

remove IE11 suppport to IE11

// angular 13