ptesser

{
  "compilerOptions": {
    ...
    "noImplicitAny": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    ...
  }
}

ptesser

{
  "rulesDirectory": [
    "node_modules/codelyzer"
  ],
  "extends": [
    "tslint:recommended"
  ],
  "rules": {
    "arrow-return-shorthand": true,
    "callable-types": true,

ptesser

const X_WWW_FORM_URLENCODED_OPTIONS = {
  headers: new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded')
};

export const USER_KEY = 'user';
export const USERNAME_KEY = 'username';
export const TOKEN_KEY = 'token';
export const INSTITUTION_KEY = 'institution';

@Injectable()

ptesser

{
  "compilerOptions": {
    "paths": {
      "@src/*": ["./*"],
      "@app/*": ["./app/*"],
      "@pages/*": ["./pages/*"],
      "@env": [ "environments/environment" ]
    }
  },

ptesser

import { Observable } from 'rxjs';
import { filter } from 'rxjs/operators';

function inputIsNotNullOrUndefined<T>(input: null | undefined | T): input is T {
  return input !== null && input !== undefined;
}

export function isNotNullOrUndefined<T>() {
  return (source$: Observable<null | undefined | T>) =>
    source$.pipe(

ptesser

// Youtube Keys
YOUTUBE_API_KEY: 'AIzaSyBSnGWkvGIBpXONyAKv5Gt3OofBv0IaHkw',
// (angular-courses project in p.tesser921 account) AIzaSyDF0QpmbBwnZsNCCZeBln2hFjqD2KiSGkk
YOUTUBE_API_URL: 'https://www.googleapis.com/youtube/v3',

// Trending params
const params: string = [
  'chart=mostPopular',
  'regionCode=IT',
  'part=snippet,contentDetails,statistics',

ptesser

Excel in JS

SheetJS

• SheetJS/sheetjs#642
• SheetJS/sheetjs#364
• https://stackoverflow.com/questions/50110595/how-to-add-cell-border-to-sheetjs-xlsx-generated-file

A lot of features as add image or style cell are available only on Pro account.