balanza

type ConfirmedMobile = string & { __random_transparent_property: never }
type UnconfirmedMobile = string & { __another_random_transparent_property: never }
type CertifiedMobile = string & { __again_random_transparent_property: never }
type Mobile =  // ConfirmedMobile | UnconfirmedMobile | CertifiedMobile :)
    ConfirmedMobile 
    | UnconfirmedMobile 
    | CertifiedMobile

const printString = (p: string) => console.log(`print String ${p}`)
const printConfirmedMobile = (p: ConfirmedMobile) => console.log(`print ConfirmedMobile ${p}`)

balanza

// it's just a cast ;)
const createOf = <T extends Base, Base>(original: Base) => <T>original

balanza

type ConfirmedMobile = string & { __phantom_1548946378096: never }
const createConfirmedMobile = (num: String) => createOf<ConfirmedMobile, String>(num)

type CertifiedMobile = string & { __phantom_1548946391842: never }
const createCertifiedMobile = (num: String) => createOf<CertifiedMobile, String>(num)

const confirmed = createConfirmedMobile('2984829202') 
// ^^^ ConfirmedMobile
const certified = createCertifiedMobile('2984829202') 
// ^^^ CertifiedMobile

balanza

type Foo = {
    value: string, 
    __phantom: never
}
const f = () => { throw '' }
const x: Foo = { value: 'foo', __phantom: f() }

balanza

// email.ts

import { Email } from './mobile';
export type Email = string & { __phantom_1549009918142: never }

export const createEmail = (input: string): Email | Error => {
 const pattern = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0–9]{1,3}\.[0–9]{1,3}\.[0–9]{1,3}\.[0–9]{1,3}])|(([a-zA-Z\-0–9]+\.)+[a-zA-Z]{2,}))$/
 if(pattern.test(input)) return createOf<Email, string>(input)
 else return new Error(`invalid email format: ${input}`)
}

balanza

import Swagger from 'swagger-client';

const url = 'https://petstore.swagger.io/v2/swagger.json'; // or where the spec is

const requestInterceptor = req => {
  // Here you can add custom headers 
  // ex: req.headers['Authorization'] = 'Bearer <YOUR TOKEN>';
  return req;
};

balanza

# get latest commit with passing tests
while true; do npm test && break || git checkout HEAD~1; done

# count how many commits in between
echo $(($(git rev-list --count HEAD..master) - 1))

# checkout where things got broken
while true; do npm test && break || git checkout HEAD~1; done; git checkout master~$(($(git rev-list --count HEAD..master) - 1))

balanza

{"lastUpload":"2019-12-19T15:29:42.810Z","extensionVersion":"v3.4.3"}

balanza

#!/bin/bash

bold=$(tput bold)
normal=$(tput sgr0)

# project name
REPO=$1 
# github owner 
GH_ORG=$2
# azure devops organization

balanza

Git for noobs

Una serie di comandi base per operare con git senza essere esperti

Fare il punto della situazione

git status

Ti dice in che branch ti trovi, quali file hai modificato, quali sono nell'index.

Annullare tutte le modifiche fatte