union&typeallias.ts

/** Type Allias e Union */

function logDetails(uid: number | string, item: string) {
	console.log(`A product with ${uid} has a title as ${item}`)
}

// uid: number | string => union

logDetails(123, 'sapato')
logDetails('123', 'sapato')

function logInfo(uid: number | string, user: string) {
	console.log(`A user with ${uid} has a name as ${user}`)
}

logInfo('123', 'jarod')
logInfo(123, 'jarod')

// type allias
type Uid = number | string | undefined

function logDetails2(uid: Uid, item: string) {
	console.log(`A product with ${uid} has a title as ${item}`)
}

function logInfo2(uid: Uid, user: string) {
	console.log(`A user with ${uid} has a name as ${user}`)
}

logInfo2('123', 'jarod')
logInfo2(123, 'jarod')

type Platform = 'Windows' | 'Linux' | 'MacOS'

function handlePlatform(platform: Platform) {
	return platform
}

handlePlatform('Windows') // work
handlePlatform('ios') // dont work