Breaking News: Grepper is joining You.com. Read the official announcement!

type alias in typescript

Add Answer

Leo answered on December 31, 2021 Popularity 10/10 Helpfulness 3/10

answer type alias in typescript

related type aliases can only be used in typescript files

related TypeScript Aliases

type alias in typescript

Comment

type StringAlias = string;
type NumberAlias = number;
// aliases for 'normal' types

type SixAlias = 6;         
type MyFavouriteFood = "burger"; 
// aliases for 'literal' types
// these are usually useless on their own

type Food = MyFavouriteFood | "pizza" | "pasta" | "salad";
// they get useful when you combine them:
// a Food can be one of these choices.

type Foods = Food[];
// this is an alias for an array of Foods.

type SuccessfulResponse = {
	message: string,
  	statusCode: number,
  	attachment?: string,
	preferredFoods?: Foods,
}                          
// Now we define a SuccessfulResponse type as the type of a
// JS literal object with two required and two optional attributes.
// Note that you could also use an interface in this case.

type SuccessfulResponseHandler = (res: SuccessfulResponse) => void;
// This is a type alias for a function.


// tl;dr: You can alias every type in TypeScript and chain them.
// This is very useful for reusability and readability.

Popularity 10/10 Helpfulness 3/10 Language typescript

Source: Grepper

Tags: type-alias typescript

Link to this answer
Share Copy Link

Contributed on Dec 31 2021

Leo

0 Answers Avg Quality 2/10

Closely Related Answers

type aliases can only be used in typescript files

Comment

check the file extention and change it to .ts/tsx format

Popularity 10/10 Helpfulness 1/10 Language typescript

Source: Grepper

Tags: typescript t

Link to this answer
Share Copy Link

Contributed on Nov 16 2022

siam88

0 Answers Avg Quality 2/10

TypeScript Aliases

Comment

type alphanumeric = string | number;
let input: alphanumeric;
input = 100; // valid
input = 'Hi'; // valid
input = false; // Compiler error
Code language: JavaScript (javascript)

Popularity 9/10 Helpfulness 1/10 Language whatever

Source: www.typescripttutorial.net

Tags: aliases

Link to this answer
Share Copy Link

Contributed on Jan 27 2024

Ariful Islam Adil(Code Lover)

0 Answers Avg Quality 2/10

type alias in typescript

Contents

More Related Answers

type alias in typescript

Closely Related Answers

type aliases can only be used in typescript files

TypeScript Aliases

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.