Using Enums and Literal Types

In this lesson, we'll use enums and literal types.

We'll cover the following

Defining enums
Assigning enum values

TypeScript includes many different ways to specify a type that is limited to a few values. We’ve just looked at literal types, but those are merely a subset of what we can do in TypeScript using an enumerated type, or enum.

Defining enums

The flexibility of TypeScript enums allows us to do many things that at first may seem unuseful.

Simply put, we can define an enum in TypeScript by providing a list of values for it. So, if we wanted to convert our TicketStatus type to an enum, we could do this:

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Getting Started

Client-side Rails

Turbolinks

Stimulus

React

Cascading Style Sheets

TypeScript

Webpack

Webpacker

Talking to the Server

Immediate Communication with ActionCable

Managing State in Stimulus Code

Managing State in React

Using Redux to Manage State

Validating Code with Advanced TypeScript

Testing with Cypress

More Testing and Troubleshooting Basics

Appendix

Using Enums and Literal Types

Defining enums