TypeScript Enums

Introduction

Example

1/* this creates an enum */
2enum UserRole {
3  Admin = "ADMIN",
4  Editor = "EDITOR",
5  Viewer = "VIEWER"
6}
7
8const myRole: UserRole = UserRole.Admin;

Key Points

• Enums can be numeric (0, 1, 2) or string-based ("A", "B", "C").
• String enums are usually easier to debug.
• They prevent spelling mistakes when typing out specific options.
• Unlike interfaces, Enums compile into actual JavaScript code.