Sometimes, we want to omit some items from an enum in TypeScript.

In this article, we’ll look at how to omit some items from an enum in TypeScript.

How to omit some items from an enum in TypeScript?

To omit some items from an enum in TypeScript, we can use the Exclude type.

For instance, we write

enum ErrCode {
  Ok = 0,
  Error = 1,
  AccessDeny = 201,
  PostsNotFound = 202,
  TagNotFound = 203,
}

type ErrorErrcode = Exclude<ErrCode, ErrCode.Ok>;

to use Exclude to exclude the ErrCode.Ok value from the ErrCode type and return that as the type.

Then we assign that to the ErrorErrcode type alias.

Conclusion

To omit some items from an enum in TypeScript, we can use the Exclude type.