enum error

[tangjfn]

🔎 Search Terms

enum

🕗 Version & Regression Information

TypeScript 5.4.x
5.3.x is OK

⏯ Playground Link

https://www.typescriptlang.org/play?ts=5.4.1-rc#code/MYewdgzgLgBApmArgWxgQRgbwFAzzAOQEMCYBeGARgBpd8BJMAMwEswWoBPcmAJmwC+QA

💻 Code

const enum A {
    NaN = 1,
    Infinity = 2
}

🙁 Actual behavior

An enum member cannot have a numeric name.(2452)

🙂 Expected behavior

no error here

Additional information about the issue

No response

[Andarist]

It's working as intended and this change has been called out by the recent release notes: https://devblogs.microsoft.com/typescript/announcing-typescript-5-4/#name-restrictions-on-enum-members

[typescript-bot]

This issue has been marked as "Working as Intended" and has seen no recent activity. It has been automatically closed for house-keeping purposes.