computed property name in an interface error when using [] already

[eyebrowkang]

🔎 Search Terms

A computed property name in an interface must refer to an expression whose type is a literal type or a 'unique symbol' type.ts(1169)

🕗 Version & Regression Information

• This changed between versions 3.3 and 5.4.5

⏯ Playground Link

https://www.typescriptlang.org/play?#code/KYOwrgtgBAouEwB4EMIAcA2woG8BQUhUA1sAJ4CMUAvFAOSmV0A0BRD5AtAM7ADGAexAATOjXqMe-IaNYBfPHgCWIAC7AATgDNkfbAEk1mnXqSpM2fESgBtOJDPosAOkYUAugC4o3VRpUA5gDcbIR28I4WNhxkUoIidO5eUPAARpohCoRAA

💻 Code

enum EnumExample {
    key1 = 'key1',
    'key-second' = 'key-second',
}

interface InterfaceExample {
    [EnumExample.key1]: string;
    [EnumExample['key-second']]: number;
}

🙁 Actual behavior

Has Error: A computed property name in an interface must refer to an expression whose type is a literal type or a 'unique symbol' type.ts(1169)

🙂 Expected behavior

No Error

Additional information about the issue

No response

[MartinJohns]

Duplicate of #25083. Used search terms: enum computed property name

[jcalz]

Regression information is incorrect; this didn’t change between TS3.3 and current (it didn’t work in TS3.3 either).

[typescript-bot]

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