Inconsistent behaviour of enum.

[pociej]

🔎 Search Terms

wrong enum behaviour numeric enum wrong check inconsistent enum behaviour

🕗 Version & Regression Information

I see it in all versions of ts

⏯ Playground Link

https://tsplay.dev/N9PO8w

💻 Code

enum myEnum {
    a = 'a',
    b = 'b',
}


enum extendedEnum {
    a = "a", 
    b = "b", 
    //use any number here, 11 is random value 
    c = 11, 
}


//use any number here, 48 is random value 

const returnsMyEnum = function() : myEnum {
    return 48;  
}

const returnMyExtendedEnum = function() : extendedEnum {
    return 48; 
}

🙁 Actual behavior

Only returnsMyEnum gives typescript error.

🙂 Expected behavior

Both functions are wrong.

[jcalz]

Duplicate of #26362

[fatcerberus]

// use any number here, 11 is random value 
c = 11,

I’m suddenly reminded of this
https://xkcd.com/221/

[typescript-bot]

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