Const strings don't narrow their length property

[bbrk24]

🔎 Search Terms

const string length

🕗 Version & Regression Information

• This is the behavior in every version I tried, and I reviewed the FAQ for entries about const strings

⏯ Playground Link

https://www.typescriptlang.org/play?#code/MYewdgzgLgBAhgJwTAvDA2gcjpgNDTAIzwOEwF14IZRIoBuAKFuhmmTW0LKpvGibN+sRAgAyAUzCp4SAHQAbKQHMoACyYB6TTF0wAegH4hdNlHFSZ7RSvVadeo4yA

💻 Code

const arr = ['a', 'b', 'c'] as const;
const str = 'abc' as const;

const arrLen = arr.length;
//    ^? const arrLen: 3
const strLen = str.length;
//    ^? const strLen: number

🙁 Actual behavior

The length property of the constant string is of type number

🙂 Expected behavior

The length property of the constant string should be 3, like it is for the constant array.

[fatcerberus]

Looks like a duplicate of #34692. Related issue: #41037

[typescript-bot]

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