Microsoft/TypeScript
Auf GitHub ansehenComputed property invalid in type declaration emitted in d.ts file
Open
#60.818 geöffnet am 19. Dez. 2024
Domain: Declaration EmitHelp WantedPossible Improvement
Repository-Metriken
- Stars
- (48.455 Stars)
- PR-Merge-Metriken
- (Durchschn. Merge 6T 17h) (9 gemergte PRs in 30 T)
Beschreibung
🔎 Search Terms
computed property unique symbols declaration emit
🕗 Version & Regression Information
- This is the behavior in every version I tried
⏯ Playground Link
💻 Code
class T {
static readonly ["t"]: unique symbol;
}
let x: {
[T["t"]]: number;
};
let y = {
[T["t"]]: 1
}
🙁 Actual behavior
The type of x has an error saying: A computed property name in a type literal must refer to an expression whose type is a literal type or a 'unique symbol'
The type of y is emitted in declaration files just like the type of x and causes an error in the d.ts file
🙂 Expected behavior
The type of x should be valid. If we use a non-computed property name, the type would be valid (let x: { [T.t]: number; }, Playground Link). Declaration emit should not emit invalid code.
Additional information about the issue
Probably fixed by #60052 since the limitation on computed property names in types goes away.