Microsoft/TypeScript

Error type on spreading array with additional props

Open

#59 849 ouverte le 4 sept. 2024

Voir sur GitHub
 (1 commentaire) (0 réactions) (0 assignés)TypeScript (6 726 forks)batch import
BugDomain: IntersectionHelp Wanted

Métriques du dépôt

Stars
 (48 455 stars)
Métriques de merge PR
 (Merge moyen 6j 17h) (9 PRs mergées en 30 j)

Description

🔎 Search Terms

array intersection spread any

🕗 Version & Regression Information

  • This is the behavior in every version I tried

⏯ Playground Link

https://tsplay.dev/wOdoMN

💻 Code

type withExtraProps = extractArray<{ name: string } & string[]>;
//   ^? any[]

type extractArray<t extends readonly unknown[]> = [...{ [i in keyof t]: t[i] }];

🙁 Actual behavior

Inferred as any[] due to an internal error type

🙂 Expected behavior

Inferred as string[]

Additional information about the issue

@Andarist mentioned this could be related to https://github.com/microsoft/TypeScript/issues/59260

Guide contributeur