microsoft / microsoft/TypeScript

Error when spreading a union of tuples in a call

Abierto
#42,508 6 comentarios 0 reacciones 1 asignado Ver en GitHub

@sandersn ya está trabajando en esto.

Desde el 27/4/2021.

Bug Domain: check: Type Inference Rescheduled
Lenguaje dominante
Go
Estrellas
111k
Forks
14.3k
Merge medio
2 d 4 h
PR fusionados (30 d)
132

Descripción

Bug Report

🔎 Search Terms

destructure array typescript union

🕗 Version & Regression Information

I used the playground to test different versions and it looks like this has always occured.

  • This is the behavior in every version I tried, and I reviewed the FAQ for entries about "Type Systems behavior", "Type Guards", "Functions".
⏯ Playground Link

Playground link with relevant code

💻 Code
const t = [4,20] as const
const t2 = [4, 20, 30] as const
const t3 = [10, 10] as [number, number] | [number, number, number]

// Works
new Date().setHours(...t)
new Date().setHours(...t2)

// Error: Expected 1-4 arguments, but got 0 or more.
new Date().setHours(...t3)
🙁 Actual behavior

Error: Expected 1-4 arguments, but got 0 or more.

The array type passed as a length of 2 or 3 so the message "got 0 arguments" is wrong.

🙂 Expected behavior

I expect the compiler should be able to recognize that the array type can only have length 2 or 3 and would not throw an error.

Guía de contribución

Abrir la guía de contribución

Primeros pasos

  1. Lee el issue completo y luego la guía de contribución del proyecto.
  2. Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
  3. Haz un fork del repositorio y trabaja en una rama.
  4. Abre un pull request que haga referencia al número del issue.

Evaluación

Este issue todavía no se ha evaluado.

Recibe los nuevos issues en tu correo

Un resumen breve de issues de GitHub para principiantes.