microsoft / microsoft/TypeScript
Destructuring all but one key dynamically via rest creates an unusable type by omitting all of its keys
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Descripción
### 🔎 Search Terms
"Destructuring", "Omit, "keyof type> not assignable to Partial",
### 🕗 Version & Regression Information
- This is the behavior in every version I tried, and I reviewed the FAQ for entries about destructuring and Omit and found a somewhat related thing under 'Add a Key Constraint to Omit' but that isn't the change necessitated here
### ⏯ Playground Link
https://www.typescriptlang.org/play/?#code/JYOwLgpgTgZghgYwgAgJLmvJyDeAoZZABgC5kQBXAWwCNoBuA5AexAjIGcwpQBzRwmADuzMjWbMANhDghGAXzx4YFEAjDBWyACoQuAHgAmcMHG0BPAA4QAfAApjpso7NWIAGmSQuAaQjmyAGt-ZhhkFwtrAEpcJmkwZEs4KA04SQAREzgyAAVk1MkjLMjbZABecKyBZARWLhrJVggAdWAwAAtmCjA-c3LkO2CA5CHQytMSmLKbWMJCWpB6nGQAbSGAXTIAfU8AOn3mDuhM02R5fqSU4DSTuGrCS4Lb-sP246qAegAqL5LkAHIAPJUNr6PJXNJFCZuGyeUZhCIw-7IYAcciHZBwDgcYC8EBwGjSLzMLxuAHggpQ1zWGz-XZMP7-eHjakQZGo9EJLE4vEEolgElgMn-ACiAA8EJIKIYIPpmYjrHCQgjikj6XMdMKuDwQLxkAAfcjUOhQA3IDjmWhSdlokAY7m4-GElAC0nWAFsABu0DpTA1jO1fBtnMx2MdfJdguFXp9ux+HyY8mqkqarQ6XR6-js3kz5ii1SgEDAFCgIES+WuGSqeEUeF0BnQkFgiFsdmWpGQABYAEyeJpkABEHULEAHnmEomQ8EkHBQ8k8A6aA-zQA
### 💻 Code
```ts
interface Interface {
0: number;
one: string;
two: boolean;
}
function Test(data: dataType, testKey: keyof dataType) {
let partialData: Partial = data;
const cloneWithoutKey = (key: keyof dataType) => {
const { [key]: _, ...otherData } = partialData;
partialData = otherData;/**Type 'Omit, keyof dataType>' is not assignable to type 'Partial'.
Type 'keyof dataType' is not assignable to type 'Exclude'.
Type 'string | number | symbol' is not assignable to type 'never'.
Type 'string' is not assignable to type 'never'.**/
};
cloneWithoutKey(testKey);
return partialData;
}
Test({ 0: 42, one: "three", two: false }, "one");
```
### 🙁 Actual behavior
otherData resolves to never and is not assignable to partial data
### 🙂 Expected behavior
the rest parameter should be resolved to a partial of the datatype
### Additional information about the issue
_No response_
Guía de contribución
Línea de trabajo
Comienza con la reproducción vinculada en TypeScript Playground y sigue cómo se comprueban la desestructuración de objetos con claves calculadas y los tipos de object-rest. Confirma la corrección comprobando que `otherData` es asignable a `Partial` en el ejemplo genérico, manteniendo al mismo tiempo el comportamiento esperado de omisión.
Escrito por el modelo de indexación a partir del texto del issue.
Evaluación
- Stack tecnológico
- typescript
- Área
- compilers
- Tipo de issue
- Error
- Dificultad
- 4/5
- Tiempo estimado
- 3-5 días
- Estado de actividad
- Estancado
- Claridad
- Bastante claro
- Aptitud para principiantes
- 35/100