`quick fix` to fill in missing properties not available on mapped type

[snowpuddles]

Bug Report

🔎 Search Terms

"quick fix mapped type" "add missing properties mapped type"

🕗 Version & Regression Information

• Based on changing version with the playground below, 4.5+ when quick fix was added
• Behavior is still present on Nightly

⏯ Playground Link

Playground link with relevant code

💻 Code

See playground link for full example.

interface BasicType{
  numb: number,
  name: string,
}
interface OtherType{
  bool: boolean
}
interface MappingType{
  basic: BasicType,
  other: OtherType
}
function test2<T extends keyof MappingType>(type: T, obj: MappingType[T]):string{
  return "arbitrary"
}
//TS2345, understands `obj` is of type `BasicType`, `quick fix` not available
const val2 = test2("basic",{});

🙁 Actual behavior

• TS-2345 for both lines in the playground.

• quick fix is available for function call using type directly.

• quick fix is not available for function call using mapped type even though TS does understand its type.

Error message is the same for both:

Argument of type '{}' is not assignable to parameter of type 'BasicType'.
  Type '{}' is missing the following properties from type 'BasicType': numb, name(2345)

🙂 Expected behavior

• TS-2345 for both lines in the playground.
• quick fix for TS-2345 to "add missing properties" to be available on both empty function call parameters.

[DanielRosenwasser]

Thanks @a-tarasyuk!

[RyanCavanaugh]

I believe this is a new speed record for community reported -> community fixed -> team merged??

[snowpuddles]

I'm incredibly impressed and thankful. ❤️

Especially for something super minor.