The child class should not be able to access the class field defined by the parent class via super

[Jack-Works]

Bug Report

The child class should not be able to access the class field defined by the parent class via super

🔎 Search Terms

class field super parent

🕗 Version & Regression Information

Happens on 5.1.0-beta

⏯ Playground Link

Playground link with relevant code

💻 Code

class T {
 field = () => {}
}
class T2 extends T {
 f() {
 super.field()
// ~~~~~~~~~~~
 }
}

new T2().f()

🙁 Actual behavior

No type error

🙂 Expected behavior

Type error.

super will look for the parent class, but the class field is always defined on the current instance.

[fatcerberus]

I don’t think the type system can make this distinction of “it’s an instance property of T except in cases where T is accessed through super” so this will likely be closed as a design limitation.

[Jack-Works]

fix is available

[Jack-Works]

I don’t think the type system can make this distinction of “it’s an instance property of T except in cases where T is accessed through super” so this will likely be closed as a design limitation.

TypeScript can

[Josh-Cena]

Duplicate of #35314

[microsoft-github-policy-service]

This issue has been marked as a 'Duplicate' and has seen no recent activity. It has been automatically closed for house-keeping purposes.

[microsoft-github-policy-service]

This issue has been marked as a 'Duplicate' and has seen no recent activity. It has been automatically closed for house-keeping purposes.