Object derived from spreading a class instance from within the class body has wrong type information

[asnaeb]

Bug Report

🔎 Search Terms

🕗 Version & Regression Information

This happens on any version

⏯ Playground Link

Playground link with relevant code

💻 Code

class A {
    foo = 'bar'
    baz() {
        return {...this}
    }
}

const a = new A()

const obj = a.baz()
obj.baz() // <- No error but: obj.baz is not a function at runtime

const _obj2 = {...a}
obj2.baz() // <- Correct error

🙁 Actual behavior

When spreading a class instance to an object from within the class itself, resulting properties are still presenting methods in its signature.

🙂 Expected behavior

Discarded methods would be removed from the type.

[fatcerberus]

Not destructuring, but spread. Destructuring is when you do the reverse: const { x, y } = point

[RyanCavanaugh]

Duplicate #9726 - enumerability is not tracked by the type system

[fatcerberus]

Interesting that the second example works (or rather, doesn't work) as expected, though

[RyanCavanaugh]

The curse of doing it right some of the time 🙂

[typescript-bot]

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