super call in an subclass arrow function property needs type error (prevents a runtime error)

[trusktr]

Bug Report

🔎 Search Terms

super call subclass arrow function

🕗 Version & Regression Information

• This is a crash (runtime, with no type error)
• This changed between versions ______ and _______
• This is the behavior in every version I tried, and I reviewed the FAQ for entries about _________
• I was unable to test this on prior versions because _________

⏯ Playground Link

Playground link with relevant code

💻 Code

class Foo {
  method = () => {
    console.log('Foo.method')
  }
}

class Bar extends Foo {
  method = () => {
    super.method() // Should be a type error, because this fails at runtime.
    console.log('Foo.method')
  }
}

new Bar().method()

🙁 Actual behavior

No type error, but there is a runtime error. Here's the error in Chrome:

TypeError: (intermediate value).method is not a function

🙂 Expected behavior

TypeScript can show a type error for this case.

[MartinJohns]

Duplicate of #24678. Used search terms: super property in:title

[RyanCavanaugh]

Same as #42214

[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.