Before You File a Proposal Please Confirm You Have Done The Following...

• I have searched for related issues and found none that match my proposal.
• I have searched the current rule list and found no rules that match my proposal.
• I have read the FAQ and my problem is not listed.

Relevant Package

ast-spec

My proposal is suitable for this project

• I believe my proposal would be useful to the broader TypeScript community (meaning it is not a niche proposal).

Description

abstract class A  {
  abstract method() { }
}

Should not be allowed

1245: Method 'method' cannot have an implementation because it is marked abstract. 2:12 - 2:18

Additional Info

No response