[Bug]: mixins and implements should not allowed in flow DeclareInterface and InterfaceDeclaration #15387
Description
💻
- Would you like to work on a fix?
How are you using Babel?
babel-loader (webpack)
Input code
interface A implements B {}
interface A mixins B {}
declare interface A implements B {}
declare interface A mixins B {}Configuration file name
No response
Configuration
No response
Current and expected behavior
Should all invalid
Environment
Latest
Possible solution
No response