ast

💻

• Would you like to work on a fix?

How are you using Babel?

babel-loader (webpack)

Input code

type FuncWithDescription = [
  function: (...args: any[]) => any,
  string: string
]

https://babeljs.io/repl#?browsers=defaults&build=&builtIns=false&corejs=3.6&spec=false&loose=false&code_lz=C4TwDgpgBAYgrgOwMYHUCWwAWARCBnJAJzTGDQHsEoBeKAbQCgooAzRJMygLigAoA

Is your feature request related to a problem? Please describe.

No MappedTypeNode definition in ts-morph.
No TypeQueryNode definition in ts-morph.
No TypeOperatorNode definition in ts-morph.

Piranha transforms:

someConsumer.accept((x) -> { 
                                        if(exp.isTreated(STALE_FLAG)){
                                           doSomething(x);
                                        }
                                        else{
                                           domeSomethingElse(x);
                                        }
           

problem: the shadow classes (CtClass reflecting a binary class) built by JavaReflectionTreeBuilder can be modified. This is confusing for users, see INRIA/spoon#4664.

solution: the JavaReflectionTreeBuilder should construct immutable objects, closed to modification, where all setters throw an UnsupportedOperationException