Question: IsImplicitConstructor in Entity methods from signature files #676
Description
Related to fable-compiler/Fable#571
Fable relies on the property IsImplicitConstructor to translate F# code to JS, as ES2015 classes only accept one unique constructor and the others must be compiled as mangled static methods. However when checking a method from an entity declared in a signature file (.fsi) IsImplicitConstructor always evaluates to false so the constructor call gets compiled wrongly (as Fable thinks it's a static method).
Would it be possible to have IsImplicitConstructor evaluate the same way no matter if it's coming from a signature or an implementation file? Or at least, how can the implementation Entity be accessed from a signature Entity reference? (I haven't found an easy way to do this.)