Would it be possible to update signatures to contain new methods (functions, objects, ...) from EcmaScript 6 (Promise, Set, setPrototypeOf(), observe() etc.)? Something is already supported in latest browsers.
*** This bug has been marked as a duplicate of bug 242387 ***
IMHO not a duplicate, this is about getting new methods/functions for core objects like Promise, Array, Object etc., not about new syntax features.
Done in dev builds of NB 8.2