IsValidSimpleAssignmentTarget equivalent for delete?

[Alan Schmitt]

Hello,

ES6 introduces IsValidSimpleAssignmentTarget to make an early error the
attempt to assign to something that is obviously not a reference. For
instance

#+begin_src javascript
((function () { throw 42 })()) = 3;
#+end_src

is now a syntax error.

Is there a reason why the same does not apply to the delete operator,
such as in the following ?

#+begin_src javascript
delete ((function () { throw 42 })())
#+end_src

Thanks,

Alan

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