=== on 18 Oct 2016, 10:47:28 Pierre-Yves Nicolas wrote:
We may raise false positives when one of the operands is an ``++Object++``. An ``++Object++`` which wraps some kind of number may have a valid ``++valueOf++`` method: see https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Object/valueOf#Examples[an example].

If we see that we raise too many false positives, we can:

* raise an issue only on some kinds of ``++Object++`` for which we know that there is a problem: ``++Array++``, ``++Date++``, ``++Function++``, ``++Regexp++``
* keep the same exception on ``+`` for these kinds of operand

=== on 25 Oct 2016, 15:44:36 Pierre-Yves Nicolas wrote:
\[~jeanchristophe.collet] I think that the message should always be "imperative", e.g. "Remove...", "Change...".

=== on 25 Oct 2016, 15:47:45 Pierre-Yves Nicolas wrote:
\[~jeanchristophe.collet] What about ``+++=++``?

=== on 25 Oct 2016, 16:01:10 Jean-Christophe Collet wrote:
I addressed both comments above.

=== on 31 Oct 2016, 12:24:53 Pierre-Yves Nicolas wrote:
More detailed message: "The value of this operand is (undefined|an object) on at least one path of execution. Refactor the code to avoid having NaN ("Not a Number") as the result of the parent expression."