What would a 1JS-friendly strict mode look like?

Felipe Nascimento de Moura felipenmoura at gmail.com
Thu Dec 18 05:19:20 PST 2014

Wouldn't it be interesting to have a "scope" variable? as is arguments...

Something like

    window.scope.set('strict', true);


        "strict": true,
        "experimental": true,
        "safe": false

    // then, other functions could turn on/off some of it
    someEl.addEventListener('click', function(){
        scope.set('safe', true);
        // or even
        if( scope.get('experimental') ){
            // doSomethingNew();


This is just a "raw" suggestion, and personally, I think it should NOT be
possible to turn off an "strict" or "safe" definition, even when it comes
from a parenting scope.
But this way, it would be "polyfillable", future-friendly, for new stuff
and new versions of ES, and browser support, and maybe the new scope
feature might bring some other benefits, such as a native "supports" for
new feature, or a new way to support sandboxed scopes.

I wonder if something like this couldn't be used to define a scope as a
"worker", to run in a new process thread(sandboxed, in this case).

Let me know what you think, or if you haven't already discussed something


On Thu, Dec 18, 2014 at 10:46 AM, Alex Kocharin <alex at kocharin.ru> wrote:
> 16.12.2014, 17:04, "Andrea Giammarchi" <andrea.giammarchi at gmail.com>:
> On Tue, Dec 16, 2014 at 1:50 PM, Felipe Nascimento de Moura <
> felipenmoura at gmail.com> wrote:
> function () {
>     use strict, safe;
> }
> This could allow us to even add some extra scoped-options, such as a safe
> mode..
> I'm quite sure we've discussed already other directives and the unanimous
> answer here was "NO, 'use strict' is already problematic"
> It's problematic mostly because it can't be turned off when it's needed.
> So another directive like "use nostrict" would be welcome imho. Especially
> in modules when "strict" is on by default.
> I think we should either deprecate one of the modes, or officially support
> multiple modes and provide a method to switch between them.

*Felipe N. Moura*
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