Andreas,

Oh, that's why! So glad it's a known issue you guys are working on. I hope 
for a fix since it's pretty confusing; the error popped up with let keyword 
said things of const keyword, but nothing from const. Would it be terrible 
to put up a warning when const keywords is spotted in non-strict mode?

Thanks,
Don

On Thursday, August 13, 2015 at 5:52:03 PM UTC+9, Andreas Rossberg wrote:
>
> You currently need to be in strict mode to get ES6 `const` semantics in 
> V8/Chrome. In sloppy mode, you still get the crazy legacy web semantics 
> that isn't block-scoped (similarly with function decls). We have shied away 
> from changing that so far, because we fear it might break the web (on 
> mobile in particular). We have added use counters to Chrome 44+ to get some 
> data about potential breakage.
>
> /Andreas
>

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