std.data.json formal review

[Suliman via Digitalmars-d]

On Friday, 31 July 2015 at 12:16:02 UTC, Sönke Ludwig wrote:
> Am 31.07.2015 um 10:13 schrieb Suliman:
>> is the current build is ready for production? I am getting 
>> error:
>>
>> source\stdx\data\json\value.d(81): Error: safe function
>> 'stdx.data.json.value.JSONValue.this' cannot call system 
>> function
>> 'std.variant.VariantN!(12u, typeof(null), bool, double, long, 
>> BigInt,
>> string, JSONValue[],
>> JSONValue[string]).VariantN.__ctor!(typeof(null)).this'
>
> 2.068 "fixed" possible safety issues with VariantN by marking 
> the interface @system instead of @trusted. Unfortunately that 
> broke any @safe code using Variant/Algebraic.

Wat revision are usable? I checked some and all have issue like:

source\App.d(5,34): Error: template 
stdx.data.json.parser.parseJSONValue cannot
deduce function from argument types !()(string), candidates are:
source\stdx\data\json\parser.d(105,11):        
stdx.data.json.parser.parseJSONVa
lue(LexOptions options = LexOptions.init, Input)(ref Input input, 
string filenam
e = "") if (isStringInputRange!Input || 
isIntegralInputRange!Input)