[Issue 20310] New: std.json to(Pretty)String not pure

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20310

          Issue ID: 20310
           Summary: std.json to(Pretty)String not pure
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: phobos
          Assignee: nobody at puremagic.com
          Reporter: rschadek at symmetryinvestments.com

toString and toPrettyString of std.json are not pure.

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