use Cpanel::JSON::XS or JSON::XS or JSON::PP
This module first checks to see if either Cpanel::JSON::XS or JSON::XS (at at least version 3.0) is already loaded, in which case it uses that module. Otherwise it tries to load Cpanel::JSON::XS, then JSON::XS, then JSON::PP in order, and either uses the first module it finds or throws an error.
Maintainer: Alexander Bluhm <bluhm@openbsd.org>