Ed J

I have recently started porting the reference implementation of GraphQL for JavaScript to Perl, sponsored by Perl Careers. My key considerations:

• Use as "modern" Perl as possible: one of the Mo* family, plus type-checking
• Follow the JS implementation where it makes sense, but be open to more Perlish ways where that's easier/better

You can see the GitHub repo at https://github.com/graphql-perl/graphql-perl, and the MetaCPAN page for the distro at https://metacpan.org/release/GraphQL.

Initial findings:

• it will be useful to have a possibility in module-starter to generate a GitHub-aware filebase, including meta info pointing at your GH repo, and .travis.yml and .gitignore and MANIFEST.SKIP
• a workable "modern" type system looks achievable with Moo, Type::Tiny, Function::Parameters, and Return::Type. It would probably be useful to enhance module-starter with boilerplate for these too.
• Pegex looks promising as a means of lexing and parsing GraphQL. If this is successful enough, it may even be possible to use the grammar beyond Perl, in line with Ingy's "Acmeist" philosophy.
• Tests will just be straightforward Test::More for the present time. A future possibility also advancing the above would be to use TestML for tests.
• For the GraphQL internal type system, it may or may not be possible to use Type::Tiny for that too!