Add ReScript support

[sorenhoyer]

Working example: https://github.com/sorenhoyer/react-relay-rescript-boilerplate

Todos:

• Investigate issue when using variables in a query questions: local state mgmt and rescript supports #114 (comment)
• Write tests

[zth]

Great stuff! Let me review/merge this in the coming days! 🙂

[zth]

@sorenhoyer let me know if you want to discuss adding tests etc.

[sorenhoyer]

@zth I'd like that. I Added one test for parsing of a query with a variable with ReScript syntax, but before I add more, I'd like to hear what you had in mind. :-)

[zth]

No that looks great! I think maybe extending them to making sure the can handle multiple tags in the same file, and also that what it picks up is valid GraphQL (so just parsing it via graphql-js without doing anything with the results) would be a good idea too, if you don't mind.

[sorenhoyer]

@zth added multiple tags to the test and also parsing it with the relay-compiler to verify that it is valid graphql that is picked up.

Not sure what else is necessary to test here, other than perhaps the default reason syntax, but maybe that is a little out of scope for this PR, since this is focussing on adding ReScript support.

Let me know if you have any suggestions regarding the tests. I'm not so "creative" when it comes to finding test cases heh. ;-)

[zth]

Great work! 😄 Just one comment and this is good to go 👍

[zth]

@sorenhoyer one final thing 😅 Could you add an entry to the changelog? Please tag and thank yourself for the work in there too! ;)

EDIT: And merge master? That way CI should start working for this branch as well.

[sorenhoyer]

The error "reserveCache failed: Cache already exists" in the pibeline is probably related to this actions/cache#144 (comment)

[zth]

🎉 Awesome, thank you so much for doing this!