Support for shared fragments

[robp94]

📝 Description

Support a shared fragments file to avoid duplicate file generation.

🔗 Related Issues

#1245

[dariuszkuc]

Since each GraphQL file can contain fragments (which may or may not overlap), I believe the solution should be accounting for this. Otherwise this would force clients to potentially rewrite all their queries.

Efficiently generating client code is a pretty complex topic and there are number of considerations and tradeoffs with the approaches. Martin Bonnin did a great write up on this topic in how they approach this problem in apollo-kotlin (see link).

[robp94]

While thinking about a possible approach for this, I came a round some problems, so yeah it can get really complex. That is why I came up with this more manual approach.

To find a better approach maybe we could start with listing some key requirements in the issue if possible?